Eicon Networks CX1 Installation manual

HOST LINKS
GLINE
G&R
Line Handlers
and
Configuration
http://www.gar.no/hostlinks/
TM
Microsoft, Windows, MS, MS-DOS are registered trademarks of Microsoft Corp.
IBM and PC are registered trademarks of IBM Corp.
UNIX is a registered trademark in the United States and other
countries, licensed exclusively through X/Open Company, Ltd.
Any other product names are trademarks of their respective owners.
Version 6.1
© Gallagher & Robertson as 1990-2004
All Rights Reserved
GALLAGHER & ROBERTSON AS, Kongens gate 23, N- 0153 Oslo, Norway
Tel: +47 23357800 • Fax: +47 23357801
www: http://www.gar.no/hostlinks/
e-mail: hostlink@gar.no
G&R
Contents
Installation........................................................................................... 1
Scope of the product ........................................................................... 3
Overview.............................................................................................. 5
G&R product architecture .......................................................................................... 5
Architecture diagram.................................................................................................. 6
Line handlers .............................................................................................................. 6
Handler/product relationships .................................................................................... 7
Enclosures and ‘turn’ ................................................................................................. 9
Host Links Trace............................................................................... 11
Trace activation ........................................................................................................ 11
Trace types ............................................................................................................... 11
Structure ................................................................................................................... 12
Tracing Ggate........................................................................................................... 13
Examples - G&R products ....................................................................................... 13
CPI-C and Gweb trace files...................................................................................... 15
Line handlers..................................................................................... 17
The DSA/DIWS handler .......................................................................................... 17
DSA/DIWS on Windows servers.................................................................. 18
Transport stacks ............................................................................................ 19
Accepting connections .................................................................................. 21
The listener .............................................................................................. 21
Listener parameter overview ................................................................... 22
Using the Windows listener..................................................................... 23
Using UNIX/Linux listeners.................................................................... 23
Mailbox pools for incoming connects ..................................................... 24
Starting applications on demand.............................................................. 24
Issuing connections ....................................................................................... 26
Service messages........................................................................................... 27
The connect command............................................................................. 28
Connecting to CXI applications .............................................................. 29
The disconnect command ........................................................................ 29
The break commands............................................................................... 29
The identification inquiry ........................................................................ 30
Gline Line Handlers and Configuration
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G&R
Connection errors.......................................................................................... 30
Parameters for DSA/DIWS handler .............................................................. 31
DSA and DIWS parameters in detail....................................................... 36
The TCP/IP handler.................................................................................................. 47
Making connections using TCP .................................................................... 47
Accepting a connect ................................................................................ 47
Issuing a connect ..................................................................................... 47
Service messages........................................................................................... 48
The connect command............................................................................. 48
The disconnect and break commands ...................................................... 49
Parameters for the TCP/IP handler................................................................ 49
TCP parameters in detail ......................................................................... 50
The X.25 handler...................................................................................................... 57
Making connections using X25..................................................................... 57
Accepting a connect ................................................................................ 57
Issuing a connect ..................................................................................... 57
Service messages........................................................................................... 57
The connect command............................................................................. 58
The disconnect and break commands ...................................................... 58
Parameters for the X.25 handler.................................................................... 59
The Asynchronous (TTY) handler ........................................................................... 61
Making connections using TTY.................................................................... 61
Accepting a connect ................................................................................ 61
Issuing a connect ..................................................................................... 61
Service messages........................................................................................... 62
The connect command............................................................................. 62
The disconnect and break commands ...................................................... 62
Parameters for the TTY handler.................................................................... 63
DSA Configuration ........................................................................... 65
Step-By-Step Guide.................................................................................................. 65
Configuration check list ................................................................................ 65
The mainframe system ............................................................................ 65
The Host Links system ............................................................................ 66
Configuring the mainframe ........................................................................... 66
GCOS8 configuration.............................................................................. 66
GCOS7 configuration.............................................................................. 66
Front-end configuration........................................................................... 67
GCOS6 configuration.............................................................................. 67
Another Host Links system ..................................................................... 68
Configuring the Host Links system............................................................... 69
Configuring the transport stack ............................................................... 69
Configuring Host Links........................................................................... 70
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Gline Line Handlers and Configuration
G&R
The dsa.cfg configuration file................................................................................... 74
Overview....................................................................................................... 74
Configuration file directives ......................................................................... 76
SC - Session control ................................................................................ 76
RSC - Remote Session Control ............................................................... 77
TS - Transport Station ............................................................................. 78
TP - Transport Provider........................................................................... 80
CONAME - Connection Name................................................................ 82
Gline parameters...................................................................................... 83
PARAMS - Parameters............................................................................ 83
POOL - Parameter Pool........................................................................... 84
Macro facility .......................................................................................... 85
COSTRICT - Connection Name Strictness ............................................. 85
RESTRICT - Parameter Restrictions....................................................... 86
FILTER - Access Filter ........................................................................... 86
Use of filters to restrict access................................................................. 88
Sample dsa.cfg for RFC1006 ................................................................................... 90
Brief description of the configuration ..................................................... 90
The Host Links node ‘HL01’ .................................................................. 91
The Host Links node ‘HL02’ .................................................................. 91
The DPS9000 node ‘GC8F’ .................................................................... 92
The DPS7000 node ‘GC7F’ .................................................................... 92
The MainWay.......................................................................................... 93
Sample dsa.cfg for OSI Transport ............................................................................ 94
Sample configuration .................................................................................... 94
Brief description of the configuration ..................................................... 95
The configuration files .................................................................................. 96
The Host Links node ‘GRDL’ ................................................................. 96
The Host Links node ‘GRIL’ .................................................................. 96
The Host Links node ‘GRDW’................................................................ 97
The Host Links node ‘GRIW’ ................................................................. 98
The DPS6 node ‘B6Dx’........................................................................... 98
The DPS7 node ‘B7DL’ ........................................................................ 100
The DPS9000 node ‘B8DF’ .................................................................. 100
The Datanet node ‘DN01’ ..................................................................... 101
The DPS7 node ‘B7DC’........................................................................ 102
The DPS7 node ‘B7DF’ ........................................................................ 102
A shared dsa.cfg for all the Host Links nodes............................................. 103
Gline Line Handlers and Configuration
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Appendix: Host Links Manuals..................................................... 107
Appendix: DSA test utilities........................................................... 109
Gerror.......................................................................................................... 109
Glnode......................................................................................................... 109
Gmacfix....................................................................................................... 110
Gping .......................................................................................................... 110
Grnode ........................................................................................................ 110
Gtrace.......................................................................................................... 111
Gtsupd......................................................................................................... 111
Appendix: Error Codes .................................................................. 113
OSI/DSA error codes ............................................................................................. 113
Windows Sockets error Codes ............................................................................... 125
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Gline Line Handlers and Configuration
G&R
Installation
The G&R emulations and gateways are independent programs, but part of the
G&R Host Links product set available on all major UNIX/Linux platforms.
Many of the products are also available for Windows servers. For details on
platforms supported, software delivery and installation refer to the Host Links
Installation and Configuration manual.
VTnnn, xterm, ... terminal environment
Qsim
V78sim
G3270
Host Links platforms
Gspool
GUFT
GlAPI
Gproxy
Bull/IBM
Mainframes
LAN Workgroup, PCs
and Macs with Glink
Ggate
Gweb
Gspool
GUFT
GlAPI
LDSA
Gproxy
Powerful, multi-CPU
UNIX or Windows NT
Windows NT or
UNIX on PC
VIP7800 terminal environment
Pthru
Gspool
GUFT
GlAPI
Gproxy
Gline Line Handlers and Configuration
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G&R
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Gline Line Handlers and Configuration
G&R
Scope of the product
G&R/Gline comprises a set of communications line handlers with a standard
interface used by the G&R Host Links product set. The Gline line handlers
standardize handling of any kind of communications line. This reduces
application complexity, and makes applications portable across network
environments. Applications are written using one of the communications
libraries supporting the standard communications interface, GlAPI (Gline
Application Programming Interface). The interface works with any Gline line
handler, and can be used to program applications for communication over any
network connection for which there is a Gline line handler, including:
Asynchronous
X.25
TCP/IP
DSA/OSI
DSA/RFC1006
direct or modem connected
raw or PAD
dial-up, ISDN, leased line, raw, Telnet, TNVIP TN5250
and TN3270
native Bull DSA and DSA/ISO Work Station over OSItransport
native Bull DSA session over TCP/IP transport
GlAPI is available on all the supported platforms: UNIX/Linux and Windows
servers and workstations.
The G&R Host Links product set uses the native mode Gline API for all
communications.
Third party software houses and customers also use GlAPI when developing
communications applications. GlAPI includes CPI-C for use in applications following the X/Open standard for programmatic access to communications. For
details of the various APIs please refer to the GlAPI Application Programming
Interfaces manual.
Gline Line Handlers and Configuration
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G&R
4
Gline Line Handlers and Configuration
G&R
Overview
G&R product architecture
The G&R products are built in a modular way, and designed to take advantage
of the multitasking capability of the Windows and UNIX/Linux platforms.
Thus a single instance of a product will in general consist of two or three quite
separate processes:
• A video handler: which maps all updates of the internal screen image
into the control sequences required to update the specific screen being
used. The video handlers are used by UNIX/Linux products, which must
communicate with various different terminal types. The Windows
products use the standard Windows graphical interface.
• A product: for example an emulator, which updates the internal screen
image to duplicate the terminal being emulated. The product will also in
general send and receive data to the host system using the global interface, which applies to all communications protocols.
• A line handler: which maps the global communications interface into the
specific line protocol being used.
This structure has proven itself extremely efficient and very robust. We are able
to develop a video handler for a new screen type, and we know that once it
works with one G&R product it will work with all. We are able to develop a
new line handler and know that once it works with one product it will work
with all. We are able to develop a new product using a given screen and
communications protocol, and know that the product will work with all screen
types we support, and with all the communications protocols we support.
The server programs (e.g. Ggate, Gspool, GUFT) differ slightly from the
above model, as they don’t need a video handler, only a line handler. Pthru
doesn’t need a video handler either; it needs one line handler to connect to the
host and one line handler (TTY) to pass all presentation data through to the
terminal.
Gline Line Handlers and Configuration
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G&R
Architecture diagram
Clients for terminal users (V78sim, Qsim, G3270, G5250 Pthru) on UNIX
and Linux only.
Protocol dependent Communication Facilities
Line
Handler
DIWS
Product
GWEB
Video
Handler
CGI
WEB
SRV
DSA
V78sim
Glink
VIP
Qsim
X.25
TCP
G3270
G5250
GUFT
VTxx DKU7102 TERMINFO
TTY driver
Pthru
TTY
Gspool
Ggate
TTY
Print
TCP
socket
Line handlers
A Host Links product will generally start up the line handler automatically,
and will in general itself accept parameters for tailoring the line handler, and
pass these to the handler after contact is established.
We currently have the following line handlers: gl_dsa, gl_tcp, gl_x25
and gl_tty, handling DSA/DIWS, TCP/IP, X.25 and Asynchronous
communication respectively (gl_x25 and gl_tty are currently only
available for UNIX/Linux). Most of the Host Links products use one line
handler at a time, but Pthru is an exception as it uses two line handlers, normally gl_dsa on the mainframe side and gl_tty on the terminal side.
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Gline Line Handlers and Configuration
G&R
Handler/product relationships
Any product using the Gline API to communicate with the line handler can
be run using any line handler. This is one of the strengths of the architecture.
There are restrictions enforced by the external environment. For example the
Questar DKU emulation Qsim can normally only be used over a link that the
Bull primary network regards as synchronous. In practice this means it can only
be run over a DSA/DIWS or TNVIP link.
The following is a list of the all the Host Links products and the line
handlers they normally use on the host side:
Qsim
V78sim
G3270
G5250
Pthru
Ggate
Gspool
GUFT
GlAPI
gl_dsa,
gl_dsa,
gl_dsa,
gl_tcp
gl_dsa,
gl_dsa
gl_dsa,
gl_dsa
gl_dsa,
gl_tcp
gl_tcp, gl_tty
gl_tcp, gl_x25
gl_tcp, gl_tty
gl_tcp
gl_tcp, gl_x25, gl_tty
DSA connections can be made in the traditional way using OSI-transport,
which is a requirement when connecting via old-style Datanets. The Bull
systems can be accessed over an X.25 WAN or Ethernet LAN through a
Datanet or MainWay front-end. Alternatively access can be direct to GCOS6
using a LAN adapter or direct to GCOS7 using ISL. Access can be by an FDDI
LAN direct to GCOS7 using FCP7 or direct to GCOS8 using FCP8 (both
support OSI-transport).
DSA connections can also be made over a TCP/IP network, using the Internet
standard RFC1006 transport protocol to replace OSI-transport. MainWay frontends with an ONP (Open Network Processor) have RFC1006 support in the
standard product, allowing DSA sessions over TCP/IP into the MainWay.
RFC1006 can also be installed in the FCP7 and FCP8 cards to support DSA
connections direct to the mainframes without passing through the front-end.
The GNSP of newer GCOS8 systems, and the Open System personality of
GCOS7 Diane systems both support RFC1006 connections.
Gline Line Handlers and Configuration
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G&R
The G&R/Ggate product off-loads the DSA session protocol into gateways.
By running Ggate on the system(s) with the mainframe connections the
emulator platforms need only the very small and efficient Ggate protocol layer
to connect over TCP/IP to a Ggate gateway with full native Bull network
functionality. Ggate can make the mainframe connection using OSI-transport or
RFC1006. If you must use OSI-transport for the mainframe connection, using
Ggate will limit the need for OSI-stacks to the Ggate platforms.
The Host Links Installation and Configuration manuals cover the OSI stack
installation and setup for the supported UNIX and Windows server systems.
Bull systems can also be accessed using Telnet VIP (TNVIP). The TNVIP
servers in the MainWay, the Bull DPX/20, GCOS8 GNSP, the Open Systems
personalities of GCOS7 Diane systems and G&R/Ggate are all qualified.
However, RFC1006 will increase throughput as compared to using TNVIP. It
will also give a real, fully functional DSA or DIWS session over the TCP/IP
network, as compared to the limited terminal session offered by TNVIP.
IBM systems can be accessed using DSA into the Bull front-end and the
OSF/SNA gateway (supported in the Datanet and MainWay). IBM systems can
also be accessed using Telnet 3270 (TN3270 or TN3270E) to connect to any
TN3270ÙSNA gateway or front-end. The MainWay gateway, the TN3270
server on the Bull DPX/20 UNIX systems, the IBM TN3270 front-end and the
TN3270 server for Windows are all qualified. Additionally, IBM AS400
systems, or other host systems that supports the 5250 family of terminals, can
be accessed using Telnet 5250 (TN5250) connecting through a Telnet 5250
server.
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Gline Line Handlers and Configuration
G&R
Enclosures and ‘turn’
The interface between a Host Links product and the line handler is global
throughout the G&R product range, and for all user applications using one of
the GlAPI programmatic interfaces for communication.
The functions for receiving and sending data include an indication of the
‘enclosure’ level for the data received, or to be sent. Enclosures are very important in the more advanced line handlers, particularly the Bull DSA handler.
Enclosures are supported for all line handlers to make the API global and to
make applications using the API independent of the type of communications
line. If the enclosure level signaling is unreliable the product using the line
handler will need special parameters to help it 'guess' when mainframe output is
finished and it is able to process the data received.
The following enclosures are defined:
none
the enclosure is used for convenience of delivery to or from a lower layer of
protocol and has no significance for the product using the interface.
end of segment
This is a complete session protocol unit, but is treated as ‘none’ above.
end of message
Defines a complete logical block of data transmitted or received, but
indicates that more logical blocks will follow. This is the Bull DSA 'End of
Quarantine Unit'.
end of group
Used by interactive products to indicate that the sender will now wait for
input before continuing. This is known as the ‘turn’ concept.
Using Bull DSA terminology; when transmitting or receiving data, an
application record, called a ‘message’, can be split (partitioned) into several
DSA session protocol units called ‘letters’. The letter can be segmented due to
size constraints at the session level (the maximum letter size). The session
protocol units might have to be split again into several transport protocol units
called ‘fragments’ for transmission due to size constraints at the transport level.
Finally the transport units might be split again into ‘packets’ because of constraints at the network level.
Gline Line Handlers and Configuration
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G&R
Whereas a simple handler might have no session protocol unit size restriction it
might have a transport size restriction, or a network packet size restriction (e.g.
TCP/IP packet size) that would cause fragmentation of the application record
for transmission purposes. Depending on the interface between the handler and
the lower level protocol this might cause the receiver to see a series of data
blocks with enclosure ‘none’.
In two-way-alternate sessions ‘end of group’ is used to signal that a reply is
now required (turn). The DSA record header indicates enclosure and turn, and
in the DSA/ISO Work station protocol (DIWS) this is mapped to the OSI data
token that allows the holder to transmit. There is really no turn concept in a
two-way-simultaneous dialog, and no data token in two-way-simultaneous OSI
sessions. However, the DSA records of the DSA/DIWS handler can still use
‘end of group’ enclosures and indicate turn to the Bull mainframe applications,
which although they might support two-way-simultaneous dialog, can still
require a DSA ‘end of group’ before they will handle an incoming message.
Note that most Host Links products and host applications are not in fact
two-way-simultaneous in the sense that they send and receive simultaneously at
the application level. Two-way-simultaneous means in practice that the
application or communications product can break the ‘send, receive, send,
receive’ pattern of interactive dialog. Thus an emulator or concentrator
connected to a DMIV TP application using DACQ configured for two-way
simultaneous dialog will be able to send a second transaction before it receives
an answer to the first. In general this allows applications to not answer certain
transaction types (data entry) for efficiency.
Host Links products by default always offer to establish either two-way
simultaneous or two-way alternate sessions, and it is the mainframe application
that chooses the mode.
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Gline Line Handlers and Configuration
G&R
Host Links Trace
If you experience any kind of problem when using a Host Links application, the
application trace file and/or the line handler trace file will provide useful
documentation of the problem.
Trace activation
The Host Links products automatically create sub-directories in the debug
directory when debug is activated: at product level using the -dbg parameter,
or at line level using the -d_ or -s_ parameters to the line module.
Windows
server
gspool -id gs1 –dbg –ps \\SERVER\LEXMARK
-li dsa -da tptst -d_ on
UNIX
Linux
gspool -id gs1 -dbg-pc lp -li dsa
-da tptst -d_ on
Most G&R products include a facility for setting product or line parameters
dynamically. It is therefore generally possible to turn on debug or trace without
modifying the command line or configuration of a production system.
Trace types
All Host Links products accept a parameter –dbg, which starts an application
level trace of internal events. This is useful when investigating malfunctions or
looking closely at product behaviour.
All Gline line handlers accept a parameter -d_ to turn on a data trace. It
records data and enclosure level being exchanged with the line handler. It is
useful when documenting product malfunction e.g. an emulation error, because
it records exactly what the host sends and what the G&R application replies. It
can be used to simulate a customer situation, reproduce a problem and to verify
that a correction fixes the documented problem.
Gline Line Handlers and Configuration
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G&R
All Gline line handlers accept a parameter -s_ to turn on a session trace. It
records the raw data being exchanged between the line module and the underlying transport layer (e.g. OSI Transport, or TCP socket), as well as internal
events and protocol states. It is useful when investigating protocol failures such
as unsuccessful connect attempts or abnormal disconnections.
Structure
The Host Links file structure includes a debug directory to collect the trace and
debug files in one location where the permissions can be adjusted as required
for security. By default only the Host Links administrator can access the
directory. The debug directory is created by the initialization procedure and
located (by default) in:
Windows
server
\gar\debug
UNIX
Linux
/usr/gar/debug
If the application is a client type of application, a debug sub-directory with the
same name as the user (UNIX username or PC login name) is created and all
debug files are located there. This includes the line level trace except in the
special case where the client application connects via Ggate and the line level
trace is written on the Ggate system using the Ggate DSA node name as a
debug sub-directory.
If the application is a server type of application, then a sub-directory will be
created using the DSA node name on behalf of which the server application is
executing. If the server does not use DSA the default local session control name
is still used if there is a dsa.cfg file. If there is no dsa.cfg file then the
system’s UNIX or Windows communications node name is used. You can find
this name using the command uname –n on UNIX systems, or the Network
section of the control panel on Windows systems. This covers situations where
several instances of a server are executing on the same system and accepting
incoming calls to different DSA node names, or where several Host Links
systems using the same server product share a file system.
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Gline Line Handlers and Configuration
G&R
Tracing Ggate
When Glink, a Host Links client or a customer application based on GlAPI
connects through Ggate to the application, the line handler trace is generated on
the Ggate system, with the name and location shown in the table:
Windows
server
UNIX
Linux
\gar\debug\NODE\ggaNN-PPPP.dbg
/usr/gar/debug/NODE/ggaNN-PPPP.dbg
NODE is the local DSA node name used by the Ggate system.
The trace file name consists of the prefix ggaNN- followed by the IP-address
of the client, suffixed by .dbg for a terminal session or –dbp for a printer
session. The following is a trace file name for Ggate session sequence number 5
executing on Host Links system GRDL initiated from a Glink client on IPaddress jim.gar.no:
gga05-jim.gar.no.dbg
This file, and possibly also a Glink debug file and a Glink communication trace
file activated by the /J command line parameter will be needed by the support
engineer investigating any problem.
To enable a line handler trace through Ggate the product’s start-up command or
configuration file would look like this:
-LI YYY:ZZZZ -S_ -D_
(YYY =line handler identification, i.e. DSA or DIWS)
(ZZZZ =IP-address of the system running Ggate)
Examples - G&R products
Examples of directory and file names in the debug structure are:
/usr/gar/debug/jim
Debug directory for user ‘jim’
qsm.dbg
Qsim emulator debug file
Gline Line Handlers and Configuration
-dbg
13
G&R
14
qsm-gli.dbg
Qsim host line trace
-li dsa -s_
pth-glit.dbg
Pthru terminal line trace
-term -s_
pth-glih.dbg
Pthru -host line trace
-li dsa -s_
g32.dbg
G3270 emulator debug file
-dbg
g32-gli.dbg
G3270 host line trace
-s_
/usr/gar/debug/mike
Debug directory for user ‘mike’
v78.dbg
V78sim emulator debug file
-dbg
v78-gli.dbg
V78sim host line trace
-li dsa -s_
guf.dbg
GUFT client debug file
-dbg
guf-gli.dbg
GUFT client host line trace
-li dsa -s_
/usr/gar/debug/en01
Debug directory for node ‘en01’
guf.def
GUFT server debug file
-dbg
guf-gli.def
GUFT server host line trace
-li dsa -s_
gli-gli.dsa
DSA listener host line trace
-s_
gli-gli.diw
DIWS listener host line trace
-s_
gsp.def
Gspool (default -id) debug
file
-dbg
gsp-gli.def
Gspool (default -id) host
trace
-li dsa -s_
gga01-mike.gar.no.dbg
Ggate line trace, first Glink
-s_
gga02-mike.gar.no.dbg
Ggate line trace second
Glink
-s_
/usr/gar/debug/en02
Debug directory for node ‘en02’
gsp.abc
Gspool (-id abc) debug
file
-dbg
gsp-gli.abc
Gspool (-id abc) host
trace
-li dsa -s_
gspc-gli.def
Gspool DPF8 command
trace
-li tcp -s_
Gline Line Handlers and Configuration
G&R
gspd-gli.def
Gspool DPS8 data trace
-li tcp -s_
gsp._00
Gspool started on demand
debug
-dbg
gsp-gli._00
Gspool started on demand
trace
-li dsa -s_
CPI-C and Gweb trace files
Gweb uses the CPI-C libraries so the Gweb debug structure is exactly the same
as for CPI-C, except that Gweb inserts its own product identifier into the file
name structure. CPI-C applications use the ‘client’ style of debug and create a
debug directory with the UNIX username or PC login name used by the process
that started them.
The application level debug (-dbg) and line trace (-s_ and -d_) are set in the
cpic.cfg file. The line trace goes to the debug directory, with the name built
up as follows:
<product_id><session_id>-<process_id>.<debug_type>
product_id
Value
Comment
cpi
CPI-C API
cp3
CPI-C 3270
cp7
CPI-C 7800
cpd
CPI-C DKU
gw3
Gweb3270
gw7
Gweb7800
gwd
Gwebdku
session_id
(nn)
If multi-session application, 1-63
process_id
n (n n n...)
Varies by platform
debug_type
dgb
Application level debug
gli
Line trace
Gline Line Handlers and Configuration
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G&R
Example:
\gar\debug\system
16
debug directory for user "system"
cpi-16.dbg
CPI-C single session debug
-dbg
cpi-16.gli
CPI-C single session line trace
-li dsa -s_
cpi2-123.dbg
CPI-C session 2 application
debug
-dbg
gw7-20172.gli
Gweb7800 host line trace
-li dsa -s_
Gline Line Handlers and Configuration
G&R
Line handlers
The DSA/DIWS handler
You start this handler when you specify -li dsa or -li diws as the line
handler for a Host Links product. If you connect via Ggate it creates a
new line handler process or thread for you, and the new process/thread runs
gl_dsa on your behalf.
The handler is used to connect to Bull front-ends or Bull systems directly:
• Directly to Datanet, MicroFEP or MainWay
• Through Datanet, MicroFEP or MainWay to any mainframe
• Directly to GCOS7 systems with ISL
• Directly to GCOS7 systems with FCP7
• Directly to the Open Systems personality of GCOS7 Diane systems
• Directly to GCOS8 systems with FCP8
• Directly to GCOS8 systems with GNSP
• Directly to GCOS6 (WAN or LAN)
The DSA/DIWS line handlers can (like all others) be used in communication
between two Host Links applications; for example for test purposes or when
running G&R/GUFT file transmission between 2 systems.
The DSA line handler in DSA protocol mode is the preferred way to connect to
Bull systems. It implements DSA presentation over DSA session, interfacing to
the transport stack. The main benefits of the DSA protocol compared to DIWS
are:
•
Access to front-ends/hosts that don’t have a PID (Plug ISO-DSA). This includes many older releases of DNS as well as GCOS6 and GCOS7
software that is still in use at many sites
Gline Line Handlers and Configuration
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G&R
•
Increased speed since the unneeded level of protocol translation is bypassed
•
Simpler DNS and/or mainframe configuration, as it’s likely that DSA
session is already configured whereas DIWS is not
•
The DIWS protocol mode can still be used if you have historic reasons to
do so. It implements DSA presentation over OSI session, interfacing to the
OSI transport stack according to the Bull DSA/ISO workstation
specification. There are no known technical reasons to use DIWS in new
installations
DSA/DIWS on Windows servers
Due to limitations in the multitasking capabilities of Windows servers the
DSA/DIWS line handler has been implemented slightly differently than the
UNIX/Linux counterpart. On UNIX/Linux, when you specify -li dsa or
-li diws for a Host Links application, a new line handler process
gl_dsa is launched. Windows servers cannot multitask multiple processes
efficiently, and so need to handle multitasking by using threads within a single
process. The Windows server version of Host Links uses a line module
server, to deal with this. The line module server is a program with the same
name as the listener products on UNIX/Linux, i.e. nl_dsa. When you specify
-li dsa or -li diws for a Host Links product running on a Windows
server, it contacts the appropriate line module server. The line module server
creates a new thread to handle the session.
As a result of this, the nl_dsa line module server must be started before any
Host Links product that uses the DSA/DIWS line handler. Like all the other
Host Links servers on Windows, the line module server must be launched
as a Windows service. Do this by adding the command line to the beginning of
the Gservice configuration file:
nl_dsa.exe
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Gline Line Handlers and Configuration
G&R
Transport stacks
The DSA/DIWS handler interfaces to a transport stack. The transport stack
traditionally used by Bull front-ends and mainframes was the OSI-transport
stack, and the Host Links products needed a corresponding OSI-transport stack
in order to connect. This is no longer the case. Bull supports the Internet
standard RFC1006 protocol layer, allowing native DSA sessions to be
established over TCP/IP networks.
The DSA line module includes both the OSI interface and the TCP/IP based
RFC1006 interface. On some UNIX systems OSI interface files are requested at
load time and if no OSI stack is installed, the loading of the line module may
fail. For this reason we deliver a DSA line module that includes only the
RFC1006 interface and this module is optionally installed during the Host
Links installation process:
Your choices are:
1. DSA over OSI and RFC1006 (requires OSI stack)
2. DSA over RFC1006 only
Your choice is [2]?
Please choose 2 if you will be using only RFC1006.
RFC1006
For customers with a MainWay front-end and Open Network Processor, a
GCOS8 GNSP processor or a GCOS7 Diane system, RFC1006 support is
standard. RFC1006 support can also be installed in the FCP7 or FCP8 FDDI
adapters. For customers with RFC1006, the G&R products can make genuine,
fully functional DSA connections over a TCP/IP network. This removes the
requirement of purchasing and installing OSI transport software on the Host
Links platform. We supply the RFC1006 protocol stack as a part of the standard
delivery of Host Links. If RFC1006 is available on the mainframe system or
MainWay front-end, then no communications software other than the standard
TCP/IP stack is needed on the Host Links platform. See the -who gar
parameter to the tp (transport provider) directive in the dsa.cfg file
described on page 80.
If you intend to accept incoming connections over RFC1006, you must start the
nl_dsa listener, and it must be started from root because only root can
reserve the RFC1006 reserved port 102.
Gline Line Handlers and Configuration
19
G&R
OSI-transport
The Host Links product set does not include an OSI-transport stack as a part of
the standard delivery. If one is needed it must be ordered. We do not offer an
OSI-transport stack for Linux; RFC1006 is the only choice. For most UNIX
platforms an OSI-transport stack is available from the UNIX supplier. The great
majority of the OSI stacks for UNIX systems come with a programmatic
interface to the OSI-transport layer following the TLI, XTI or ISODE API
standards, all of which we support. For Windows servers we supply the Marben
OSIAM stack as an extra option. For OSI connections over Ethernet nothing
further is needed, the Marben stack supports all third party Ethernet cards with
the Windows NDIS interface. For OSI connections over a WAN an X.25 card
is needed. For Marben you will need an EICON X.25 board. See the Host
Links installation and Configuration manuals for UNIX/Linux and Windows
servers for details on installation and configuration of OSI stacks for various
supported platforms.
20
Gline Line Handlers and Configuration
G&R
Accepting connections
Products and applications receiving connections must configure a local node
name using the -ln option, causing the line handler to accept incoming calls.
The local mailbox name should then also be specified using the -mn option.
Because a line handler can deal with only one incoming connection, a system
accepting multiple simultaneous connections to a single node name must use a
listener, described below. The -ln option then registers the application with
the listener for the given node name as listening on the given mailbox. It is then
the listener for the given node name which accepts connections and forwards
them to the applications which have registered that they are listening to
mailboxes on that node name.
The listener
The nl_dsa program listens for incoming connections on a given SC (Session
Control name, also referred to as DSA node name), and dispatches incoming
connections to waiting programs. This allows you to have many programs
listening for incoming connections on the same SC, but for different mailboxes.
We recommend you always use the DSA protocol (default) to avoid
unnecessary overhead and many known errors in the DIWS handlers on the
mainframes and front-ends, but you can use the DIWS protocol if you must.
Please note that a listener can listen for either DSA or DIWS connections, but
not both protocols at the same time. If you need to accept both DSA and DIWS
connections, then you need to start up 2 instances of the nl_dsa program: one
with the -prot DIWS parameter, and one with default (–prot DSA). Also
note that if RFC1006 protocol is used, 2 listeners cannot use the same RFC1006
port number; you must start one of the listeners using a non-standard port
number (i.e. different from 102) using the –lp parameter.
Gline Line Handlers and Configuration
21
G&R
Listener parameter overview
22
Option
value
Explanation
-prot
DSA
DIWS
Session protocol to be used. Default DSA
-dbg
Enable data and event tracing. Write information to
the debug file gli-gli.XXX in the default debug
directory
-e_
Windows server version only: enable Windows
Event Log Tracing
-icolim
n
50
200
Number of simultaneous incoming sessions
accepted by the Windows listener before it begins
to reject them in order to avoid unpredictable errors
due to Windows service resource limitations. The
default is 50.
You can increase the default to 200 by running the
Host Links Windows services in the foreground.
Use the ‘foreground’ parameter to Gservice (see the
Gservice documentation in the Host Links for
Windows installation manual).
-icorej
xxxx
When the Windows listener begins to reject
incoming sessions because it has reached the limit
-icolim it will by default use DSA reason code
0106 (mailbox saturated). You can change it to e.g.
0105 (mailbox inoperable).
-ln
SCID
Set if multiple SC records are defined and you want
to listen for incoming sessions on other than the
default SC. Also set if you want to run several
listeners
-lp
Port
number
Local port number (applicable to RFC1006).
Default 102
-rej
Reason
code
Overrides the DSA reason code used when
rejecting an incoming session connect from the
mainframe. Defaults to 0104 for unknown mailbox
and 0106 for busy mailbox
Gline Line Handlers and Configuration
G&R
Using the Windows listener
For Windows servers the nl_dsa line module server (listener) must be started
before any Host Links product can use the DSA/DIWS line handler, see the
section describing use of the DSA/DIWS handler on Windows servers on page
18. The same line module server also carries out the listen function, and so any
product using the -ln option registers the mailbox for which it will accept
connections with the line module server (listener) that is handling connections
for the node name specified in the -ln parameter.
Using UNIX/Linux listeners
If you need more than one listening application on a UNIX/Linux system,
either using the -ln option directly or implicitly through the -co or -pco
options explained below, then the listener process, nl_dsa, has to be started.
It can be started manually, but typically you should set it up such that the
command is run each time the UNIX/Linux platform boots. This process has to
be started before any other Host Links product that receives incoming
connections. If the DSA listener is accepting incoming RFC1006 connections,
it must run as root, because access to the RFC1006 port is restricted to root.
On systems running AIX or HP-UX, you can do that by starting it directly from
/etc/inittab, by placing a line like this at the end of the file:
nl_dsa:2:once:/usr/gar/bin/nl_dsa
On other UNIX or Linux systems and you can create a shell script, e.g. S99nl,
with the content below, and place it in the /etc/rc2.d directory:
/usr/gar/bin/nl_dsa
The nl_dsa program accepts a node name parameter, -ln nodename. This
option needs only be specified if you have defined multiple SC records in your
dsa.cfg, and want to listen for incoming connects on other than the default
SC. This would be the case if you were accepting incoming calls to multiple
node names and needed multiple listeners.
The listeners also accept the line session trace parameter -s_, which causes
them to produce a line trace in the debug directory where they record the
connections established through the listener.
Gline Line Handlers and Configuration
23
G&R
Mailbox pools for incoming connects
Contrast this functionality with ‘Starting applications on demand’ described
below.
You can start multiple instances of products accepting connects to the same
mailbox name on the same DSA node (SCID). Each instance should use a
different mailbox extension. The instances of the product will be allowed to
start execution, register the mailbox name and extensions for which they are
accepting connects, and act as a mailbox pool for applications connecting to the
mailbox name.
An incoming connect to a mailbox without an extension will be passed to a
random instance of the product which is accepting connects to a mailbox with
the correct name and that isn’t currently busy handling a session. An incoming
connect with a mailbox and extension will only be connected to a product
which is accepting connects that match both.
Example:
gspool -id gs1 -pc “lp -dprt1” -li dsa -ln -mn printer1 -mx p1
gspool -id gs2 -pc “lp -dprt2” -li dsa -ln -mn printer1 -mx p2
gspool -id gs3 -pc “lp -dprt3” -li dsa -ln -mn printer1 -mx p3
The three instances would start, all listening on mailbox printer1. Connects
to mailbox printer1 would be accepted by any of the Gspool instances that
was not already busy. Because the instance that is selected is random the three
instances should deliver print to a printer or printer queue with the same print
characteristics. If a certain application needs a specific one of the printers or
print queues that is otherwise used in the pool, then that application can use the
correct mailbox extension. Print output needing another type of printer
altogether would have to connect to another mailbox name, serviced by one or
more Gspool instances with a different printer or printer queue.
Starting applications on demand
You can start applications on demand when DSA or DIWS connections arrive.
All the G&R server-type applications that accept incoming connections (e.g.
Gspool, GUFT and Gmailer) can be started in this way, as well as user-written
applications using GlAPI.
Start on demand is especially useful for sites that need to emulate many
printers. Pre-starting one Gspool process per printer is an administrative
problem for sites that have hundreds of them.
24
Gline Line Handlers and Configuration
G&R
You can also accept multiple simultaneous incoming connects to GUFT servers
with the same Host Links node name and mailbox name.
The nl_dsa listener handles the implementation; so this must be started. A
configuration file controls the mapping from the DSA mailbox name (-mn)
and, optionally, extension (-mx) to the command line for the application to be
started. There is one file for each DSA node name (SCID) for which
connections are being accepted. It is placed in the directory:
/usr/gar/servers/<scid>.gli
The file is either config.dsa or config.diw for DSA protocol and DIWS
protocol respectively.
Example file /usr/gar/servers/grdl.gli/config.dsa:
* Three printer mailboxes
listen -mn printer1 -cmd gspool -pc
listen -mn printer2 -cmd gspool -pc
listen -mn printer3 -cmd gspool -pc
* UFT server
listen -mn filetran -cmd guftsrv
* User written application
listen -mn userapp -lim 1 -ext -cmd
“lp -dprt1”
“lp -dprt2”
“lp -dprt3”
userapp arg1 arg2
Explanation:
All blank lines and lines starting with # or * are ignored. The only directive
currently handled is listen. It takes the following options:
-mn
Local mailbox name
-mx
Local mailbox extension
-lim
Used only if you want to enforce an upper limit on the number of
simultaneous connections to this mailbox
-ext
Used to indicate that this is an external command, i.e. not a G&R
product, but a user application written using GlAPI
-cmd
The command to be executed. It must be the last option on the line
Gline Line Handlers and Configuration
25
G&R
The file above allows an unlimited number of simultaneous connections to
mailboxes printer1, printer2 and printer3. For each connection to
one of the mailboxes a new instance of the corresponding Gspool is started,
regardless of how many were already executing. Connections to mailbox
filtran each start a new instance of GUFTSRV. Only one instance of
userapp is allowed to start, new connections to userapp are refused until
the first instance terminates.
If an application connects using both mailbox name and extension then there
must be an entry that matches both. The entry will be used to start the
application unless the limit (-lim) is reached. Two entries with the same
mailbox name must have different extensions.
If an application connects using only the mailbox name then the first entry in
the file with a mailbox name that matches will be used to start the application
until the limit (-lim) is reached. If the limit is reached then the next entry with
a matching mailbox name is used.
User written applications using this feature should be written like any other
application using GlAPI, but be aware that:
•
The session connection is passed on the standard input file descriptor,
so this descriptor must not be changed.
•
Additional information is passed using environment variables, so these
must not be cleared.
•
The application should terminate as soon as the session terminates. It
should not itself go on to listen for further incoming connections. In
other words, it should handle one session and then die. A new instance
of the application will be started to handle the next incoming connect.
Issuing connections
When the handler issues a connect it asks by default for either a two-way
simultaneous or alternate session, leaving it up to the acceptor to decide. TSS
on GCOS8 would always choose alternate, but the DACQ gateway to DMIV
TP or the CXI interface to TP8 can choose either, depending on Datanet and TP
configuration. Two Host Links products communicating with each other
would by default choose a two-way-simultaneous session.
26
Gline Line Handlers and Configuration
G&R
Two-way-simultaneous sessions do not have a ‘turn’ concept, but the DSA
session records indicate the enclosure level specified by the sender. Thus data
blocks may be delivered with enclosure ‘end of group’ indicating ‘turn’.
GCOS8 DACQ applications using interactive dialog will generally indicate
‘turn’ at the end of their output even if they are configured as two-way
simultaneous. GCOS6 command mode does not indicate 'turn'. Forcing two
way alternate (-CM TWAA) is sometimes the only way to make some
applications function correctly, and the Host Links products which have
problems with ‘turn’ will do this by default.
The handler by default asks for an ASCII session when connecting to GCOS6
and GCOS8, and an EBCDIC session for GCOS7 and IBM hosts. When an
ASCII product like Qsim uses an EBCDIC session to GCOS7 the code set is
transliterated in the line handler. The transliteration can be modified to map
ÆØÅ æøå ‘correctly’ for Scandinavian users (-SX). When G3270, G5250,
the 3270 CPI-C API or the 5250 CPI-C API use an EBCDIC session
they do their own transliteration.
Service messages
The line handler accepts service messages for connect $*$CN, disconnect
$*$DIS, break $*$BRK (attention, and possibly purge undelivered data,
depending on configuration of the mainframe, and/or application), the two
attention signals $*$A1 (attention type 1), $*$A2 (attention type 2) and
identification query $*$ID from the communications product using the
handler. You can type them and transmit when using an emulator or
concentrator. Unknown service messages (messages beginning with $*$ but
where the 2-3 following characters are not recognized) will cause an error
message.
Interpretation of service messages within the message text can be disabled
(-DSD OFF as an emulation parameter) so that they are transmitted as data to
the mainframe. The emulators all have command keys for issuing service
messages that may be used instead of typing $*$ if interpretation is disabled.
User applications using one of our communications APIs from the GlAPI
library must send service messages themselves when the Gline API is used,
but they will be sent automatically by CMALLC, CMDEAL and CMSERR
when one of our CPI-C APIs is used.
Gline Line Handlers and Configuration
27
G&R
The connect command
3 different $*$CN formats can be used:
Using a predefined CONAME from dsa.cfg to connect:
$*$CN coname
If the name given is not a predefined CONAME, it is assumed to be the
application name and the connect will be carried out using the parameters set
for the DSA session (i.e. explicitly by parameter setting from command line
and/or the configuration file)
Using the traditional G&R positional $*$CN format:
GCOS8 connect to 'appl' (application)
$*$CN appl,node[,str,password,person,project,billing]
GCOS7 connect to 'appl' (application)
$*$CN userid,project,billing,appl,password,node[,,str]
Using the Terminal-Manager keyword connect format:
$*$CN -scid NODE -dmb APPL –ext . . .
The following key words can be used:
-dmb, -ext, -scid, -lmb, -str, -usr, -ba, -pj, -pw, -mdmp
A GCOS8 connect normally requires only application and node, but you may
need to specify a GRTS ID or LID depending on Datanet configuration. This is
supplied as -str. You will need password, person, project if the
target site has the ‘Secure Workstation Environment’, or is using the
IDCHECK package developed by Bull Norway for securing networks.
A GCOS7 connect normally requires you to set all of the documented parameters. The string (-str) !NEW may be used, and will force GCOS7 to start
the dialog by presenting the top-level menu. Normally it reconnects at the level
where you disconnected in the previous host session. Only a normal controlled
disconnect (BYE) will get the top-level menu on reconnection.
Note that you can set the default values for the connect commands with parameters in the configuration file, but that if no default is configured then the last
value used for this particular field becomes the default. So if you make an error
in one of the parameters you need not specify the others in your next connect.
28
Gline Line Handlers and Configuration
G&R
If you set all connect parameters in the configuration file you can connect from
most of the Host Links products using a single key connect command, or by
transmitting $*$CN.
Connecting to CXI applications
You must use -HM CXI if you log in to GCOS8 via CXI. When you log in the
endpoint (at least for TP8) is:
node/mailbox/mailbox extension
When you define a LID in TP8 one of the parameters is mailbox extension,
usually set to be equal to the LID. In the connect ($*$CN) the first parameter
(mailbox name) can be specified as follows:
$*$CN XXXXXX YYYY,node
XXXXX
YYYY
the TP8 mailbox
the extension for your LID
When the remote mailbox string contains 8 characters you must follow the
mailbox string with the mailbox extension string without a space separator.
Alternatively the remote mailbox is configurable as default application (-DA)
and in the same way the extension is configurable as default extension (-DX).
The disconnect command
All systems accept:
$*$DIS
force disconnection (normally done by application).
The break commands
$*$BRK
sends attention type 1, against turn if necessary. The host, and/or application
session may be configured to purge undelivered data when a break is sent.
Gline Line Handlers and Configuration
29
G&R
The default configuration for break is:
GCOS8
GCOS7
DNS
Attention and purge
Attention only
Attention only
For DSA300 applications (CXI applications such as TP8) an option 'data
attention' may be negotiated. For these applications a data attention is used
instead of attention when transmitting a break.
$*$A1
sends attention type 1 as for break, but never purges undelivered data.
$*$A2
sends attention type 2, no purge.
The identification inquiry
$*$ID
returns the local DSA session control name, the local mailbox name and the
terminal type used e.g.
$$DIWS: Your ID is: SC:EN3D MB:D24701
TM:DKU7107
Connection errors
When a connection request from any of the Host Links applications fails to
reach the host application, the handler will return an error message that will
help you find the problem. The following sections list the three different classes
of errors you may experience, and suggest where you should continue your
investigations.
t_open error
XTI/TLI t_open errors typically mean that the OSI and/or XTI are not installed
at all, or are installed incorrectly.
30
Gline Line Handlers and Configuration
G&R
Transport disconnect
‘Transport disconnect received’ errors after a connection attempt typically
mean that you have a physical problem with the link or a network configuration
problem. Look up the error code displayed in the XTI/OSI documentation. If
you are using the Bull OSI-stack on an AIX platform use the pmaderror
command to get the error code explained. Check with trace tools on the UNIX
side if any packets leave the UNIX system. The problem may possibly be on
the other side if transport does not manage to establish connection with the
session layer there. In this case some of the OSI stacks will deliver the X25 or
DSA reason code, in which case see the section entitled Error codes.
Session refused
Session refused or session aborted errors after a connection attempt typically
mean that you have Front-end or mainframe configuration errors, or a mismatch
between the Host Links and Front-end or mainframe configuration.
Look up the error code displayed in the OSI/DSA network system messages
and return codes manual, see the section entitled Error codes or use the
Gerror utility, see section entitled DSA test utilities on page 109.
Parameters for DSA/DIWS handler
The following parameters apply to this handler (defaults in uppercase):
Parameter
Description
-LI DIWS
Start gl_dsa in DIWS protocol mode
-LI DSA
Start gl_dsa in DSA protocol mode
-LI DIWS:GATEWAY
Start gl_dsa in DIWS mode through Ggate running
on GATEWAY
-LI DSA:GATEWAY
Start gl_dsa in DSA mode through Ggate running
on GATEWAY
-AM SNM
Application mode GCOS6 SNM
GEN
Application mode general
AST
Application mode Datanet AST
Gline Line Handlers and Configuration
31
G&R
Parameter
Description
-AW on/OFF
Delay initial turn from host (in the session accept)
until real data is received on the session.
-BRK AT/ATPGLT
Can be used to override the defaults for purge
handling on break. AT gives no purge, ATPGLT
gives purge. See section entitled DSA/DIWS service
messages.
-CM xxxx
Connection mode to be used when connection is
initiated. Defaults to offer all modes.
TWSI
Two Way Simultaneous, Initiators turn
TWSA
Two Way Simultaneous, Acceptors turn
TWAI
Two Way Alternate, Initiators turn
TWAA
Two Way Alternate, Acceptors turn
-CO xxxxxx
Connection name. CONAME in dsa.cfg
-CP DSA300
Connection protocol DSA300
DSA200
Connection protocol DSA200
-CS ASCII/EBCDIC
Explicit setting of code set (ASCII or EBCDIC)
-CW nn/30
Connect wait time in seconds before failing
-D_ on/OFF
Trace data exchange with transport layer
-D? xxxxxx
-PW
-PSSW
Default password
-DA xxxxxxxx
-DMB
Default application mailbox for connect
-DB xxxxxx
-BA
-BILL
Default billing
-DN xxxxxx
-SCID
Default node to which you will connect
-DP xxxxxx
-PJ
-PROJ
Default project
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Gline Line Handlers and Configuration
G&R
Parameter
Description
-DU xxxxxx
-USR
-USERID
Default userid
-DX xxxx
-EXT
Default application mailbox extension
4 characters.
-DEE
Delayed End to end ACK
-EE on/OFF
End to end ACK
-FA on/OFF
Do not allow change of application
-FM on/OFF
Do not allow change of mailbox
-FN on/OFF
Do not allow change of node
-HM DPS8
Host type GCOS8
CXI
Host type GCOS8 with CXI
DPS7
Host type GCOS7
DPS6
Host type GCOS6
ROUTER
Host type GCOS6 NTM
DN
Host type Datanet application
HostLink
A Host Links system (UNIX/Linux/Windows)
IBM
Host type IBM via Datanet SNA gateway
-IE ON/off
Insert ETX/CR at end of message
-II nn/15
Inactivity timer in minutes before automatic
disconnect
-IOC n
Periodically (every n seconds) update IO counts for
the session. Reported by Ggate to Gproxy.
-LM T32782
Log mode, for host type IBM only
-LN xxxx
Local node name used when accepting incoming
connection (if other than default local SCID)
-LT xxxx
Local node name used for outgoing connections (if
other than local SCID)
Gline Line Handlers and Configuration
33
G&R
Parameter
Description
-MN xxxxxxxx
-LMB
Local mailbox name
-MX xxxx
Local mailbox extension.
-NA xxx yyy zzz
Send statistics to Gproxy network administration
stations (up to 4 IP addresses may be given)
-NB on/OFF
Enable broadcasting for any/all Gproxy stations
-PCO xxxxxx
Associated printer session connection name
-PCN on/OFF
Associated printer session auto-connect
-PTS ON/off
Associated printer session turn simulation
-PL nnn
Page/screen length of terminal in lines (max. 255)
-SX on/OFF
Scandinavian transliteration
-S_ on/OFF
Trace session events and transport data
-TI xxxx
Terminal identity sent to host
-TM xxxxxx
-MD
-MDMP
Terminal type to sent to host. The list of recognized
types follows:
TTY33
TN300
Async, echo/character mode, treated as TTY
TTU8221
TTU8223
Async, echo/character mode, treated as TTY
VIP7801
VIP7802
Async, echo/character mode, treated as TTY
TXT7801
TXT7802
Async, but in text/forms mode
VIP7804
VIP7805
Sync, text/forms mode
VIP7804V VIP7805V
Sync 72-line text/forms mode
VIP7814
Sync, text /forms. Unlimited attributes
VIP8800
8-bit ASCII terminal. Forces -CS ASCII
VIP9800
8-bit PLW for GCOS7 Diane. -CS EBCDIC
HDS5
TWS2255
Async HDS3/5/7, echo/char mode, treated as TTY
HDS5T
TXT2255
Async HDS3/5/7 in text/forms mode
34
Gline Line Handlers and Configuration
G&R
Parameter
Description
HDS7
7800 8-bit 72-line ASCII terminal -CS ASCII
TWS2255V
VIP7700 VIP7760
Early sync text/forms terminals. Replaced by
VIP7800 and DKU
DKU7001 DKU7002
Async, treated as TTY
DKU7102
Async, but with forms and attributes
DKU7007 DKU7107
Sync, text/forms
DKU7007D DKU7107D
Sync, text/forms, supporting local forms
DKU7211 DKU7211D
Colour model, without/with local forms
DKU9107
8-bit PLW DKU for GCOS7 Diane. -CS EBCDIC
DKU722X PRT722X
Printers for DKU.
A2
A2 same as PRT722X. TTU is an async printer
TTU8126
PRT9220
8-bit printer for GCOS7 Diane. -CS EBCDIC
IBM3270 IBM3270A
EBCDIC/ASCII 3270 models
IBM3278 IBM3278A
EBCDIC/ASCII 3270 models
IBM3287
Printer
DSAIP
DSA information processor. DSA type is1001
HXnnmm
nnmm are four hex digits
nn
list, 10 for information processor, 20 for terminal
mm
DSA code of processor or terminal
HX0000
Some CPI-C application/application connections
BROWSER
Terminal for TDS-Web and Web8
-UD xxxxxx
-UR
-STR
-STRG
Default ‘GRTSID/LID/user string’ for GCOS8
-WI nnn
Page/screen width in characters (max. 255)
Gline Line Handlers and Configuration
35
G&R
DSA and DIWS parameters in detail
-LI DSA and -LI DSA:GATEWAY
Also -LI DIWS and -LI DIWS:GATEWAY
These parameters start the DSA/DIWS line handler and select the protocol. If
the colon and a gateway name are included, the handler is started on the Ggate
gateway with the symbolic name or IP address GATEWAY. It also signals that
the parameters following are for the line handler. The first group of line handler
parameters MUST be preceded by a -LI parameter.
Parameters to Host Links applications are positional in the sense that they
must be delivered to either the application or to the line handler. Parameter
-USER can be used to switch back to parameters for the application and
-HOST to switch back again to the line handler. They must be repeated if
necessary before each group of parameters.
-AM SNM/GEN/AST
v78sim -li dsa -hm DPS6 -am gen
This parameter sets the communication parameters needed for connections to
applications that do not follow the normal pattern.
When host mode (-HM) DPS6 has been specified the default is SNM. This sets
communication mode to TWAI (half duplex) and communication protocol to
DSA300. The default is GEN (generic) for other mainframes. You can use
-AM GEN to override the default for DPS6. The handler will then let the DPS6
side select between full or half duplex communication.
This parameter may also be used to set AST mode, which is needed to connect
successfully with the AST mailbox on Datanets.
-AW on/OFF
Macro driven connects or applications using GlAPI sometimes start before the
session is fully established because some host applications give Host Links
products the turn, and then take it back, causing the macro to fail. This
parameter causes the line handler to wait until the first message is received
from the host before telling the application that the session is established.
36
Gline Line Handlers and Configuration
G&R
-BT 1/2/3
This parameter changes the default for the break signal. The default for
DSA200 is ‘Attention 1’ (-BT 1), with ‘Attention 2’ (-BT 2) used in special
circumstances. The default for DSA300 is ‘data attention’ (-BT 3). Data
attention is normally negotiated when needed by the mainframe, and this
parameter is not necessary.
-CM xxxx
qsim -li dsa -cm TWAI
This parameter sets a connection mode to be suggested to the other party when
the connection is initiated. Four connection modes are supported:
TWSI
Two Way Simultaneous Initiators turn. The applications can send
without having 'turn'. The application establishing the session starts.
TWSA
Two Way Simultaneous Acceptors turn. The applications can send
without having 'turn'. The application accepting the session starts.
TWAI
Two Way Alternate Initiators turn. The applications must have 'turn' to
send. The application establishing the session starts.
TWAA
Two Way Alternate Acceptors turn. The applications must have 'turn' to
send. The application accepting the session starts.
By default the handler offers to do both TWS and TWA and leaves the initial
choice of turn to the other end. When Gline receives an incoming connect it
accepts whatever the other end suggests unless you set the -CM parameter.
Gline Line Handlers and Configuration
37
G&R
-CO xxxxxx
qsim -li dsa -co b8dcacce
This parameter sets a symbolic connection name. The line handler parameters
are set in dsa.cfg for the CONAME. The line handler processes the -CO
parameter by first resetting all line handler parameters to their default value,
canceling any parameters set before -CO, and then expanding the CONAME.
Any parameters after the -CO override the parameters set by the expansion, if
allowed in dsa.cfg. Those of you familiar with DNS will notice many
similarities between a connection name and the DNS correspondent object.
-CP xxxxxx
qsim -li dsa -cp DSA300
This parameter forces the connection protocol to DSA200 or DSA300. For
host modes: DPS7, DPS8 and UNIX the default connection protocol is
chosen by the host (historically it was DSA200). For host mode DPS6, CXI,
IBM, ROUTER and DN the default is DSA300.
-CS xxxxxx
qsim -li dsa -hm dps7 -cs ASCII
This parameter sets the character set for the session. The default value is
EBCDIC for IBM, and for GCOS7 except when using an ASCII terminal mode.
It is ASCII for all other connections.
-CW nn
qsim -li dsa -cw 10
This parameter defines the time in seconds that Gline waits for a connection to
complete before interrupting it and declaring it to be unsuccessful (default 30
seconds).
-D_ on/OFF
38
Windows
Server
gspool -id gs1 -ps \\SERVER\LEXMARK
-li dsa -da tptst -d_ on
UNIX
Linux
gspool -id gs1 -pc lp -li dsa -da tptst
-d_ on
Gline Line Handlers and Configuration
G&R
This parameter enables the line handler’s data trace. Data sent and received to
the client application is written to a file in the Host Links debug directory. If the
-PCO parameter is included an additional trace file is written for the printer
session. The trace file generated when this parameter is set, can be used as input
to various debug tools used by G&R support in order to reproduce e.g.
emulations problems. See section entitled Host Links trace.
Default connection parameters
These parameters set defaults for connect parameters that would otherwise have
to be given in the connect command.
-D? -PW, -PSSW xxxxxx
qsim -li dsa -d? garpassw
This parameter defines the default password for the mainframe.
-DA, -DMB xxxxxx
qsim -li dsa -da tss
This parameter defines the default application mailbox for the mainframe
application. It may be up to 12 characters in length. Characters 9-12 become the
extension and can be set separately with -DX.
-DB, -BA -BILL xxxxxx
qsim -li dsa -db expensive
This parameter defines the default billing for the mainframe.
-DN, -SCID xxxxxx
qsim -li dsa -dn b8dt
This parameter defines the default node for the mainframe. It must be an RSC
record in the dsa.cfg configuration file.
-DP, -PJ -PROC xxxxxx
qsim -li dsa -dp unixcn
This parameter defines the default project for the mainframe.
Gline Line Handlers and Configuration
39
G&R
-DU, -USR, -USERID xxxxxx
qsim -li dsa -du mmluser
This parameter defines the default userid for the mainframe.
-DX, -EXT xxxx
qsim -li dsa -hm cxi -dx gr01
This parameter defines the default mailbox extension for the mainframe. The
mailbox extension is used when connecting to CXI (GCOS8) subsystems such
as TP8 (CXI requires that -HM CXI be set), and will normally contain the
LID (Logical ID). The mailbox extension can be up to 4 characters long.
Flow control parameters
You can use the following parameters to ‘throttle’ host output, and prevent
accumulation of large amounts of unprocessed data on the client side, where it
might be lost in case of a client failure.
-EE on/OFF (DSA200 to GCOS8 only)
qsim -li dsa -ee on
This enables end-to-end-ACK. The line handler attempts to negotiate EEACK
with the DAC or DAC-Q gateway. If successful Gline acknowledges DSA
records that request it by sending the required ACK as an OSI session
expedited message. EEACK is designed to delay further mainframe output until
the current block has been processed. It is often used by applications that send
print reports to slow ROP printers connected to the front-end, to stop
accumulation of unprocessed print blocks. Normally G&R products can process
blocks faster than the line speed so this is never necessary.
-DEE on/OFF (DSA200 to GCOS8 only)
gspool -ts -li dsa -dee on
The line handler attempts to negotiate EEACK with the DAC or DAC-Q
gateway, but it converts it to a ‘turn’ based mechanism on the client side. If
successful Gline will convert any received DSA record that requests an ACK to
be an EGI (End of Group) record, giving the ‘turn’ to the G&R application.
When the application replies Gline will ACK the previous record. This will
stop accumulation of unprocessed host output in the Gline buffers.
40
Gline Line Handlers and Configuration
G&R
Making connect parameters fixed value
The following parameters stop the user from changing connection parameters
that are set in the configuration file.
-FA on/OFF
qsim -li dsa -da tss -fa on
This restricts connections to the default application name (-DA appl). It must
be entered after the -DA parameter.
-FM on/OFF
qsim -li dsa -mn jim -fm on
This locks the mailbox name (-MN mbxname). It must be entered after the
-MN parameter. The local mailbox name is used for unique identification of the
terminal. It can be used to generate the GRID or LID in the Datanet.
-FN on/OFF
qsim -li dsa -dn b8dt -fn on
This locks the configured default mainframe node (-DN node). It must be
entered after the -DN parameter.
General DSA parameters
-HM DPS8/xxxx
v78sim -li dsa -hm dps6
This sets the target mainframe type. You select a set of internal parameters that
control the connection and dialog with the mainframe. The default is DPS8.
mode
Explanation
DPS8
Host type GCOS8 with DAC/DACQ Gateway. This mode is
used when communicating with TSS and DMIV/TP.
CXI
Host type GCOS8 with CXI. This mode is used when
communicating with TP8 and other CXI applications.
DPS7
Host type GCOS7. Used when communicating with GCOS7.
Gline Line Handlers and Configuration
41
G&R
mode
Explanation
DPS6
Used when communicating with GCOS6 systems through SNM.
DN
Host type Datanet. Used when connecting to DNS applications.
ROUTER
Host type GCOS6 NTM.
HostLink
Used when communicating with another Host Links system.
Gmailer and GUFT can make such connections.
IBM
Used when communicating with IBM hosts through the
Janus/OSF gateway in the Datanet.
-IE ON/off
v78sim -li dsa -ie OFF
This controls insertion of ETX/CR at the end of messages. If the terminal is in
the TTY class (e.g. VIP7801) CR is appended, otherwise ETX is appended.
The default is ON for data sent to DPS6 and DPS8 mainframe applications.
-II nn/15
v78sim -li dsa -ii 30
This sets an inactivity timer, which defines in minutes how long the session can
be inactive before being automatically disconnected. By default sessions are
never disconnected. If -ii is used but nn is not set it defaults to 15 minutes. It
can be used at the DSA node level (RSC directive) in the dsa.cfg file to set
the timer for all sessions to a specific remote node.
-LM T32782
g3270 -li dsa -lm d4c32782
This defines a log mode, and is used for IBM mainframes only.
-LN XXXX
gspool -li dsa -ln
This enables accept of incoming connections. The XXXX is optional and
specifies the local node name; otherwise the default node name is taken from
dsa.cfg. XXXX must match an SC record in dsa.cfg.
42
Gline Line Handlers and Configuration
G&R
-LT XXXX
gspool -li dsa -lt grdw
This defines a non-standard local node name for outgoing connections. XXXX
must match an SC record in dsa.cfg.
-MN, -LMB xxxxxx
qsim -li dsa -mn mike
This sets the local mailbox name. It can be up to 12 characters long. Characters
9-12 become the extension and can be set separately with -MX. By default the
handler assigns unique mailbox names based on the program’s process id (pid)
in the form Dnnnnn.
The mailbox name can be used as additional user identification for security. On
GCOS8 systems characters 3 and 4 may be used to generate a GRID (see
-GRID and -NGRID parameters in the DNS configuration), or the first three
(BCD TDS) or four (ASCII TP) characters may be used to generate the LID
(see -LID and -NLID parameters in the DNS configuration). For IBM
(OSF/Janus) connections it can be used to select a specific LU or LU pool.
-MX xxxx
qsim -li dsa -mn arild -mx gr01
qsim -li dsa -mn “arild
gr01”
This defines a local mailbox extension. The mailbox extension is a 4-character
string that is appended to the 8 first characters of the mailbox name. The
mailbox extension can be included in the local mailbox name (-MN) as shown,
but quotes are necessary if spaces are needed to make the mailbox name 8
characters long.
-NA wwwwww xxxxxx yyyyyy zzzzzz
qsim -li dsa -na 192.150.211.11
This directs network administration information from the line handler to
systems running Gproxy. Up to four IP addresses (space separated) can be
included. See also the -NB parameter.
-NB on/OFF
gg_tcp -nb on (-li not necessary for servers)
Gline Line Handlers and Configuration
43
G&R
This enables broadcasting of network administration information to systems
running Gproxy. Broadcasts allow multiple, but unspecified, systems running
Gproxy to monitor G&R products. This is especially important for servers
such as Ggate, GwebS and GlinkJS for which Gproxy can load-balance
and license-share.
-PCO xxxxxx
qsim -li dsa -co tp8_app -pco printsess
This associates a CONAME for a printer with the terminal session. The Bull
mainframes often send print over an independent print session, which has to be
associated with a terminal session so that the print can reach the terminal’s
printer. The printer’s CONAME must be defined in dsa.cfg and must expand
into the set of parameters needed to establish the printer session.
Glink, the Host Links emulators and Pthru can all accept print output
directed by the GCOS mainframe to an independent print session. For example,
print directed to a GCOS7 Twriter queue or TDS/TP8 LID defined as a ROP
printer can be printed on a printer attached to a PC with Glink or to the
configured print path of V78sim or Qsim.
-PCN on/OFF
This causes the associated printer (-PCO) to initiate the connection. The default
is to wait for the mainframe to connect to the printer.
-PTS ON/off
This can be turned OFF if the host does not want to get the 'turn' back each time
it sends 'turn' to the printer. Leave it to the default value in most cases.
-PL nnn
gspool -li dsa -pl 48
This specifies the screen or page length of the terminal in lines (max. 255). The
default value for a screen is 24, and for a printer is 0. It is required by some
mainframe applications that need to know the length of the screen (24 or 72).
Some mainframe print spooling systems have to know the page length of your
printer. You must then add it to the parameters associated with CONAME (-PCO
coname) if you use an attached printer, or to the parameters for Gspool.
44
Gline Line Handlers and Configuration
G&R
-SX on/OFF
qsim -li dsa -sx on
This selects Scandinavian transliteration tables for conversion between
EBCDIC and ASCII. The -SX parameter transliterates EBCDIC #@$ to ASCII
[\]. It is seldom used, even in Scandinavia.
-S_ on/OFF
Windows
Server
gspool -id gs1 -ps \\SERVER\LEXMARK
-li dsa -da tptst -s_ on
UNIX
Linux
gspool -id gs1 -pc lp -li dsa -da tptst
-s_ on
This enables the session trace in the line handler. It documents session,
transport and internal events along with inbound and outbound data for the
transport interface. If the -PCO parameter is used then an additional trace file
will be written for the printer session. See section entitled Host Links trace.
-TI xxxx
qsim -li dsa -ti T1234
This defines the terminal id, used by the line handler when connecting to the
remote system. It can be used by the remote system to generate a LID. The
default value is T000.
-TM, -MD, -MDMP xxxxxx
pthru -li dsa -tm vip7804
qsim -li dsa -tm hx2033
This selects the terminal mode that will be delivered to the mainframe. It tells
the application which terminal presentation protocol you will use. See section
Parameters for DSA and DIWS handlers for possible values.
If you need to use some other mode, and know its hexadecimal identification
(see the DNS V4 - Terminal Management Manual), then you can configure it
using -TM HXxxxx, where xxxx is 2 bytes in hexadecimal.
Gline Line Handlers and Configuration
45
G&R
-UD, -UR, -STR, -STRG xxxxxx
qsim -li dsa -hm dps8 -ur glid
qsim -li dsa -hm dps7 -ur !NEW
This defines the default user record for the mainframe to which you are
connecting. It can be 2-32 characters long, and is normally used to deliver the
GRTS id (GRID) for connection to DAC programs on GCOS8, or the Logical
id (LID) when connecting to TDS or DMIV-TP by DACQ.
When communicating with GCOS7 hosts the string !NEW may be used, which
will force GCOS7 to start the dialog by presenting the top level menu.
Normally it would have tried to reconnect at the level where you aborted in the
previous host session.
-WI nnn
gspool -li dsa -wi 255
This parameter specifies the screen or page width of the terminal in characters
(max. 255). The default value for a screen is 80, and for a printer is 132. It
is required by some host print spooling systems that have to know the page
width used in your printer, and must then be added to the parameters associated
with CONAME (-PCO coname) if you use an attached printer, or to the
parameters for Gspool.
46
Gline Line Handlers and Configuration
G&R
The TCP/IP handler
You start this handler (gl_tcp) when you specify -li tcp as the line
handler for a Host Links product. When you connect from one G&R
product (or GlAPI application) to another the TCP/IP handler uses a ‘raw’
mode; the application data is simply packed in TCP packets and transmitted
with no higher-level protocol involved. Terminal sessions use the Telnet
protocol to reach standard Telnet servers, TN3270/TN3270E to reach TN3270
servers, TN5250 to reach TN5250 servers and TNVIP to reach TNVIP servers.
Terminal sessions use Rlogin protocol when user identification is to be passed
between UNIX/Linux client and server systems.
Making connections using TCP
Accepting a connect
If you configure a local port number (-lp), products and applications can use
the TCP handler to receive connections.
Note that you must give the local port parameter at startup in the command line
or configuration file for it to take effect. You can start two products on the same
or two different systems and then connect from either to the other to establish
interactive communication between two terminals or applications.
Issuing a connect
TCP connections in ‘raw mode’ are always two-way simultaneous. Any
concept of ‘turn’ to determine initiative must be implemented in the
applications. The ‘end of data’ marker is set following criteria depending on
application mode, and is mapped to ‘end of group’ for the application using the
handler. It can be interpreted as ‘turn’.
For TNVIP, TN5250 and TN3270 connections the concept of turn is included
in the protocol, and mapped to ‘end of group’ for the applications using Gline.
Gline Line Handlers and Configuration
47
G&R
Service messages
The TCP handler accepts service messages for connect ($*$CN), disconnect
($*$DIS) and break ($*$BRK) from the communications product using the
handler. You can type them and transmit when using an emulator or
concentrator.
User applications using one of our communications APIs from the GlAPI
library must send the $*$CN, $*$DIS and $*$BRK messages themselves
when the Gline API is used, but they will be sent automatically by CMALLC,
CMDEAL and CMSERR when one of our CPI-C APIs is used.
The connect command
The only information required is the IP address in symbolic or numeric format
and the port number if it is not the standard Telnet port e.g.
$*$CN hostname:portnumber
Make connection to ‘hostname’.
Telnet, TN3270, TN5250 and TNVIP servers are all normally configured to use
the standard Telnet port, and the TN3270, TN5250 or TNVIP dialects are
arrived at by Telnet negotiation.
Note that you can set the default values for the connect commands with parameters in the configuration file, but that if no default is configured then the last
value used for this particular field becomes the default. So if you make an error
in one of the parameters you need not specify the others in your next connect.
If you set all connect parameters in the configuration file you can connect from
most of the Host Links products using a single key connect command, or by
transmitting $*$CN.
48
Gline Line Handlers and Configuration
G&R
The disconnect and break commands
All systems accept:
$*$DIS
force disconnection (normally done by application).
$*$BRK
interrupt application, against turn if necessary.
Parameters for the TCP/IP handler
The following parameters apply to this handler (defaults in uppercase):
Parameter
Description
-LI TCP
Start gl_tcp
-AM XXXXXX
Application mode
RAW
Default for other ports than Telnet
CRTERM
LFTERM
TELNET
Default for the Telnet port
TN3270
TN3270E
TN5250
TNVIP
RLOGIN
-AP on/OFF
Select the printer LU name associated with
the LU name used by the screen (-LU)
-DN hostname:port
Numeric/symbolic IP-address, optional port
-D_ on/OFF
Data trace between application and host
Gline Line Handlers and Configuration
49
G&R
Parameter
Description
-HO hostname:port
Numeric/symbolic IP-address, optional port
-HW n
Enable ‘delayed enclosure’. Number of
sec/10 to wait for more downstream data
before ‘end of group enclosure’ is posted
-LP local_port
Numeric/symbolic: Incoming connections
-LU luname
TN3270 LU name
-DEV devicename
TN5250 device name
-NU on/OFF
Enable Telnet CRNUL mode
-RES mailboxname
Resource name for TNVIP
-RP remote_port
Numeric/symbolic: Outgoing connections
-SU username
User name for Rlogin
-S_ on/OFF
Session trace, internal events and data
-TM terminal_type
Telnet terminal type negotiation
TCP parameters in detail
-LI TCP
This starts gl_tcp. It also signals that the parameters following are for the
TCP line handler. The first group of line handler parameters MUST be
preceded by an -LI parameter.
Parameters to Host Links applications are positional in the sense that they
must be delivered to either the application or to the line handler. Parameter
-USER can be used to switch back to parameters for the application and
-HOST to switch back again to the line handler. They must be repeated if
necessary before each group of parameters.
50
Gline Line Handlers and Configuration
G&R
-AM XXXXXX
This is used to select a mode of operation. The following modes are available:
-AM mode
Description
RAW
In this mode all data is passed to the application with an end
of data marker.
CRTERM
In this mode all data buffers are marked with a ‘more data’
marker until a Carriage Return (CR) is found. When CR is
received the data passed to the application is marked with an
end of data marker.
LFTERM
In this mode all data buffers are marked with a ‘more data’
marker until a Line Feed (LF) is found. When LF is received
the data passed to the application is marked with an end of
data marker.
TELNET
In this mode the Telnet protocol is used for connection, negotiation/setting of Telnet options and data traffic.
TN3270
In this mode the TN3270 protocol (RFC1576) is used for connection, negotiation/setting of Telnet options and data traffic
for a 3270 screen-session. LU name selection and print are
supported using the TN3270 extensions in RFC1646.
TN3270E
In this mode the TN3270 extensions from RFC1647 are used
to improve handling of screen and print sessions.
TN5250
In this mode the TN5250 (RFC1205) protocol is used.
TNVIP
In this mode the TNVIP protocol is used (RFC1921). The
gl_tcp handler acts as a TNVIP client and communicates with
a TNVIP server.
RLOGIN
In this mode the RLOGIN protocol is used for connection.
Telnet
v78sim -li tcp -rp 9998 -am telnet
The default application mode is TELNET for outgoing connections, unless
connecting to a port number other than the TELNET default (23). If another
port is chosen the default mode is RAW, which is also the default for incoming
connections. If Telnet is required on a non-standard port it must be set.
Gline Line Handlers and Configuration
51
G&R
TN3270 and TN3270E
Gweb, G3270 and Gspool use these modes. In TN3270 mode Gweb, G3270
and Gspool can select LU name. Gspool supports TN3270 print as specified in
RFC1646 and used in the SNA gateway from Open Connect Systems.
In TN3270E mode G3270 supports the ATTN and SYSREQ keys as well as
selection of a specific LU name. Gspool can be configured as a generic printer
or associated printer through the use of TCP line handler parameters -LU and
-AP. Microsoft’s MS SNA Server (Windows NT), Bull’s SNA/20 (AIX 4.1)
and MainWay are examples of gateways that support TN3270E (RFC1647).
TNVIP
qsim -li tcp -am tnvip -tm dku7211
v78sim -li tcp -am tnvip -tm vip7814
The Bull TNVIP server on AIX uses a non-standard port, normally 7323, and
requires parameter -rp 7323. The MainWay TNVIP server normally uses the
default (23), but may need the -res parameter to select a specific
configuration. When using TNVIP you must select one of the allowed terminal
types, see -TM.
We have implemented the Telnet and TNVIP client protocols in the interest of
completing our connectivity offer. Please note however that RFC1006 is
supported by all MainWay front-ends with an ONP (Open Network Processor),
and if used when communicating with G&R products it will increase
throughput as compared to using TNVIP. It will also give a real, fully
functional DSA or DIWS session over the TCP/IP network, as compared to the
limited terminal session offered by TNVIP.
-AP on/OFF
Windows
Server
gspool -id gs8 -ps \\SERVER\LEXMARK -li tcp
-am tn3270e -ho some.ibm.system
-lu luname -ap –tm ibm-3287-1
UNIX
Linux
gspool -id gs8 -pc lp –li tcp -am tn3270e
-ho some.ibm.system -lu luname –ap
-tm ibm-3287-1
This tells the TN3270E server that the -LU parameter is the LU name of a
screen, and it must allocate the printer associated with the screen’s LU name in
the TN3270E configuration.
52
Gline Line Handlers and Configuration
G&R
-DN ipaddress:port
v78sim -li tcp -dn 192.150.211.4:9998
This selects the server to which you connect. You can use its numeric IPaddress or you can use its symbolic name. In the latter case it must be registered
in your hosts file or with your name server. You can append a colon and a
numeric port number or use a symbolic name. In the latter case this symbolic
name must be registered in your services file.
-D_ on/OFF
Windows
Server
gspool -id gs1 -ps \\SERVER\LEXMARK
-li tcp -am tnvip -d_ on
-ho some.gcos.system
UNIX
Linux
gspool -id gs1 -pc lp -li tcp -am tnvip
-d_ on -ho some.gcos.system
This enables the line handler’s data trace. Any data sent/received to the client
application is written to a file in the Host Links debug directory. The trace file
generated can be used as input to various debug tools used by G&R support in
order to reproduce e.g. emulations problems. See section Host Links trace.
-HO ipaddress:port
v78sim -li tcp -ho 192.150.211.4:9998
This selects the server to which you connect. You can use its numeric IPaddress or you can use its symbolic name. In the latter case it must be registered
in your hosts file or with your name server. You can append a colon and a
numeric port number or use a symbolic name. In the latter case this symbolic
name must be registered in your services file.
-HW interval (tenths of seconds)
v78sim -li tcp –hw 5
This sets a timeout for signaling 'turn'. It is needed when, after output, the
server does not pass a turn signal to a Host Links client that needs it; typically a
client simulating an asynchronous terminal connected by Telnet (e.g. Gweb
connected to a HVX system). In the example, the line handler will pass the turn
signal (enclosure 3) to the application when 0,5 seconds have passed without
any further output from the server.
Gline Line Handlers and Configuration
53
G&R
-LP local port
myglineapp -li tcp -lp 9999
This parameter selects the local port for incoming connections, and enables
accept of incoming connections. You can use the port number or a symbolic
name. In the latter case this symbolic name must be registered in your services
file. The default is to not accept incoming connections. It defaults to raw mode.
-LU LUname
This is used in TN3270 mode to ask for a specific LU name on the host side.
-NU on/OFF
v78sim -li tcp -nu on
This enables Telnet CRNUL mode. Normally Telnet in ASCII mode encodes a
carriage return (CR) as a Telnet ‘new line’ by appending a line feed (LF). In
this mode a NUL character is appended instead.
-RES resource name
This parameter is used in application mode TNVIP. It selects a non-default
‘mailbox name’, which acts as a special access point in the TNVIP server. It
has a maximum length of 12 characters, and will be appended to the terminal
type (given by the -TM parameter), separated by a delimiter. It is used to select
a specific terminal configuration in the terminal manager.
-RP remote_port
v78sim -li tcp -rp 9998 -am telnet
This selects a remote port for outgoing connections. You can use the port
number or a symbolic name. In the latter case this symbolic name must be
registered in your services file.
The default port number for the Telnet application modes, TELNET, TN3270
and TNVIP is the ‘Telnet’ port number, 23. If you set another remote port the
default application mode is RAW. If you want to use Telnet you must set it.
-SU username
This sets the user name to be used when logging in to the Rlogin server.
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-S_ on/OFF
Windows
Server
gspool -id gs1 -ps \\SERVER\LEXMARK
-li tcp -am tnvip -s_ on
-ho some.gcos.system
UNIX
gspool -id gs1 -pc lp -li tcp -am tnvip
-s_ on -ho some.gcos.system
Linux
This enables the line handler’s session trace. It documents session, transport
and internal events along with inbound and outbound data sent and received
through the underlying socket interface.
-TM terminal_type
This selects terminal type for Telnet negotiation performed in application-mode
TN3270, TN5250 or TNVIP. It is very important to select a terminal type
acceptable to the server (IBM TCP/IP front end, generic TN3270ÙSNA
gateway or the TNVIP server in a Bull MainWay, AIX gateway, GNSP or
Diane).
The 3270 terminal types listed in RFC1340 Assigned Numbers are
IBM-3278-2
IBM-3278-4
IBM-3279-2
IBM-3278-2-E
IBM-3278-4-E
IBM-3279-2-E
IBM-3278-3
IBM-3278-5
IBM-3279-3
IBM-3278-3-E
IBM-3278-5-E
IBM-3279-3-E
The default value in application mode TN3270 is IBM-3279-2-E.
g3270 -li tcp -tm ibm-3279-2-E
The supported 5250 terminal types are (see RFC1205)
IBM-5555-C01
IBM-3477-FC
IBM-3180-2
IBM-3196-A1
IBM-5291-1
IBM-3812-1
IBM-5555-B01
IBM-3477-FG
IBM-3179-2
IBM-5292-2
IBM-5251-11
IBM-5553-B01
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The default value in application mode TN5250 is IBM-3179-2.
G5250 -li tcp -tm ibm-3179-2
For TNVIP the terminal types listed in RFC-1921 are
VIP7700
VIP7760
DKU7005
DKU7007D
DKU7105
DKU7107D
DKU7211
DKU7211D
VIP7804
VIP7804V
VIP7814
HDS7
VIP8800
DKU terminal types ending in D imply local form support. Local forms are not
supported in our UNIX/Linux based DKU emulations (they are supported in
Glink).
qsim -li tcp -am tnvip -tm dku7211
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The X.25 handler
You start the X.25 handler (gl_x25) when you specify -li x25 as the line
handler for a Host Links product. It is only available for the UNIX/Linux
version of Host Links, and only on some of the platforms.
Making connections using X25
Accepting a connect
The X25 handler by default does not accept connections because the ‘outgoing
only’ parameter (-OO) is by default ON. If it is set OFF products and
applications receiving connections can use the handler.
Note that the local sub-address parameter, the local user data parameter or both
must be given at startup in the command line or configuration file to take effect
and direct incoming calls to the correct product. You can start two products on
the same or two different systems and then connect from either to the other to
establish interactive communication between two terminals or applications.
Issuing a connect
X25 connections are always two-way simultaneous. Any concept of ‘turn’ to
determine who may send data must be implemented in the applications. The
handler recognizes the X.25 ‘more data’ flag, and packets with this flag are
delivered as enclosure ‘none’. It delivers the terminating packet without the flag
with enclosure ‘end of group’, and this may be interpreted as ‘turn’.
Service messages
The X25 handler accepts service messages for connect ($*$CN), disconnect
($*$DIS) and break ($*$BRK) from the communications product using the
handler. You can type them and transmit when using an emulator or concentrator.
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User applications using one of our communications APIs from the GlAPI
library must send the $*$CN, $*$DIS and $*$BRK messages themselves
when using the Gline API, but they will be sent automatically by CMALLC,
CMDEAL and CMSERR when one of our CPI-C APIs is used. The PAD
service messages can only be used from the Gline API.
The connect command
$*$CN remoteaddress,userdata
The only information required is the X.25 number to be called in numeric
format, and the user data if needed in hexadecimal. Remote address is given as
a numeric X25 subscription. User data is three hexadecimal bytes.
Note that you can set the default values for the connect commands with parameters in the configuration file, but that if no default is configured then the last
value used for this particular field becomes the default. So if you make an error
in one of the parameters you need not specify the others in your next connect.
If you set all connect parameters in the configuration file you can connect from
most of the Host Links products using a single key connect command, or by
transmitting $*$CN.
The disconnect and break commands
All systems accept:
$*$DIS
force disconnection (normally done by application).
$*$BRK
interrupt application, against turn if necessary.
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Parameters for the X.25 handler
The following parameters apply to this handler (defaults in uppercase):
Parameter
Description
-LI X25
Start gl_x25
-AC on/OFF
Accept reverse charges
-CR on/OFF
Insert CR at end of message
-D_ on/OFF
Write Gline data trace to Host Links debug
-DS xxxxxx/NONE
Default Remote address.
-DU hxhxhx/NONE
Default Remote User data
-EB on/OFF
Use EBCDIC on line
-LU hxhxhx/NONE
Local User data
-HW n
Enable ‘delayed enclosure’. Number of sec/10
to wait for more downstream data before an
‘end of group enclosure’ is posted.
-OO ON/off
Outgoing call only
-PD on/OFF
X29 PAD support
-RC on/OFF
Facility code: Make call with reverse charges
-RF nnn/NONE
Facility code: Receive throughput class
override
-RS nnn/NONE
Facility code: Receive packet length override
-RW nnn/NONE
Facility code: Receive window size override
-S_ on/off
Write Gline session trace to Host Links debug
-SC nn/NONE
Local Sub-address
-SP on/OFF
Send data with even parity added
-UG nnn/NONE
Facility code: Closed User Group
-XF nnn/NONE
Facility code: Transmit throughput class
override
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60
Parameter
Description
-XS nnn/NONE
Facility code: Transmit packet length override
-XW nnn/NONE
Facility code: Transmit window size override
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The Asynchronous (TTY) handler
You start the TTY handler (gl_tty) when you specify -li tty as the line
handler for a Host Links product. It is only available for the UNIX/Linux
version of Host Links.
Making connections using TTY
Accepting a connect
The TTY handler accepts connects in the sense that it sees the status of the line
change if the other side (e.g. a modem) takes up the correct signals, and reports
this as an incoming connect to the Host Links product.
Issuing a connect
TTY connections are always two-way simultaneous. Any concept of ‘turn’ to
determine who may send data must be implemented in the applications. By
default, TTY works completely asynchronously i.e. all data delivered to TTY is
transmitted immediately on the line, and all data received is delivered
immediately to the Host Links product with enclosure none. This applies
even to single characters, so products running in ‘echo’ mode can use the TTY
handler.
There are parameters for setting various control characters as the ‘end of
record’ marker. These parameters implement ‘block mode’ operation. Incoming
data is scanned for the end of record marker, and when found the accumulated
data is delivered as an ‘end of group’ enclosure, which may be interpreted as
‘turn’.
When sending data there are parameters to map enclosure level to control
characters used as ‘end of record’ markers. This functionality is used to deliver
the concept of enclosure and turn to our Glink emulator running on a PC
when connected by an asynchronous line. This is necessary for some
‘synchronous’ emulation modes, particularly Questar DKU emulation.
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Service messages
The TTY handler accepts service messages for connect ($*$CN), disconnect
($*$DIS) and break ($*$BRK) from the communications product using the
handler.
User applications using one of our communications APIs from the GlAPI
library must send the $*$CN, $*$DIS and $*$BRK messages themselves
when the Gline API is used, but they will be sent automatically by CMALLC,
CMDEAL and CMSERR when one of our CPI-C APIs is used.
The connect command
There is no information needed when connecting to an asynchronous line. The
TTY handler does not support dial-up modems.
$*$CN
Connect to the line. This will cause the correct signals to be given on the
physical interface and the other side will recognize the line as active.
You can connect from most of the Host Links products using a single key
connect command, or by transmitting $*$CN.
The disconnect and break commands
All systems accept:
$*$DIS
force disconnection (normally done by application).
$*$BRK
interrupt the application, against turn if necessary.
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Parameters for the TTY handler
The following parameters apply to this handler (defaults in uppercase):
Parameter
Description
-LI TTY
Start gl_tty.
-BM on/OFF
Block mode. ETX/EOT used as end of record mark.
-CR on/OFF
CR mode. CR used as end of record mark.
-D_ on/OFF
Write Gline data trace to Host Links debug directory.
-DN XXXXX
Device name. Name of async port.
-EB on/OFF
Add ETB to send data when enclosure is
e_message
-EX on/OFF
Add ETX to send data when enclosure >
e_message
-HW n
Enable ‘delayed enclosure’. Number of sec/10 to wait
for more downstream data before an ‘end of group
enclosure’ is posted.
-LF on/OFF
LF mode. LF used as end of record mark.
-NX on/OFF
Disable IXON/IOFF.
-S_ on/OFF
Write Gline session trace to Host Links debug
-ST XXXXX
stty options
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DSA Configuration
Step-By-Step Guide
Configuration check list
Before you start to configure the mainframe and Host Links system you must
obtain the configuration parameters you will need. If you already have a
functional network, you do not need to change the configuration of the mainframe. Obtain the parameters from the network administrator.
The mainframe system
You will need:
• The DSA node name (SCID, session control ID) of the system
If DSA session is to be used for DSA200 connections:
• The DSA area address of the host (the TSN, e.g. 01:24)
• The network address of your mainframe system:
If connecting over a TCP/IP network (RFC1006)
• The IP address of the RFC1006 port on the FEP or mainframe
If connecting over a LAN network:
To a front-end:
• The MAC address of the LAN adapter of the FEP
Direct to the mainframe (ISL, FCP, GNSP, Diane):
• The MAC address of the mainframe adapter
If connecting over a private- or public X25 link:
• The X25 address of the FEP to be used
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The Host Links system
• The DSA node name (SCID, session control ID) for the Host Links system
If DSA session is to be used for DSA200 connections:
• The local DSA area address (the TSN, e.g. 05:36)
• The network address of the Host Links system:
If connecting over a TCP/IP network (RFC1006)
• The IP address
If connecting over a LAN network
• Ethernet MAC address
If connecting over a WAN network
• X25 address
Configuring the mainframe
GCOS8 configuration
There are no communication configuration files on GCOS8 unless an FCP8
controller is used. In that case you need to:
Set up the osi.cfg, routes.wdf and loadscen files as described in the
section entitled Sample configuration (node B8DF) on page 74.
Configure the Host Links node with nrsc and nrts directives in the
osi-cfg, for example:
nrsc name=grdl nrts=grdlts proto=dsa
nrts name=grdlts type=diws ivmo=fddi macaddr=0000C0E9A8E6
GCOS7 configuration
The network generation source file must be modified to include the description
of the Host Links node. This is normally done with the SYS or SYSTEM macro
directive, or with an RSYS/RSC pair of directives.
This can be done as follows for a DSA Host Links system:
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RSYS NAME = GRDL, PF = ‘STID/ISO/SID3’, RSC = GRDL;
RSC NAME = GRDL, ADDR = DSA, SCID = 54:060, SVR=NCC1;
Or as follows for a DIWS Host Links system:
RSYS NAME = GRIL, PF = ‘STID/ISO/SID3’, RSC = GRIL;
RSC NAME = GRIL, ADDR = DSA, SCID = 54:060, SVR=NCC1,PRTC=SID;
Front-end configuration
If the connections go through a FEP, the FEP must have both the mainframe
and Host Links systems configured. If you have an operational network the host
is probably already configured (look for an SC directive with the DSA name of
the host).
A host links node can be defined as being of type -NAT ALL, -NAT ISO or
-NAT DSA and the network type can be LAN or X25. The following is an
example of a Host Links DSA node with LAN access. For more detailed
examples please refer to the section entitled Sample dsa.cfg on page 74:
SC
SR
TS
NR
PL
GRDL
GRDL
GRDL
GRDL
GRDL
RMT
ISO
DIWS
LAN1
CSM1
-ADDR 49:002 -NAT DSA -SR GRDL
-TS GRDL
-NR GRDL -CLASS 4 -CRRE 15 -FEN 13 -TPDU 1024
-PL GRDL
-CB ETH1 -ETHAD 0000C0E9A8E6
Note that the GRDL DIWS in the example above means that the transport is
ISO-transport (rather than native DSA-transport), it doesn’t imply that the
session protocol is DIWS. The –NAT DSA directive sets the session protocol to
DSA.
GCOS6 configuration
Access to and from GCOS6 can go via a FEP or directly. In both cases, the
Host Links system must be defined in the network configuration
>sid>clm_net
>wdd>startup>nw_config
(Mod 400 v 3.1)
(Mod 400 v 4.0/HVS1.0 and later).
An example of a LAN connected Host Links system follows:
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SRISO
RSCA
RTSEL
RNSAP
ROUTE
LLAN
LLAN
-RNSAP_NAME NSGRDLI
-NAME GRDL -TYPE D6SC
-RNSAP_NAME NSGRDLI -T_SEL -HEX 4002454C3344 -TU_SIZE
1024 -CLASS 4 -WINDOW 1 -MIN_CRED 1 -NO_CHECKSUM
-NAME NSGRDLI -OWNER ISOT -NSAP NSEN3CI
-NAME RTGRDLI -PROTOCOL CLNP -SUBLAYER LACS –NULL
-LOCAL_SAP LPTP30 -REMOTE_SAP GRDLSAP
-L_USER LPTP30 -R_USER LN3DSAP -FRAME 1497
-L_USER LPTP30 -R_USER GRDLSAP -FRAME 1497
and in >sid>lanc-f
REMSAP
GRDLSAP,,X’20’/X’0000C0E9A8E6’
Another Host Links system
If you want to communicate with a G&R application on another Host Links
node (typically GUFT/GUFTSRV or Gmailer), you need to configure the
remote Host Link node in dsa.cfg. Refer to the next section for details.
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Configuring the Host Links system
Configuring the transport stack
DSA is a session level protocol that runs over a transport stack. Traditionally
DSA ran over the OSI-transport stack and a LAN or WAN network. Today the
vast majority of networks are built of commodity products using the TCP/IP
communications stack. To facilitate use of existing OSI-based applications over
TCP/IP networks a ‘Request for comment’ (RFC1006) was submitted to the
Network Working Group that manages the introduction of Internet standards.
The RFC is entitled ‘ISO transport services on top of the TCP’ and has become
an Internet standard. DSA runs over RFC1006 and TCP/IP networks.
RFC1006 transport
MainWay front-ends with an ONP (Open Network Processor) have RFC1006
support in the standard product, allowing DSA sessions over TCP/IP into the
MainWay. RFC1006 can also be installed in the FCP7 and FCP8 cards to
support DSA connections direct to the hosts without passing through the frontend. The GNSP communications processor of the later GCOS8 systems
supports RFC1006. The Later GCOS7 Diane systems also support RFC1006.
If you use the RFC1006 protocol rather than OSI-transport protocols, you don’t
need any further communications software or configuration of the transport
stack. We provide our own RFC1006 transport stack, which is controlled
completely from dsa.cfg. RFC1006 is an Internet standard protocol that
encapsulates an OSI-transport (TP0) protocol in TCP/IP frames. It is assumed
that TCP/IP is already installed on the Host Links platform.
OSI transport
If you do not have RFC1006 the DSA connections can
traditional way using OSI-transport, which is a requirement
via old-style Datanets. The UNIX supplier typically delivers
deliver the OSI stack on Windows NT/2000. The OSI stack
and configured before the G&R Host Links products can run.
be made in the
when connecting
the stack, but we
must be installed
Some OSI stacks require that the DSA node names (or TSAPs) and or the
network addresses of the local and remote DSA systems are configured for the
stack. Other stacks do not need any of these parameters. For a description of the
various OSI stacks and how to configure them please refer to the Host Links
Installation and configuration manuals for UNIX and Windows.
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Configuring Host Links
It is assumed here that the Host Links software, and OSI-transport, if used, is
already installed on the target platform. For a detailed description of the
installation process, see the Host Links Installation and Configuration
manuals for UNIX and Windows.
The dsa.cfg file
You must configure the local Host Links system as well as the remote host
systems you will access. For the local system you need an SC directive that
contains the DSA session control name and the DSA address if DSA200 is to
be used. The following assumes session control ID grdl and DSA address
54:60.
sc grdl -addr 54:60
For each remote system to which you will connect you need a pair of rsc/ts
directives. The following assumes a host named b7dl with a LAN MAC
address of 080038177777 :
rsc b7dl -addr 1:4 -ts b7dl_lan
ts b7dl_lan -class 4 -ns 080038177777 -tp grdl_lan
Finally for each remote system you need a description of the local entity
(transport provider) that is used to reach that system. The provider is pointed to
by the -tp parameter in the ts directive. The tp directive should have a
-who parameter to identify the provider specifically, and has also an -attach
parameter to define how the transport service is reached, normally it is the
network address.
tp grdl_lan –who Bull -attach 02608c200441
The dsa.cfg file may also contain security filters and detailed connection
parameters used when making defined host connections (CONAME). For a
detailed description please refer to the section entitled The dsa.cfg
configuration file on page 74.
Remember to compile the configuration file using the glcc compiler!
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The listener
The listener is used for distribution of incoming connections from the remote
host(s) to the Host Links applications. The listener must be used if several Host
Links applications will receive incoming connects using the same local DSA
session control name (TSAP).
The listener should be started automatically whenever the Host Links system is
restarted. If the receiving applications are started before the connections arrive
then no listener configuration is necessary. Each receiving application registers
the mailbox name for which it will accept connects with the listener when the
application starts.
If the session listener is to start the Host Links application on demand (when
the DSA connection arrives), then you configure it in the listener’s file:
/usr/gar/servers/NODE.gli/config.xxx
NODE
xxx
DSA session control name of the local system
protocol type (dsa or diw)
A sample directive is:
listen -mn filetran -cmd guftsrv
This would start up the GUFT server application whenever a request for the
mailbox name filetran was received. For details see the section entitled
The DSA and DIWS line handlers, sub-section Accepting connections on
page 21.
Application configuration files
Most of the host links applications have their own configuration files. These are
located under the /usr/gar/config catalog structure and are used to
minimize command line parameters. You do not need to set any of these until
the connections are tested out successfully. These files are described in the
application manuals.
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Establish the physical connections
X25 connections
For a public X25 connection simply connect the appropriate cables to the X25
DCEs. Most DCEs have LEDs that indicate the state of the link. In most cases
the link will be opened when the Host Links platform is started (i.e. before any
connections take place).
For a private X25 connection, you can use a crossed cable (sometimes referred
to as a W8 cable) where the output signals from the Host Links side are used to
provide input signals for the host side. In this case one of the machines (and
only one) must provide clock signals. Otherwise you need a pair of modem
eliminator units (often referred to as MMEs).
Ethernet LAN connections
Connect the LAN adapters to the appropriate LAN segments, if necessary using
media converters, tranceivers etc. etc.
FDDI LAN connection
Connect the FDDI adapter to the FDDI concentrator (either directly to a
MainWay LAN Extender or some other external concentrator).
Test the connections
Make sure the configuration changes described above have been activated. The
DSA configuration file on the Host Links system must be compiled. The
system may need to be rebooted.
An external communications line analyzer tool (Sniffer or equivalent) is
invaluable if you meet serious networking problems. However there are
software tools that may help you analyze most problems.
Mainframe/FEP tools.
The availability of useful tools will vary with the system type and software
version. Please check the mainframe documentation for information.
Most DSA systems have a Network Operator Interface (NOI) program. This is
a very useful tool when testing out connection problems.
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Host Links tools
If you are using OSI-transport there are usually internal debug and trace tools
supplied with the communication stack. Check the documentation from the
stack supplier, and see the platform-specific hints given in the Host Links
installation and configuration manuals for UNIX and Windows.
There are several Host Links utilities and debug tracing routines you can use.
You don’t need to set up any Host Links application to do the initial tests,
simply try
gping xxxx
or
gtrace xxxx
Both these utilities will attempt to connect to the DSA node with the name
xxxx (must be defined in dsa.cfg). The Gtrace utility will trace the
communication calls on the screen as the call progresses.
When starting any Host Links communication application, you can activate a
session trace routine by supplying the -s_ parameter. For example:
qsim ..... -li dsa ...... -s_
This will generate a session trace file in the Host Links debug structure. See the
Host Links Trace section for more detailed information.
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The dsa.cfg configuration file
Overview
One or more local session control entities (SC) must be defined. These are
looked up using the value of the -ln line module option and contain the DSA
session control name and number of the local UNIX/Linux or Windows server
system, to be used by applications accepting incoming connects. The SC is also
used to identify the calling Host Links node on outgoing connections.
Remote session control entities (RSC) must be defined. These are looked up
using the value of the -dn or -scid line module options, the corresponding
node name field in Glink or $*$CN commands in Host Links emulator
products. They contain the DSA session control name and number of remote
systems needed by applications making connects. They also define the transport
station where the remote session control entity is to be found. If there are
several paths to the remote session control entity several transport stations can
be defined for backup or for load balancing.
Transport stations (TS) may be defined. They describe how to open transport
connections to reach remote session control entities (DSA nodes).
Transport providers (TP) may be defined. They describe which transport stack
to use on the local UNIX/Linux or Windows server system.
Symbolic ‘connection names’ (CONAME) may be defined. Clients then connect
using these symbolic names instead of directly specifying a long list of
connection parameters. This feature is similar to the ‘correspondent object’ in
the Bull front-end configuration. Security filters (-FILTER) can be used to
restrict access to these connection names.
A connection name may be defined so it picks up different connection
parameters depending on which client is connecting to it, again by the use of
security filters (PARAMS with -FILTER).
Connection names may also include access to pools of connection parameter
lists, typically used to aid in generation of unique TP LIDs or GRTS IDs. These
pools are also subject to security filtering (POOLS with -FILTER).
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Access to undefined connection names may be configured to be either an error
or to be ignored (COSTRICT).
Arbitrary options or groups of options may be restricted to clients passing a
security filter (-FILTER).
The security filters referred to above are lists of IP addresses, IP network
numbers, names of local hosts or names of applications. Each element in the list
may either be permitted or denied access.
There is no limit on the number of objects that may be defined.
There is no limit on the size of any of these objects.
You configure these features by editing the dsa.cfg text file on the server.
The file path is:
Windows Server
\gar\config\dsa.cfg
UNIX/Linux
/usr/gar/config/dsa.cfg
The formats of the directives in this file are described below. After a change
has been made the glcc configuration compiler program must be run. This
validates that the file is correct and copies/merges it into the file dsa.dat. It’s
the dsa.dat file that is actually used by the Host Links software at
runtime. This file should not be edited directly. Always modify the dsa.cfg
file and run glcc.
Note that editing the dsa.cfg file and running glcc while sessions are active
is explicitly supported. The software has been carefully written to allow
dynamic changes. You’re even allowed to make changes in pool definitions
where some entries are currently in use.
The Windows version of glcc has a -s option (silent mode). This option
suppresses all message box displays, allowing for batch file installations.
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Configuration file directives
In the syntax used below UPPERCASE is used for the fixed keywords and
lowercase for the variable parameters. Brackets [...] are used around optional
keywords. The vertical line | is used to separate alternatives. Symbolic names
you define may be from 1 to 12 characters long and if they contain spaces the
name must be enclosed in quotes. The order of the directives in the file is
irrelevant except for the PARAMS and POOL cases mentioned below. Case is
insignificant throughout the file. Space and tab characters can be placed
anywhere between words and are ignored. Blank lines or lines starting with ‘*’
or ‘#’ are ignored. Comments can be put at the end of lines. The comment must
be started with a # or * character.
SC - Session control
SC name [-ADDR x:x] [-SCID xxxx] [-DFLT] [-UNAME xxxx]
Defines a local DSA session control entity.
The name need not follow DSA name rules; it’s only used as a lookup key for
whatever is specified in the gl_dsa -ln option. In practice it will normally
be the DSA session control entity name (node name). Normally you need only
one of these directives.
-ADDR defaults to 1:1 and is optional. It’s the DSA200 address (AREA:TSN)
and need only be included if you will be using GL_DSA to make DSA200
connections. DSA200 is typically used for DPS7 native DSA access and for
some DPS8 subsystems. The values are given in decimal.
-SCID defaults to be the same as the name when the name is 4 characters or
less in length, otherwise -SCID is required. -SCID may in any case be
specified to override the default. The SCID is used as the calling DSA session
control name on outgoing connections.
-DFLT means this is the SC to use if a gl_dsa -ln option with no node
name is used. Otherwise the first SC defined automatically becomes the default.
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Gline Line Handlers and Configuration
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-UNAME is optional. It’s the system’s UNIX/Linux or Windows server
communications node name. NB! it is not the DSA node name. This name can
be displayed using the command uname –n on UNIX/Linux systems, and
displayed in the Network section of the control panel on Windows server
systems. When looking for an SC the software first looks for one with a
matching UNAME, but if none is found it looks for one without a UNAME. It’s
only of use in setups where multiple UNIX/Linux and/or Windows server
systems share a single dsa.cfg file on a file server.
sc is2c
sc is2c -addr 54:97
sc testsc -scid is2c
RSC - Remote Session Control
RSC name [-ADDR x:x] [-SCID xxxx] [-DFLT] [-II nn]
[-TS tstation [tstation] [tstation]]
Defines a remote session control entity (DSA node).
The name need not follow DSA name rules, it’s only used as a lookup key for
whatever is specified in the gl_dsa -dn parameter, in the node field in
Glink or Host Links emulators $*$CN commands. In practice it will
normally be the DSA session control entity name (node name). You need one
of these directives for each remote node to which you connect or from which
you will receive connects.
-ADDR defaults to 1:1 and is optional. This is the DSA200 address and need
only be included if you will be using GL_DSA to make DSA200 connections to
this node. DSA200 is typically used for DPS7 native DSA access and for some
DPS8 subsystems. The values are given in decimal.
-SCID defaults to be the same as the name when the name is 4 characters or
less in length, otherwise -SCID is required. -SCID may in any case be
specified to override the default. This is the DSA session control name of the
remote system.
-II nn sets an inactivity timer in minutes. Should the session be inactive for
more than the time set here then the session is automatically disconnected. It
defaults to 15 minutes if -ii is specified but nn is not given.
-DFLT means this is the RSC to use if no line handler -dn parameter, $*$CN
nodename or Glink Host node is used when making a connection.
Gline Line Handlers and Configuration
77
G&R
-TS points to a TS (Transport Station) directive somewhere else in the file. If
you omit the option the default TS is used.
rsc is2b
rsc en3e -addr 54:62
rsc is2b -ii 15 -ts fep1_wan
To set up backup routes you just specify multiple -ts routes:
rsc -ts route1 route2 route3
These are then tried in order until a connection succeeds or the end of the list is
reached.
Alternatively to configure load balancing you use:
rsc -ts route1 route2 route3 -lb 60 20 20
In this example route1 gets 60% of the load, route2 20% and route3
20%. If the first priority route has a connect failure the second priority is tried
etc. until a connection succeeds or the last priority is reached. A total of 8
routes can be specified.
The software remembers when a transport disconnection or time-out happens
while trying to connect, and the node is suspended to avoid repeated connection
attempts using a route that is down. The suspension time may be configured
with the -si parameter to the ts directive.
If all routes to a given remote session control ID are marked as down then a
connection is tried using the first priority route. If the connection succeeds that
route is marked as being up again.
TS - Transport Station
TS name -CLASS x -NS xxxx [-TPDU x] [-X25CALL xxxx]
[-X25FAC xxxx] [-EXP] [-NOEXP] [-SI nn] [-DFLT] [-TP tprovider]
Describes how to open a transport connection to reach remote session control
entities (DSA nodes). You need one for each remote transport station to which
you will be connecting. A transport station is the transport service access point,
which can reside in a FEP (Front End Processor) or in the mainframes that have
a direct connect capability, such as GCOS6, GCOS7 with ISL, GCOS7 or
GCOS8 with FCP cards (FDDI adapters), GCOS8 GNSP or GCOS7 Diane.
78
Gline Line Handlers and Configuration
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-CLASS is required and must be set to 0 for RFC1006 connections, 2 for
WAN/X.25 connections and 4 for LAN connections.
-NS is also required and for some stacks is a symbolic pointer into the transport
configuration, but in others is the real network address. It (or the real address it
points to) must be set to the X.25 address of the transport station for
WAN/X.25 connections, the MAC or FDDI address of the transport station for
LAN connections or the IP name or address for RFC1006 connections.
-TPDU defaults to whatever the local transport provider does and is optional.
It’s the maximum transport PDU buffer size. The actual size will be negotiated.
Legal values are 128, 256, 512, 1024, 2048, 4096 and 8192. Some transport
providers will ignore your TPDU size setting and always pick their own value.
The maximum size for a LAN connection is 1024.
-X25CALL is optional and is a string of hexadecimal data that will be included
as call data in the X.25 call request packet. This feature is only supported for
the Bull XTI interface on AIX.
-X25FAC is optional and is a string of hexadecimal data that will be included
as facilities in the X.25 call request packet. Only supported for the Bull XTI
interface on AIX.
-EXP is optional. It forces the use of expedited data on transport stacks where
we don’t normally use it because of problems.
-NOEXP is optional. It suppresses the use of expedited data on transport stacks
where we normally use it.
-SI is optional and specifies how many minutes to suspend after a connect
failure; configuring 0 stops it from being suspended. The default is 15 minutes.
-DFLT mans that this is the default transport station. Otherwise the first TS
automatically becomes the default.
-TP points to a TP directive somewhere else in the file. If you omit the option
the default TP is used.
ts
ts
ts
ts
fep1_wan
fep2_wan
fepl_lan
fepm_lan
-class
-class
-class
-class
2
2
4
4
-ns
-ns
-ns
-ns
123456
888888
080011223344
080011223333 -tp lan
Gline Line Handlers and Configuration
79
G&R
Deriving -NS for FDDI hosts
All Ethernet MAC addresses are in ‘LLC’ format. All FDDI addresses are in
‘SMT’ format. In SMT format you will see the address in the MSB (most
significant bit) form. You will however normally, for instance in the case where
you connect via an Ethernet port of a LAN Extender, see the LLC format only.
If you connect to an FDDI adapter directly or by an FDDI port of a LAN
Extender, you must convert the MAC address to SMT. The way you do this is
to read each octet backwards as shown below:
Example FCP8 Ethernet MAC address = 080038101054
08
00
38
10
10
54
=
=
=
=
=
=
0000 1000 binary, backwards: 0001 0000 = 10
00
0011 1000
0001 1100 = 1C
0001 0000
0000 1000 = 08
= 08
0101 0100
0010 1010 = 2A
So the address to use here is 10001C08082A. A utility, Gmacfix, to convert
Ethernet (LLC MAC) format addresses to SMT format is included in the Gline
package. See the chapter on DSA test utilities on page 109.
TP - Transport Provider
TP name [-WHO BJAMES | BULL | EICON | GAR | HP | MARBEN | SUN ]
[-ATTACH xxxx] [-DFLT] [-UNAME xxxx]
Defines a local transport provider. Although not strictly necessary on some
platforms when there is only one stack installed we advise that it is configured
with a minimum of the -WHO parameter to define the provider.
-WHO explicitly defines the provider.
-ATTACH is used to instruct the software how to attach to the transport service.
For the G&R/RFC1006 transport (all platforms):
Specify the value ‘rfc’ in order to signal the use of RFC1006 over
TCP transport. Please note that in order to be able to accept incoming
connections when using RFC1006 you must start the DSA listener, even
if only one program is accepting connections, and it must be started
from root, since only root can access port 102, which is reserved for
RFC1006.
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Gline Line Handlers and Configuration
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For Marben on Windows servers:
Specify either WAN or LAN.
For SUN
Specify a local network layer address as configured in the local OSI
stack.
For Bull:
Specify the X.25 or MAC address of the local OSI-transport interface
you will be using. Alternatively give the value ‘rfc’ in order to signal
the use of RFC1006, and select the Bull-supplied RFC1006 (NetShare).
On AIX it is also legal to give a value of the form pvc-xxxx to signal
the use of the X.25 PVC named xxxx.
-DFLT means that this is the default transport provider. Otherwise the first TP
defined automatically becomes the default.
-UNAME has the same use here as in SC.
Examples of use on the Bull XTI interface and the Sun Solaris 2.x platforms:
tp wan -attach 123455
tp lan -attach 08001123355
Examples of use on SCO UNIX or System V release 4 on Intel with multiple
OSI stacks installed:
tp wan -who eicon
tp lan -who bjames
Gline Line Handlers and Configuration
81
G&R
CONAME - Connection Name
CONAME name [-DESC desc]
[-FILTER filter]
[-PARAMS params]
[-POOL pool]
[-TYPE TERM | PRINT]
[Gline parameter list]
Defines a connection name. e.g.
coname tssprod -desc “TSS production” -filter block_remote
-scid is40 -dmb tss
* Gline parameter list for all users
The CONAME parameters if used must be on the same line as the CONAME
keyword. The optional list of Gline parameters must be on a single new line
82
-DESC
adds a verbal description of the CONAME. It’s currently unused
except for documentation purposes. Maximum 30 characters.
-FILTER
blocks access to this CONAME unless permitted by the filter.
-PARAMS
points to PARAM directives that add to the line module parameter
list.
-POOL
points to POOL directives that add to the line module parameter
list.
-TYPE
is an optional identifier. If a CONAME is identified as TERM
(terminal) or PRINT (printer) then Ggate (R6.1 and later) will
supply the information to clients that request a CONAME list. The
client can then display the available CONAMES in the appropriate
drop-down lists, to make client configuration user-friendly.
Glink (R7.2 and later) has this functionality.
Gline Line Handlers and Configuration
G&R
Gline parameters
Gline parameters can be added to the CONAME directly, or via PARAMS or
POOL directives. By default Gline parameters can be overridden by the client,
but this can be inhibited using the ‘+’ character as a prefix to the parameter in
the directives in dsa.cfg. The client can be requested to ask for a parameter
interactively using the ‘*’ character for the parameter. If the ‘*’ character is
used as a prefix to a value, the value will be suggested as a default when the
client asks for the parameter.
The set of line module parameters used to finally connect to the host is:
• The list from the CONAME directive
• If -PARAMS is specified this adds the options from all PARAMS directives
with the specified name who’s filters, if any, allows the client to access
them. The order in which the options are added is that in which they are
found in the dsa.cfg file
• If -POOL is specified it selects the first POOL directive in the dsa.cfg
file with the specified name and a filter, if present, that allows the client to
access it. The parameters from a random, as yet unused, line of parameters
in the POOL directive are added
• Finally this set of parameters is overridden by any parameters from the user.
Note that the parameters from the user will not override any which have been
inhibited using the ‘+’ prefix. Note also that any RESTRICT that applies to the
client will be applied to parameters supplied by the client, and may cause
rejection of the connect attempt.
PARAMS - Parameters
PARAMS name [-FILTER filter]
Gline parameter list
Defines connection parameters. There may be multiple PARAMS directives with
the same name, and all will be examined as candidates for addition to the
parameter list for the client. If a filter is specified then only clients that are
permitted by it get the parameter list added. Several CONAME directives can
point to the same PARAMS directives.
Example, two users pick up different parameters from two PARAMS directives:
Gline Line Handlers and Configuration
83
G&R
coname tssprod -desc “TSS production system” -params tssprod
-scid is40 -dmb tss
* Gline parameter list for all users
params tssprod -filter john
-usr john -pw calvin
* parameters for John only
params tssprod -filter sue
-usr sue -pw hobbes
* parameters for Sue only
POOL - Parameter Pool
POOL name [-FILTER filter]
Gline parameter list
[Gline parameter list]
Defines a pool of connection parameters. There may be multiple POOL
directives with the same name. They will be examined in the order in which
they are found in dsa.cfg. If a filter is specified then only clients permitted
by it can access the pool. The first POOL with the correct name and permission
is selected. Several CONAME directives can point to the same POOL and the
pool is then shared between clients connecting to the different CONAME
directives. Each Gline parameter list line in the pool is independent of
the others. They are allocated in round-robin order and the software is careful
never to allocate the same line again as long as it is in use by a client. Typically
the parameter lines will define unique LIDs to be shared by a group of clients.
Example: three pools of mailbox extensions for use as TP8 LIDs, one for users
in Oslo, the second for users in Bergen and the third for users in Lillehammer:
coname tp8prod -desc “TP8 production system” -pool tp8prod
-scid is40 -dmb tss
* Gline parameter list for all users
pool tp8prod -filter oslo
-dx os01
* will be
-dx os02
* will be
-dx os03
* will be
-dx os04
* will be
picked
picked
picked
picked
up
up
up
up
by
by
by
by
one
one
one
one
Oslo
Oslo
Oslo
Oslo
user
user
user
user
pool tp8prod –filter Bergen
-dx be01
* will be picked
-dx be02
* will be picked
-dx be03
* will be picked
-dx be04
* will be picked
up
up
up
up
by
by
by
by
one
one
one
one
Bergen
Bergen
Bergen
Bergen
user
user
user
user
pool tp8prod -filter lillehammer
-dx li01
* will be picked up by one Lillehammer user
filter oslo
permit tcp 192.150.211.0/24
84
* Class C network
Gline Line Handlers and Configuration
G&R
filter
permit
filter
permit
bergen
tcp 192.150.212.[00-10]
lillehammer
tcp 192.150.213.4
* macro for group
* single user
Macro facility
A simple macro facility eases configuration of parameters for large numbers of
sessions. It expands numeric ranges only. Multiple macros on the same line
must have the same range. You may use up to 8 macros on each line.
e.g.
-mn mbx[01-03] -dx 00[12-14] -ur userrec[9-11]
expands to:
-mn mbx01 -dx 0012 -ur userrec9
-mn mbx02 -dx 0013 -ur userrec10
-mn mbx03 -dx 0014 -ur userrec11
The expansion will use the same number of digits if a numeric is written with
leading zeroes i.e. 9-11 could have been written 09-11 to make the first
expansion userrec09.
filter bergen
permit tcp 192.150.212.[00-03]
* macro for group
expands to:
filter
permit
permit
permit
permit
bergen
tcp 192.150.212.00
tcp 192.150.212.01
tcp 192.150.212.02
tcp 192.150.212.03
COSTRICT - Connection Name Strictness
COSTRICT [-FILTER filter]
Defines strict handling of missing connection names. If a client connects and
specifies an undefined connection name then the default is to simply ignore this
and allow the client to continue and specify other parameters. If you specify
COSTRICT then the default instead gives an error message. If you specify a
filter then an error message is given only to those that are permitted by it.
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85
G&R
RESTRICT - Parameter Restrictions
RESTRICT [-FILTER filter]
Gline parameter list
[Gline parameter list]
Defines Gline parameters that should be restricted from general use. If a filter is
specified then only those that are permitted by it are subject to the restrictions.
While this may seem backwards at first glance it was done this way so that all
the directives can be read the same way, namely that the directive is visible
only if the filter specified returns the client as permitted. You can specify an
unlimited number of RESTRICT parameters and they will all be processed.
Each Gline parameter list line within a RESTRICT is independent of
the others. All Gline parameters in a Gline parameter list line need to
be matched by options given by the client for the restriction to take effect. An
asterisk (*) can be specified as a wild card to match any parameter value.
Restrictions are only checked against parameters specified directly by clients,
not against parameters specified in other parts of the dsa.cfg file.
Examples:
* Absolutely nobody is allowed to use his/her own SCID.
restrict
-scid *
* Those permitted through the remote_users filter are not allowed
* to use any pair of -scid or -dmb options, nor allowed to
* use the -ln option.
restrict -filter remote_users
-scid * -dmb *
-ln *
filter remote_users
* note that this filter allows all IP addresses
* so the restrict above applies to all remote users
permit TCP *
FILTER - Access Filter
FILTER name
PERMIT|DENY TCP|LOCAL|APPL|USER|NODE *|expression
...
Defines a filter for security screening. A filter is a list of one or more lines,
each starting with PERMIT or DENY. Each line is checked in sequence until a
match is found, then the permit/deny status of that line is returned. There’s an
implicit line to deny everything at the end of the definition. Local clients
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Gline Line Handlers and Configuration
G&R
running Qsim, V78sim etc. will match filter lines with LOCAL specified.
Local clients are the Host Links products on the system that owns the
/usr/gar (UNIX/Linux) or \gar (Windows) directory, or on other systems
that mount it over the network. Clients coming in through Ggate will match
filter lines with TCP specified. Any client will match filter lines with APPL
specified.
TCP expression:
The expression is IPaddress[/bits]. The /bits part specifies how
many bits of the IP-address will be used during matching. The default is 32, i.e.
use the entire IP-address. If you want to permit/deny the whole of a class C
network specify 24 bits. For the whole of a class B network specify 16 bits.
For the whole of a class A network specify 8 bits. The asterisk (*) matches
anything. Only clients coming into Ggate will match TCP filters.
LOCAL expression:
The expression is the system’s UNIX/Linux or Windows communications node
name. NB! it is not the DSA node name. This name can be displayed using the
command uname –n on UNIX/Linux systems, and displayed in the Network
section of the control panel on Windows server systems. Any application
running on a system with this communications node name will match the
expression. An asterisk (*) matches any communications node name. A specific
expression is only needed when you filter applications running on one of
several systems sharing a single dsa.cfg on a file server.
APPL expression:
The expression is one of Glink, Qsim, V78sim, Pthru, G3270, G5250,
Padcon, Gmailer, Gspool, GUFT, GUFTSRV or Unknown.
filter block_remote
permit local *
filter allow_ip
deny tcp 192.150.211.4
permit tcp 192.150.211.0/24
permit tcp 18.0.0.0/8
permit tcp 128.38.0.0/16
filter allow_qsim
permit appl qsim
Gline Line Handlers and Configuration
# implicitly denies remote
#
#
#
#
first
allow
allow
allow
deny one terminal
rest of CLASS C network
a class A network
a class B network
# applies to anyone using Qsim
87
G&R
USER expression:
The expression is the user name that is supplied by the client in the ‘logon
packet’ (in the -us parameter). The user name is normally the user account
name in the local client network. The asterisk (*) matches anything. Glink
clients need version 6.1.4 or later. For Host Link applications, release 5.3 or
later is required.
NODE expression:
The expression is the unique workstation (‘node’) name supplied by the client
in the ‘logon packet’ (in the -st parameter). This filter type is suitable in
configuration where the TCP expression cannot be used to identify a particular
workstation i.e. if DHCP is used or in some firewall configurations (the IP
address is generated dynamically). The workstation name is case sensitive. The
asterisk (*) matches anything. Glink clients need version 6.1.4 or later. For
Host Link applications, release 5.3 or later is required.
Use of filters to restrict access
In this example the class C IP networks 192.150.211.0, 193.71.16.0,
193.71.17.0, 193.71.18.0 and 193.71.19.0 should have access to both
CONAMEs. All other IP addresses should only have access to the tp8test
CONAME. Remember there is an implicit ‘deny’ of everything at the end of a
filter.
# define a CONAME for a TP8 test system ‘gartest’ with no filters
# the coname is then available to anyone
coname tp8test -desc “TP8 Testapplication gartest” -pool tp8test
-hm CXI –tm TXT 7801-da gartest -dn ph14
# define a coname for a mailbox ‘2wa-rno’ with a filter allowing only
# the desired IP addresses
coname 2warno -desc “TP8 Testapplication 2wa rec no” -filter external
-hm CXI -tm TXT7801 -da 2wa-rno -dx jimp -dn ph14
filter
permit
permit
permit
external
local *
tcp 192.150.211.0/24
tcp 193.71.16.0/22
# allow Qsim, V78sim etc.
# allow class C network (use 24 bits)
# allow 16, 17, 18 and 19 (use 22 bits)
In this example all IP addresses except the ranges above should be prevented
from specifying any node name or application name parameters directly. This is
typically used to force access to happen through a CONAME.
# define a restrict parameter with a filter that allows through all
# TCP addresses which are to be restricted. The TCP addresses that are
# permitted by the filter meet the restriction
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Gline Line Handlers and Configuration
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restrict -filter internal
# addresses passing the filter cannot choose
-dn *
# the default node to which they connect
-da *
# the application mailbox to which they connect
-ln *
# or to listen for incoming connects
filter internal
deny tcp 192.150.211.0/24
deny tcp 193.71.16.0/22
permit tcp *
# they are not permitted by the filter
# and so DO NOT meet the restriction
# rest are permitted, and meet the restriction
Gline Line Handlers and Configuration
89
G&R
Sample dsa.cfg for RFC1006
GC8F
GC7F
FCP8
FCP7
FDDI
Bull hosts and FEP
G&R Host Links nodes
ONP
1
HL0
2
LAN
HL01
Brief description of the configuration
HL01 - is a Host Links node with a LAN connection to a MainWay
(ONP1). The ONP adapter in the MainWay supports RFC1006 and acts as a
network switch that passes on the DSA session records to GC8F and GC7F.
The MainWay sees HL01 as both a DSA and a DIWS node.
HL02 - is a Host Links node with an FDDI connection directly to the FCP7
adapter of GC7F and the FCP8 adapter of GC8F. GC7F and GC8F see HL02 as
both a DSA and a DIWS node.
GC8F - is a DPS9000 system with an FDDI adapter (FCP8). This is accessed
directly from the HL02 Host Links system (i.e. without going through a
MainWay) for optimal speed and performance.
GC7F - is a DPS7000 with an FDDI adapter (FCP7). This is accessed directly
from the HL02 Host Links system (i.e. without going through a MainWay)
for optimal speed and performance.
ONP1 - is a Bull MainWay that is used for network access from the HL01
Host Links system to GC8F and GC7F.
90
Gline Line Handlers and Configuration
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The Host Links node ‘HL01’
Windows Server
UNIX/Linux
\gar\config\dsa.cfg
/usr/gar/config/dsa.cfg
# Local Host Links DSA node HL01
#
sc hl01 -addr 49:001
# local G&R RFC1006 transport provider (IP=202.1.1.1)
tp rfc -who gar
#
# Remote DPS7000, DSA node GC7F thru LAN connected ONP1
#
rsc gc7f -addr 49:007 -ts onp1
#
# Remote DPS9000, DSA node GC8F thru LAN connected ONP1
#
rsc gc8f -addr 49:008 -ts onp1
# transport station route (Mainway)
ts onp1 -class 0 -ns 202.1.1.5 -tp rfc
The Host Links node ‘HL02’
Windows Server
UNIX/Linux
\gar\config\dsa.cfg
/usr/gar/config/dsa.cfg
#
# Local Host Links DSA node HL02
#
sc hl02 -addr 49:002
# local G&R RFC1006 transport provider (IP=202.1.1.2)
tp rfc -who gar
#
# Remote DPS7000, DSA node GC7F thru FCP7
#
rsc gc7f -addr 49:007 -ts fcp7
# FCP7 transport station
ts fcp7 -class 0 -ns 202.1.1.7 -tp rfc
#
# Remote DPS9000, DSA node GC8F thru FCP8
#
rsc gc8f -addr 49:008 -ts fcp8
# FCP8 transport station
ts fcp8 -class 0 -ns 202.1.1.8 -tp rfc
Gline Line Handlers and Configuration
91
G&R
The DPS9000 node ‘GC8F’
Osi.cfg
STACK I_NOERRFLAG
NETSHARE
TCIVMO NAME=IVMO8 TPUSIZE=1024
NRSC NAME=HL01 NRTS=HL01TS
NRTS NAME=HL01TS TYPE=INET IP_ADDR=202.1.2.1/102
NRSC NAME=HL02 NRTS=HL02TS
NRTS NAME=HL02TS TYPE=INET IP_ADDR=202.1.2.2/102
Routes.wdf
create_node_route_list hl01 –nr1 fe4
create_node_route_list hl02 –nr1 fe4
Loadscen
sti W3NX00T20010
macaddr 080038100FE8
The DPS7000 node ‘GC7F’
Netgen’
SYS
GC7F PF=LSYS SCID=49:007 ISL=(54-43-55,EA81) OBJLIST=1,TSEL=47433746,
NSAP=39250F03450001080038100FE7;
COMM 'NCC1',
SVR NAME=NCC1 TYPE=OCS LCT=EA71 BUFNB=(32768,32768) BUFSZ=256;
LCT NAME=EA71 TYPE=NCC IADDR=08-00-38-10-0F-E7 MAXCN=5000 WATCH=1200;
COMM
RSYS
RSC
RSYS
RSC
'REMOTE HOST LINKS SYSTEMS';
NAME=HL01, PF='STID/ISO/SID3', RSC=HL01;
NAME=HL01, ADDR=DSA, SCID=49:001, SVR=NCC1;
NAME=HL02, PF='STID/ISO/SID3', RSC=HL02;
NAME=HL02, ADDR=DSA, SCID=49:002, SVR=NCC1;
COMM 'MAINWAY';
RSYS NAME=ONP1, PF=MW2000, RSC=ONP1; MW2000=’MW2000/DNS-E/V1’
RSC NAME=ONP1, ADDR=DSA, SCID=49:005, SVR=NCC1;
FCP7
STACK TSNAME=NCC1
TCIVMO NAME=IVMO1 TPUSIZE=1024
LTS_INET NAME=LTSNEW IP_ADD=202.1.1.7 PORT=102 MAXTC=4500 TPUSIZE=4096
NRSC NAME=HL01 NRTS=HL01NCC1
NRTS NAME=HL01NCC1 TYPE=INET IP_ADD=202.1.1.1 PORT=102
NRSC NAME=HL02 NRTS=HL02NCC1
NRTS NAME=HL02NCC1 TYPE=INET IP_ADD=202.1.1.2 PORT=102
92
Gline Line Handlers and Configuration
G&R
The MainWay
&
&
LOCAL MAINWAY NODE 'ONP1', ADDR=49:005
&
SC ONP1 LOC -ADDR 49:005 -ISOPLG
TS ONP1 LOC -ADDR 49:005 -NET 492008003811008D -CNX 900
&
&
&
SC
SR
TS
NR
PL
&
&
&
SC
SR
TS
NR
PL
&
&
&
SC
&
SR
TS
&
NR
LL
CT
&
DPS7000, SC RMT GC7F
GC7F
GC7F
GC7F
GC7F
GC7F
RMT
ISO
DIWS
LAN1
CSM1
RMT
ISO
DIWS
LAN1
CSM1
ADDR=49:007
-ADDR 49:007 -SR GC7F -NAT DSA
-TS GC7F
-NR GC7F
-PL GC7F
-CB ETH1 -ETHAD 080038100FE7
DPS9000, SC RMT GC8F
GC8F
GC8F
GC8F
GC8F
GC8F
-SERV CONS
ADDR=49:008
-ADDR 49:008 -SR GC8F -NAT DSA
-TS GC8F
-NR GC8F
-PL GC8F
-CB ETH1 -ETHAD 080038100FE8
Host Links node SC RMT HL01, 49:001
HL01 RMT -ADDR 49:001 -SR HR01
HR01 IPS -TS HR01
HR01 IPS -IPADD 202.1.1.1 -CT CTIP
NRIP IPS -CT CTIP
LLIP IPS -CT CTIP
CTIP IPS
Gline Line Handlers and Configuration
93
G&R
Sample dsa.cfg for OSI Transport
This sample configuration is meant to cover many of the most used
configuration scenarios and will hopefully be useful when setting up new
configurations or modifying existing ones. It shows various types of Bull mainframe systems and some G&R Host Links nodes. Both LAN and WAN
configurations are included in addition to a simple example of an FDDI link.
The various configuration files do not necessarily include all of the other accessible systems, but most combinations of interconnection are included.
Some of the mainframe configuration examples are not complete, but the names
and addresses used in the primary network are included. Although many of the
examples have been used on the systems in question, differences in
configuration syntax on different software releases should be expected and a
copy of the necessary configuration manuals is essential when building a
configuration.
Sample configuration
Bull hosts and FEP
G&R Host Links nodes
B8Dx
LAN
ISL
GRIL
GRDL
B6Dx
B7DL
DIA
DN01
PSI
FDDI
B7DC
WAN
B7DF
FCP8
B8DF
94
GRDW
GRIW
Gline Line Handlers and Configuration
G&R
Brief description of the configuration
For simplicity all GCOS6 hosts are referred to as DPS6s, all GCOS7 hosts as
DPS7s and all GCOS8 hosts as DPS8s except for the ones with FCP8 adapters,
which are referred to as DPS9000s:
GRDL - is a Host Links node with both LAN and WAN connection. It is
configured to reach a DPS7 over LAN (ISL) and a DPS8 over WAN (through
the FEP). It can be seen as both a DSA and a DIWS node by the mainframes.
GRIL - is a Host Links node connected to the LAN but also configured to
access a DPS9000 over FDDI (directly through the FCP8 controller). Over the
LAN it can access the DPS6, the DPS7 (directly on ISL) and the DPS8 via the
LAN adapter of the FEP.
GRIW - is a Host Links node with X25 access to a DPS7 and a DPS8 via
the FEP. It is configured as a DIWS node in the host configurations.
GRDW - is a Host Links node with X25 access to a DPS6, a DPS7 and a
DPS8. It is configured as a DSA node in the host configurations.
B8DF - is a DPS9000 system with an FDDI adapter (FCP8). This is accessed
directly from the GRIL Host Links system (i.e. without going through a
MainWay) for optimal speed and performance.
B6Dx - is a DPS6 with both WAN and LAN capabilities. It has 3 separate
session control entities defined, but the most important one here (as far as
terminal sessions is concerned), is B6DL (the SNM session control name).
B7DL - is a DPS7 with a MicroFEP and an ISL. The Host Links nodes are
configured to reach this system directly over LAN (i.e. the ISL) without passing
though the MicroFEP.
B7DF - is a DPS7 with an FCP7 (FDDI controller). The Host Links nodes
are configured to reach this system directly over FDDI.
DN01 - is a Bull FEP (Datanet) that is used here for network access from the
various Host Links nodes to DPS8 and DPS7.
B8Dx - is a Bull DPS8. Two session control names are defined; B8DT for
access to DNET/ROUT applications (TSS, DMIV/TP etc) and B8DC for CXI
applications (TP8 etc).
Gline Line Handlers and Configuration
95
G&R
The configuration files
The Host Links node ‘GRDL’
Windows Server
UNIX/Linux
\gar\config\dsa.cfg
/usr/gar/config/dsa.cfg
# dsa.cfg: Configuration for G&R Host Links node GRDL
# Local node. DSA/DIWS type, LAN access and WAN access.
sc grdl -addr 54:60
# Remote nodes accessed by GRDL
# Another Host Links system (GRIL)
rsc gril -addr 54:61 -ts gril_lan
ts gril_lan -class 4 -ns 02608c2d8023 -tp grdl_lan
# A DPS7 system, B7DL, LAN access (over ISL)
rsc b7dl -addr 1:4 -ts b7dl_lan
ts b7dl_lan -class 4 -ns 080038017777 -tp grdl_lan
# The DPS8 system (DNET/ROUT and CXI), accessed over WAN in DN01
rsc b8dt -addr 1:1 -ts dn01_wan
rsc b8dc -addr 1:2 -ts dn01_wan
# The Datanet, used for WAN access to DPS8
ts dn01_wan -class 2 -ns 130399 -tp grdl_wan
# Local transport providers (TP4 and TP2)
tp grdl_lan -attach 02608c200441
tp grdl_wan -attach 130355
The Host Links node ‘GRIL’
Windows server
UNIX/Linux
\gar\config\dsa.cfg
/usr/gar/config/dsa.cfg
# dsa.cfg: Configuration for G&R Host Links node GRIL
# Local node definition. DIWS type for LAN access, DSA used in FDDI
# case. The DSA address is not given here (only necessary for
# DSA200 type of sessions)
sc gril
# Remote nodes accessed by GRIL
# The DPS6 system (SNM and TPI)
rsc b6dl -ts b6dl_lan
rsc b6dt -ts b6dl_lan
ts b6dl_lan -class 4 -ns 080038363E18 -tp gril_lan
# Another G&R Host Links system, GRDL. DIWS type, LAN access.
rsc grdl -ts grdl_lan
ts grdl_lan -class 4 -ns 02608c200441-tp gril_lan
# A DPS7 system, B7DL, LAN access (over ISL)
rsc b7dl -ts b7dl_lan
ts b7dl_lan -class 4 -ns 080038017777 -tp gril_lan
# A DPS8 system, B8DC (CXI), LAN access over DN01
96
Gline Line Handlers and Configuration
G&R
rsc b8dc -ts dn01_lan
ts dn01_lan -class 4 -ns 080038200557 -tp gril_lan
# A DPS8 system, B8DF, direct FDDI access to FCP8
rsc b8df -ts b8df_fddi
#
#
#
ts
NB! the FDDI MAC address (10001c08082a) must be specified
in SMT format. The corresponding MAC LLC address is: 080038101054
For a description of the conversion, see the Gline documentation
b8df_fddi -class 4 -ns 10001c08082a -tp gril_fddi
# Another DPS7 system, B7DF, FDDI
rsc b7df -ts b7df_fddi
ts b7df_fddi -class 4 -ns 10001c08f0ee -tp gril_lan
#
Re NS; the corresponding MAC LLC address is: 080038100f77
# Local transport provider (TP4)
tp gril_lan -attach 02608c2d8023
tp gril_fddi -attach 10005ab83588
The Host Links node ‘GRDW’
Windows server
UNIX/Linux
\gar\config\dsa.cfg
/usr/gar/config/dsa.cfg
# dsa.cfg: Configuration for G&R Host Links node GRDW
# Local node. DSA/DIWS type, WAN access only.
sc grdw -addr 54:58
# Remote nodes accessed by GRDW
# The DPS6 system (SNM), accessed over X25
#
b6dl -addr not necessary, SNM uses DSA300
rsc b6dl -ts b6dl_wan
ts b6dl_wan -class 2 -ns 130405 -tp grdw_wan
# The DPS7 system, accessed over X25 in DN01
rsc b7dc -addr 1:3 -ts dn01_wan
# The DPS8 system (DNET/ROUT and CXI), accessed over X25 in DN01
rsc b8dt -addr 1:1 -ts dn01_wan
rsc b8dc -addr 1:2 -ts dn01_wan
# The Datanet, used for WAN access to DPS7 and DPS8
ts dn01_wan -class 2 -ns 130399 -tp grdw_wan
# Local transport provider (TP2, local x25 number 130366)
tp grdw_wan -attach 130366
Gline Line Handlers and Configuration
97
G&R
The Host Links node ‘GRIW’
Windows
NT/2000
UNIX
\gar\config\dsa.cfg
/usr/gar/config/dsa.cfg
# dsa.cfg: Configuration for G&R Host Links node GRIW
# Local node. DIWS type, WAN access only.
sc griw
# Remote nodes accessed by GRIW
# The DPS7 system, accessed over X25 in DN01
rsc b7dc -ts dn01_wan
# The DPS8 system (DNET/ROUT), accessed over X25 in DN01
rsc b8dt -ts dn01_wan
# The Datanet, used for WAN access to DPS7 and DPS8
ts dn01_wan -class 2 -ns 130399 -tp griw_wan
# Another Host Links system GRDW
rsc grdw -ts grdw_wan
ts grdw_wan -class 2 -ns 130366 -tp griw_wan
# Local transport providers (TP2)
tp griw_wan -attach 130367
The DPS6 node ‘B6Dx’
>WDD>STARTUP>NW_CONFIG:
* Local node B6DL
NODE
-NAME B6DL -PSN 1 -AREA 1 -TSN 5
SC
-Q_CAP 8 -LETTERS 400
-- Local node
-- Max. no of letters
SCA
SCA
SCA
-NAME B6DL -TYPE TDSA
-NAME B6DT -TYPE DSS -TS_ID X’0105’
-NAME B6DD -TYPE D6SC -TS_ID X’0106’
-- SNM DSA session type
-- TPI session type
-- DSA session type
ISOS
TC
-NAME ISOS
-- enables ISO sess.
-LC_CAP 40 -TU_SIZE 1497 -CREDIT 3 -RETRY 3
-T1 10 -T2 60 -T3 5 -T4 5 -T5 2
ISOTC
-NAME ISOT -MAX_REFS 20
LTSEL
-DEFAULT -UPPER_TYPE SWIT
NSAP
-NAME NSB6DL -OWNER DSA
-- used by DSA transport
NSAP
-NAME NSB6DLI -OWNER ISOT
-- used by ISO
SNSAP
-NAME SNB6DL -NTW TELENET -MAXVC 12 -LCNT 1024 1035
-SIZE 128 128 -WINDOW 2 2 -FC -CALL 130405 -LOCAL_SAP LL10
LL
-NAME LL10 -OWNER X25 -PL PL10 -ADDR A
-FRL 133 -T1 3 -WINDOW 7
-- logical link
PL
-NAME PL10 -LRN 10 -TYPE HDLC -SPD 96
-- physical link
* Secondary network
98
--
Gline Line Handlers and Configuration
G&R
TERM
TERM
RTERM
TERM
-NAME SNM150 -MODE USER -NTD NTDVIP -TYPE DKU7107 -EL 150
-NAME ROP150 -MODE IMPLO -NTD NTDVIP -TYPE TTU8125 -EL 150
-NAME PRX150 -CM DSA -AD1 GRDL -AD2 ROPGRDL -GN ROP150
-NAME SNM151 -MODE USER -NTD NTDVIP -TYPE VIP7804
-EL 151,152,153,154,155,156,157,158,159 -- LRNs from clm_user
* Remote nodes
RTSEL
--
-DEFAULT -CLASS 4 -TU_SIZE 1024
-- if no matching RTSEL
* G&R Host Links node GRDL, LAN access, DSA type
SRISO
RSCA
RTSEL
-RNSAP_NAME
NSGRDLI
-NAME
GRDL
-TYPE D6SC
-RNSAP_NAME
NSGRDLI -T_SEL -HEX 40024752444C -TU_SIZE 1024
-NO_CHECKSUM -CLASS 4
RNSAP
ROUTE
-NAME
-NAME
-SUBLAYER
-L_USER
LLAN
NSGRDLI -OWNER ISOT -NSAP NSB6DLI
RTGRDLI -LOCAL_SAP LPTP18 -REMOTE_SAP GRDLSAP
LACS -PROTOCOL CLNP -NULL
LPTP18 -R_USER GRDLSAP -FRAME 1497
* Another G&R Host Links node GRIL, LAN access, DIWS type
SRISO
RSCA
RTSEL
RNSAP
ROUTE
LLAN
-RNSAP_NAME
NSGRILI
-NAME
GRIL
-TYPE IDWS -TSAP_MODE IDS -IMPL_SES DSS
-RNSAP_NAME
NSGRILI -T_SEL -HEX 40014753494C -TU_SIZE 1024
-NO_CHECKSUM -CLASS 4
-NAME
NSGRILI -OWNER ISOT -NSAP NSB6DLI
-NAME
RTGRILI -LOCAL_SAP LPTP18 -REMOTE_SAP GRILSAP
-SUBLAYER LACS -PROTOCOL CLNP -NULL
-L_USER
LPTP18 -R_USER GRILSAP -FRAME 1497
* Yet another G&R Host Links node GRDW, X25 access, DSA type
SRISO
RSCA
RTSEL
-RNSAP_NAME
NSGRDWI
-NAME
GRDW
-TYPE D6SC
-RNSAP_NAME
NSGRDWI -T_SEL -HEX 400247534457 -TU_SIZE 2048
-NO_CHECKSUM -CLASS 2
RNSAP
-NAME
NSGRDWI -OWNER ISOT -NSAP NSB6DLI
ROUTE
-NAME
RTGRDWI -LOCAL_SAP SNGRDL -REMOTE_SAP SNGRDWI
•
SUBLAYER X25 -PROTOCOL X25 -ENCODING TP
RSNSAP
-NAME
SNGRDWI -CALL 130366
* Network Administration, left out of example
LANC-F :
*
* DPS6 ‘lanc-f’ directives for B6DL, DNTD and DSA SAPs
*
GRPSAP GNTD,XPT18/LNTD18
*
TLIN XPT18,CLS4,X’1800’,0
LCLSAP LNTD18,LLC18/LXPT18,X’0002’,CONN=16,MAXPDU=1024
*
LLIN LLC18,TYP1,X’1800’,0
*
Gline Line Handlers and Configuration
99
G&R
* various local SAPs
*
LCLSAP LXPT18,,X’F8’/X’080038363E18’
LCLSAP LDDS18,,X’14’/X’080038363E18’
LCLSAP LTNV18,,X’28’/X’080038363E18’
LCLSAP LPTP18,,X’20’/X’080038363E18’
*
* GRDL SAP and MAC address
*
REMSAP GRDLSAP,,X’20’/X’02608C200441’
*
* GRIL ditto
*
REMSAP GRILSAP,,X’20’/X’02608c2d8023’
*
* local physical line
*
PLIN PHY18,CSMA,X’1800’,0
LCLSAP LMAC18,,X’080038363E18’
The DPS7 node ‘B7DL’
COMM
COMM
SYS
‘Sample DPS7 config (extract)’
‘B7DL DPS7000 local definitions’
NAME=B7DL PF=LSYS SCID=1:4 ISL1=(08-00-38-01-77-77 EA01 CB01 )
TCPIP=1 OBJLIST;
COMM
RSYS
RSC
NR
RPL
RCT
RTS
TP
‘MicroFEP’;
B7DM PF=’CNP7/CNS7/A2’ RSC=B7DM RCT=RCT_B7DM;
B7DM SCID=1:10 SVR=TNS RTS=RTS_B7DM;
NR_B7DM CP=CP_EA01 RPL=RPL_B7DM TP=TP_B7DM;
RPL_B7DM IADDR=08-00-38-33-00-02 CB=CB01 RCT=RCT_B7DM;
RCT_B7DM;
RTS_B7DM NR=NR_B7DM;
TP_B7DM;
COMM ‘G&R Host Links node GRDL, access over ISL’
SYS
NAME=GRDL PF=’STID/ISO/SID4’ SCID=54:60 ISL1=(02-60-8C-20-04-41 CB01)
OBJLIST;
COMM ‘DPS6 system B6DT, access over MicroFEP’
RSYS
NAME=B6DT,PROFILE=’DPS6/DSS/3.1’,RSC=B6DT;
RSC
NAME=B6DT,SCID=1:5,SERVER=TNS,PROTOCOL=DSA200,RTS=RTS_B7DM;
The DPS9000 node ‘B8DF’
osi.cfg:
#
# Sample FCP8 config (osi.cfg) for B8DF, direct FDDI access to G&R DSA node
#
stack i_noerrflag esis
tcivmo name=ivmo_fddi tpdusize=4096 maxrcrdt=7 maxretry=6
#
# G&R node ‘GRIL’ (Escala box)
#
nrsc name=gril nrts=grilts proto=dsa
nrts name=grilts type=diws ivmo=ivmo_fddi macadr=10005ab83588
100
Gline Line Handlers and Configuration
G&R
routes.wdf:
#
# Local session control for ‘B8DF, channel fe4 (in routes.wdf)
#
create_node_route_list gril -nrl fe4
loadscen:
#
# FCP8 MAC (LLC) Ethernet address (in loadscen file)
#
sti W3NX00T20010
macadr 080038101054
The Datanet node ‘DN01’
&***********************************************************
& G&R Host Links DSA node ‘GRDW’. WAN access
&***********************************************************
SC GRDW RMT
-SR GRDW -ADDR 54:58 -NAT DSA
SR GRDW ISO
-TS GRDW
TS GRDW DIWS -NR GRDW -CLASS 2 -CRRE 15 -FEN 13 &
-TPDU 512 -NSDU 512 -RTRY 3 -T1 40 -T2 600
NR GRDW SW
-RMT GRDW -NS DPAK
NS GRDW RMT
-CALL 130366
&***********************************************************
& G&R Host Links DIWS node ‘GRIW’. WAN access
&***********************************************************
SC GRIW RMT
-SR GRIW -ADDR 54:59 -NAT ISO
SR GRIW ISO
-TS GRIW
TS GRIW DIWS -NR GRIW -CLASS 2 -CRRE 15 -FEN 13 &
-TPDU 512 -NSDU 512 -RTRY 3 -T1 40 -T2 600
NR GRIW SW
-RMT GRIW -NS DPAK
NS GRIW RMT
-CALL 130367
&**********************************************************
&
G&R host Links DSA node ‘GRDL’. LAN access
& (GRDL here configured using 2 different names (TSAPs)
&
but using the same ‘route’)
&**********************************************************
SC GRDL RMT
-SR GRDL -ADDR 54:60 -NAT DSA
SC GRD2 RMT
-SR GRD2 -ADDR 54:70 -NAT DSA
SR GRDL ISO
-TS GRDL
SR GRD2 ISO
-TS GRDL
TS GRDL DIWS -NR GRDL -CLASS 4 -CRRE 15 -FEN 13 &
-TPDU 1024 -NSDU 1024 -RTRY 5 -T1 400 -T2 1600
NR GRDL LAN1 -PL GRDL
PL GRDL CSM1 -ETHAD 02608c200441 -CB ELA1
&***************************************************
& DPS9000 TSS with channel access
&***************************************************
SC B8DT RMT
-ADDR 1:1 -SR B8DT -NAT DSA -DFLT -BRK ATPGLT
SR B8DT L66G -CH B8DT
CH B8DT L66G -LNNB 300 -CT DIA1 -T1 0 -ICML 750
CT DIA1 DIA
-PHAD X’0800’
&***************************************************
& DPS9000 CXI with channel access
&***************************************************
Gline Line Handlers and Configuration
101
G&R
SC B8DC RMT
SR B8DC CXI
CH B8DC CXI
-ADDR 1:2 -SR CXIA
-CH B8DC
-CT DIA1 -T1 6000 -T2 2400 -CNX 1000
&***************************************************
& DPS7000 with channel access
&***************************************************
SC B7DC RMT
-ADDR 1:3 -BRK AT -SR B7DC
SR B7DC GC64 -CH B7DC
CH B7DC GC64 -T3 3000 -RCH 8 -CNX 200 -CT PSI1
CT PSI1 PSI
-PHAD X’0C00’ -MXCH 16
&***************************************************
& Local LAN connection
&***************************************************
CB ELA1 LAN1 -PL ELAN
PL ELAN CSMA -CT ELAN -MXSZ 1518 -PHAD X’8000’ -ETHAD 080038200557
CT ELAN ELNC -PHAD X’8000’
&***************************************************
& Local X.25
&**************************************************
NS DPAK X25
-CALL 130399 -NBVC 1034 -LL DPAK -NTW TELENET
LL DPAK BDL
-PL DPAK -LAPB -FRL 133 -T1 100 -W 7
PL DPAK HDLC -PHAD X’1600’ -PHTP 2140 -CT MLC2 -SPD 9600
The DPS7 node ‘B7DC’
COMM
LSYS
LSC
‘B7DC DPS7 local definitions’
NAME=B7DC,PROFILE=’DPS7/GCOS-7/V3’,LSC=B7DC;
NAME=B7DC,SCID=1:3;
COMM
COMM
RSYS
RSC
‘Remote systems’
‘G&R - Host Links GRDW, DSA node’;
NAME=GRDW,PROFILE=’STID/ISO/SID3’,RSC=GRDW;
NAME=GRDW, ADDR=DSA, SCID=54:58,SERVER=DTN1;
COMM
RSYS
RSC
‘G&R - Host Links GRIW, DIWS node’;
NAME=GRIW,PROFILE=’STID/ISO/SID4’,RSC=GRIW;
NAME=GRIW, ADDR=DSA, SCID=54:59,SERVER=DTN1,PRTC=SID;
The DPS7 node ‘B7DF’
COMM
‘Sample DPS7 with FCP7 access’
SYS
NAME=B7DF,PF=LSYS,SCID=01:08,NCC1=(08-00-38-10-0F-77,EA01);
COMM
‘Host Links node GRIL, DIWS type’;
RSYS
RSC
NAME=GRIL,PF=’STID/ISO/SID3’,RSC = GRIL;
NAME=GRIL,ADDR=DSA,SCID=54:061,SVR=NCC1, PRTC=SID;
The corresponding FCP7 configuration file:
STACK TSNAME=NCC1
TCIVMO NAME=IVMO2 TPUSIZE=1024 MAXRCRDT=7 MAXSCRDT=7 MAXRETRY=3
T1TIME=10000 WTIME=60000 ITIME=180000 ACKTIME=4000
NRSC NAME=GRIL NRTS=GRIL
NRTS NAME=GRIL TYPE=DIWS MACADR=08005a1dac11 IVMO=IVMO2
102
Gline Line Handlers and Configuration
G&R
A shared dsa.cfg for all the Host Links nodes
In some situations it makes sense to build and maintain one dsa.cfg file for
all the Host Links nodes in the network. If two or more Host Links
systems share a dsa.cfg file in a shared file system you must use the
-UNAME directive to assign parameter values to the correct Host Links system.
The -UNAME parameter can also be useful if you prefer to maintain a single
copy of the dsa.cfg file and simply distribute it to all Host Links systems
when it has been modified. The –UNAME parameter refers to the UNIX or
Windows server system’s communications node name. NB! It is not the DSA
node name. This name can be displayed using the command uname –n on
UNIX/Linux systems, and displayed in the Network section of the control panel
on Windows server systems.
Windows Server
UNIX/Linux
\gar\config\dsa.cfg
/usr/gar/config/dsa.cfg
#
# Shared dsa.cfg file for all Host Links systems in the example
#
#
#
#
Host Links system (local definitions)
#
sc
tp
tp
DSA Node GRIL, communications node name ‘Tor’,
gril -uname Tor
lan -uname Tor -attach 02608c2d8023
fddi -uname Tor -attach 10005ab83588
DIWS node
# DSA Node GRIW, communications node name ‘Hugin’, DIWS node
sc griw -uname Hugin
tp wan -uname Hugin -attach 130367
#
sc
tp
tp
DSA Node GRDL, communications node name ‘Munin’, DSA node
grdl -addr 54:60 -uname Munin
lan -uname Munin -attach 02608c200441
wan -uname Munin -attach 130355
# DSA Node GRDW, communications node name ‘Sleipner’, DSA node
sc grdw -addr 54:58 -uname Sleipner
tp wan -uname Sleipner
#
#
#
Remote system (WAN access)
# The Dps6 system (SNM)
rsc b6dl -ts b6dl_wan
ts b6dl_wan -class 2 -ns 130405 -tp wan
# The Dps7 system, accessed over X25 in DN01
rsc b7dc -addr 1:3 -ts dn01_wan
Gline Line Handlers and Configuration
103
G&R
# The Dps8 system (DNET/ROUT and CXI), accessed over X25 in DN01
rsc b8dt -addr 1:1 -ts dn01_wan
rsc b8dc -ts dn01_wan
# The DN, used for WAN access to Dps7 and Dps8
ts dn01_wan -class 2 -ns 130399 -tp wan
# Host Links systems
rsc grdw -addr 54:58 -ts grdw_wan
ts grdw_wan -class 2 -ns 130366 -tp wan
rsc griw -ts griw_wan
ts griw_wan -class 2 -ns 130367 -tp wan
# Remote systems accessed over LAN
# Various G&R Host Links systems
rsc grdl -addr 54:60 -ts grdl_lan
ts grdl_lan -class 4 -ns 02608c200441 -tp lan
rsc gril -ts gril_lan
ts gril_lan -class 4 -ns 02608c2d8023 -tp lan
# A DPS6 system, Session control addresses for SNM, TPI and DSA
rsc b6dl -ts b6dl_lan
rsc b6dt -ts b6dl_lan
rsc b6dd -ts b6dl_lan
ts b6dl_lan -class 4 -ns 080038363E18 -tp lan
# A DPS7 system, B7DL, over ISL
rsc b7dl -addr 1:4 -ts b7dl_lan
ts b7dl_lan -class 4 -ns 080038017777 -tp lan
# A DPS8 system, B8DF, direct FDDI access to FCP8
rsc b8df -addr 1:9 -ts b8df_fddi
ts b8df_fddi -class 4 -ns 10001c08082a -tp fddi
# Coname ‘b8dcacce’ used for B8DC access, pooled mailbox extensions
coname b8dcacce -desc “Pool for B8DC access” -pool lidpool
-dn b8dc -da tp88 -hm cxi -tm vip7804
pool lidpool
•
-dx lid1
•
-dx lid2
•
-dx lid3
•
-dx lid4
•
-dx lid5
•
-dx lid6
•
-dx lidt
# Coname ‘obsprt’ referenced by -pco parameter for incoming print
coname obsprt -desc “Print from TDS”
-ln -tm ttu8126 -mn mbx1
104
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Appendix: Host Links
Manuals
Below you find a complete list of all available Host Links manuals:
Installation
Host Links
Installation and Configuration on UNIX/Linux
Host Links
Installation and Configuration on Windows
Line handling
Gline
Line Handler and DSA/OSI Configuration
Ggate
Transparent Gateway
Gproxy
Network Manager & SNMP Proxy Agent
G&R SSL
Using SSL for security in G&R products
GlAPI
Application Programming Interfaces
Emulations
Gspool
Network Printer Emulation
GUFT
Unified File Transfer
G3270
Emulating IBM 3270 Terminals
G5250
Emulating IBM 5250 Terminals
Pthru
Gateway to the Bull Primary Network
Qsim
Emulating Questar DKU7107-7211 & VIP7700-7760
V78sim
Emulating VIP7801 & VIP7814
Gweb
Web Browser Front-end for DKU, VIP7700-7760,
VIP7800, IBM3270 and IBM5250 Emulations
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108
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Appendix: DSA test utilities
The Gline package includes a set of Gline communication utilities. These are
used when testing and debugging connection problems. The utilities are delivered as part of the Gline package and can be used without any additional configuration. The nodes to be tested must of course be configured in the dsa.cfg
file.
Gerror
Show the text message associated with a DSA reason code. Only the most
common codes are supported i.e. the ones related to network, transport and session communication layers. Errors generated by the OSI-stack on the Host Links
platform are not covered by this utility; please refer to the documentation from
the vendor of the stack.
Example:
gerror 0109
Reporting component: Session control (01) 0109, Dialog
protocol error or negotiation failed (wrong logical
record).
For a detailed description of all reason codes, please consult the Bull manual
OSI/DSA Network System Messages and Return codes (39A2 26DM).
Glnode
List and verify the communications parameters of the local node.
Example:
glnode
Local node name : GRDL
Local session control id : GRDL
DSA200 address (area:tsm): 54:60 (36:3C)
Gline Line Handlers and Configuration
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G&R
Gmacfix
When connecting to the FCP cards on the Bull mainframes via an Ethernet port
on the LAN-Extender the address on the host side is given in the Ethernet (LLC)
format. If you connect to an FDDI adapter directly or by an FDDI port of a LAN
Extender, you must convert the MAC address to SMT. This utility can be used
to convert the address format. Typically Bull LLC MAC addresses start with
080038 and the FDDI address starts with 10001C.
Example:
gmacfix 080038000fab
MAC address 080038000fab = 10001c00f0d5
Gping
Connects to a remote system using the Gline parameters set on the command
line. If successful it returns ‘connected to application’, otherwise it shows the
error code returned.
Example:
gping -li dsa -dn b7dl -da iof -du jim -pw mydogsname
Gping - $$DSA: Connected to application
Grnode
Return the configured parameters (in dsa.cfg) and the state of a remote node.
Example:
grnode b6dl
Checking ‘dsa.cfg’ for node ‘b6dl’
Session control id : B6DL
DSA200 address (area:tsm) : 1:5 (1:5)
Inactivity interval : 0
Route 0
Load balance percentage : 0
TP class : 2
TP expedited : 0
TPDU size : 0
Network address : 130405
110
Gline Line Handlers and Configuration
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Gtrace
Same as gping but writes the DSA/DIWS communication trace on the user’s
terminal (applicable to UNIX versions)
Example:
gtrace -li dsa -dn ln40 -da snm151
D6:Application event @ 14:17:17.6003. tokenitem = 00
D6:Application event @ 14:17:17.6082. tokenitem = 00
D6:Connect request called, node = LN40
D6:OurBufferSizes. ApplMaxXmit = 511, ApplMaxRecv = 500
Rec:4000 0002 s:2
Rec:506B 0010 s:16
etc etc
Gtrace - line trace ending.
Gtrace - $$DSA: Connected to application.
Gtsupd
Update the state of a transport route. Transport routes can be set automatically in
a disabled state if a backup route is configured. When such a state change occurs
the route will be set back to the enabled state after a configurable timer has
expired. The default is 15 minutes. You can reset the state of such a route with
the gtsupd utility.
Example:
gtsupd hipp -st enbl
TS-entry ‘hipp’ updated OK. Old state = LOCK, new state =
ENBL
Gline Line Handlers and Configuration
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112
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Appendix: Error Codes
OSI/DSA error codes
Below is a list of OSI/DSA error codes and the corresponding description.
These are the same descriptions that the G&R/Gerror utility will display
when given the DSA code as a parameter.
code Description
00xx General Errors
0001
0002
0003
0004
0005
0006
0007
0008
0009
000A
000B
000C
000D
000E
000F
0010
0011
0012
Open Failure in LC - Reject for unknown reason
Open Failure in LC - Acceptor customer node inoperable
Open Failure in LC - Acceptor customer node saturated.
Open Failure in LC - Acceptor mailbox unknown.
Open Failure in LC - Acceptor mailbox inoperable.
Open Failure in LC - Acceptor mailbox saturated.
Open Failure in LC - Acceptor application program saturated
Connection refused. Transport protocol error or negotiation failed.
Open Failure in LC - Dialog protocol error or negotiation failed
Open Failure in LC - Presentation protocol error or negotiation failed
Open Failure in LC / Connection refused lack of system resources
Open Failure in LC / Connection refused from GCOS7 duplicate
user
Open Failure in LC, Duplicate implicit LID / Q class not started
Open Failure in LC, Duplicate GRTS Id / lack of memory resources
Open Failure in LC, No Logical line declared for DACQ / 7
connection refused
Open Failure in LC, GCOS 8 GW Missing translation / Incorrect
device length in ILCRL.
Open Failure in LC, DAC connection not initialized / Too many jobs
executing
Open Failure in LC, No binary transfer / impossible to start the IOF
job
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G&R
0013
0014
0016
0017
0018
0019
001A
001B
001C
001D
001F
0020
0021
0022
0023
0024
0030
0031
0033
0039
003C
003E
003F
0040
0041
0042
0044
0045
0047
004F
0050
0051
0052
0053
0054
0055
114
Open Failure in LC, connection is not negotiated in FD mode /
impossible to start the IOF job
Disconnection - Timeout resulting from absence of traffic.
Option missing for an RBF mailbox.
Connection refused - Incorrect access right for MB.
Connection refused - Incorrect access rights for the application.
Connection refused - Unknown pre-negotiated message path
Connection refused - Security validation failed.
Connection refused - Unknown acceptor mailbox extension.
Connection refused - Inoperable acceptor mailbox extension.
Connection refused - Invalid Message group number.
Disconnection - no more memory space.
Connection refused - Unknown node.
Connection refused - inaccessible node or Host down.
Connection refused - saturated site.
Connection refused - inoperable mailbox.
(X.25) Packet too long. Problem with packet size. / Connection
block already used.
Syntax Error - option not known (received on close VC).
(X.25) No response to call request packet - timer expired.
(X.25) Timer expired for reset or clear indication.
Disconnection - transport protocol error (MUX).
Presentation Control Protocol Error
The application has not the turn
Message group closed
(X.25) Facility code not allowed. / Connection refused - unknown
node
Connection refused - path not available.
Connection refused - Duplicate USER ID / Facility parameter not
allowed
(X.25) Invalid calling address.
(X.25) Invalid facility length.
(X.25) No logical channel available.
DNSC: (X.25) Invalid call packet length.
Normal disconnection (GCOS3/8)
Error or Event on LC initiated by GW
Error or Event on LC initiated by GW.
Error or Event on LC initiated by GW. TCall
Error or Event on LC initiated by GW. DIA in LOCK State
Error or Event on LC initiated by GW. DIA error
Gline Line Handlers and Configuration
G&R
0056
0057
0058
0059
005A
005B
005C
005D
005E
005F
0060
0061
0062
0064
0065
0066
0067
0068
0069
006A
006B
006C
006D
0078
0079
007F
0081
0082
0083
0085
0086
Error or Event on LC initiated by GW. GW has no known
explanation.
Error or Event on LC initiated by GW. Reject mailbox permanent
Error or Event on LC initiated by GW. No more input lines in
DACQ
Time-out on GCOS 3/8 gateway.
Error or Event on LC initiated by GW. Disconnect from terminal
without reason
Error or Event on LC initiated by GW. Wrong letter or wrong record
Error or Event on LC initiated by GW. Forbidden letter received
Error or Event on LC initiated by GW. Forbidden letter received
Error or Event on LC initiated by GW. No buffer for secondary letter
Error or Event on LC initiated by GW. No buffer for fragmented
letter
Error or Event on LC initiated by GW. Disconnect on end of phase
record
Error or event on LC initiated by GW. No buffer for control letter.
Error or event on LC initiated by GW. Mailbox in closing phase
Error or event on LC initiated by GW. Flow control error.
Error or event on LC initiated by GW. CH locked by operator.
Error or event on LC initiated by GW. Disconnect with a normal
TMG F2 exchange.
Error or event on LC initiated by GW. Teletel rerouting error from
DACQ
Error or event on LC initiated by GW. Teletel routing error from
DACQ
Error or event on LC initiated by GW. Teletel rerouting error from
TM
Error or event on LC initiated by GW. Teletel rerouting error from
TM
Syntax error - text too long.
Syntax error - illegal object in a GA command.
Syntax error - unknown node Id.
Syntax error - illegal command for this object.
Syntax error - illegal date.
(X.25) No route available for X.25 switching.
No more network routes available for switching.
(X.25) Hop count reached for X.25 switching.
(X.25) Flow control negotiation error.
(X.25) Frame level disconnection.
(X.25) Frame level connection.
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G&R
0087
0090
0092
0093
0094
0096
009C
009D
009E
009F
00B2
00B6
00C0
00D7
00DE
00E1
00E6
(X.25) Frame level reset.
Frame level not set.
(X.25) X.25 Echo service in use.
(X.25) Incorrect password for PAD connection.
(X.25) No more PAD connections allowed.
(X.25) TS SX25 or NU X25 objects locked.
(X.25) Invalid packet header. X.25 protocol error.
(X.25) Incompatible header. X.25 protocol error.
(X.25) Logical Channel Number too high.
(X.25) Incorrect packet type.
Use of invalid password through PAD
Unknown mailbox selection for PAD connection using the PAD
password.
(X.25) Normal disconnection.
(X.25) TS image (of type DSA or DIWS) in LOCK state.
(X.25) NS RMT or NR SW in LOCK state.
Connection refused. Mailbox is not in ENBL state.
QOS not available permanently.
01xx Session Control
0100
0101
0102
0103
0104
0105
0106
0107
0108
0109
010A
010B
010C
010D
010E
010F
0110
0111
0112
0113
0115
116
Logical connection accepted or normal termination
Rejection for unknown reason or abnormal termination
Acceptor node inoperable.
Acceptor node saturated. When a node has no available resources
Acceptor mailbox unknown.
Acceptor mailbox inoperable.
DNS: Acceptor mailbox saturated.
DNS: Acceptor application program saturated.
Transport protocol error or negotiation failed (DSA 200 only).
Dialog protocol error or negotiation failed. (Wrong logical record).
Time-out on session initiation / unknown LID
Acceptor mailbox extension unknown.
Acceptor mailbox extension inoperable.
Invalid Session Number.
Unknown node.
System error. System generation error or insufficient memory space
Application abnormal termination. Subsequent to an abnormal
occurrence in the dialogue
Normal terminate rejected.
Protocol not supported.
Session control service purged by user.
Disconnection Time-out on message group initiation.
Gline Line Handlers and Configuration
G&R
0117
0118
0119
011A
011E
011F
0120
0121
0122
0123
0124
0125
0126
0127
0128
0129
012B
012C
012D
012E
012F
0130
0131
0132
0133
0134
013C
013E
013F
0140
0151
0152
0153
0154
0156
0157
0158
0159
015A
Incorrect Access Right for MB
Incorrect Access Right for the Application
Pre-negotiated Message Path Descriptor unknown
Security validation failed
Incorrect object status
Not enough memory space available.
Node unknown.
The channel object (CH) is in LOCK state
Saturation - no plug available
Object status = LOCK
Connection block (TSCNX) already used
Disconnection already running
The connection block (TSCNX) is disconnected (or not connected)
Change Credit value < 0
Ineffective Change Credit ( delta = 0 )
No more deferred letters
"Reinitialization" Request
"Reinitialization" in progress
"Reinitialization" in progress, letters are dropped
Close virtual circuit. Either no mapping exists between PA/NR or
CL and VC/NS
Null connection object index.
Undefined function at Sysgen time.
Letter too large with respect to the negotiated size.
The received letter is longer than the size which was
Disconnection of the session control user
Interface error on EOR (End-Of-Record) processing.
Presentation control protocol error.
You do not have the turn.
Message group closed.
Session is closed.
Request refused, no system buffers available.
Incorrect addressing record.
No presentation record in the ILCAL or ILCRL
Negotiation failed on session mode
Negotiation failed on resynchronization.
Negotiation failed on END to END ACK
No presentation record in the connection letter
Negotiation failed on session mode
Negotiation failed on letter size (in the Logical Connection record).
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015B
015C
015D
0160
0161
0162
0163
0164
0165
0166
0167
0168
0169
016A
016B
016C
016D
016E
016F
0170
0171
0172
0173
0174
0175
0176
0177
0178
0179
017A
017B
017C
017D
017E
017F
0180
0181
0182
0190
118
Negotiation failed on resynchronization (in the Logical Connection
record).
Negotiation failed on end-to-end ACK (Logical Connection record).
No support of the "letter" interface because Multirecord is not
negotiated.
Incorrect TSPACNX table.
Protocol error on letter reception.
Negotiation failure.
Record header length error.
Protocol error.
Protocol error reception of control letter.
Type or length error on interrupt letter.
Protocol error on reception of data letter.
Dialog protocol error.
Unknown event.
Protocol error on data transfer.
Invalid status for a disconnection request.
Invalid status for a recover
Invalid status for a suspend/resume request.
Negotiation failure.
Unknown command.
Error in presentation protocol
Letter header length error in
ILCAL is not DSA 200 protocol.
Error in session record.
Normal disconnection, without complementary reason code.
Letter is not in ASCII or EBCD.
Connection protocol letter header
Letter header protocol error.
Record header protocol error.
Record header length error.
Mbx record header length error.
Error on buffer transfer.
DSA 200 record header protocol
DSA 300 record header protocol
Unsupported connection options.
Character error in ASCII string.
No segmented record size.
Invalid mailbox object index.
Mapping error for a remote connection.
No more buffers.
Gline Line Handlers and Configuration
G&R
0191
0192
0193
0194
0195
0196
0197
0198
0199
019A
019B
019C
019D
019E
019F
01A0
01A1
01A2
01A3
01A4
01A5
01A6
01A7
01A8
01A9
01AA
01AB
01AC
01C0
01C1
01C2
01C3
01E0
01E1
01E2
01E3
01E4
01E8
01E9
Byte count is greater than GP.
Byte count is greater than GP.
Byte count is greater than GP.
Byte count is greater than GP.
Byte count is greater than GP.
Byte count is greater than GP.
Byte count is greater than GP.
No more buffers.
Byte count is greater than GP.
Byte count is greater than GP.
Byte count is greater than GP.
Byte count is greater than GP.
Byte count is greater than GP.
Byte count is greater than GP.
Byte count is greater than GP.
Invalid transfer state.
Suspend protocol running.
Suspend protocol running.
Recover protocol running.
Forbidden function in write request. ($WRITE)
Conflicting parameters for segmented record. (SWBREC)
Protocol conflict - suspend/recover.
Protocol not supported - letter/end-to-end ACK. (SWBLET)
Multi-record letter in progress.
Interrupt request forbidden.
Send control record request forbidden. (SCTROL)
Forbidden for TWA session - turn is here. (SREAD)
Termination forbidden - suspend or recover in progress. (STERM)
No space available for downstream connection request. (SMECNX)
No space available for upstream connection request. (SMUCNX)
No space available for upstream SCF connection. (SMRCNX)
No space available for session context. ($SCTX)
Enclosure or data length error for a write request. ($WRITE)
Enclosure or data length error for a write segment record request.
(SWBREC)
Enclosure error for 'give turn' request. (SGVTRN)
Interrupt request is not demand turn, attention/data attention, or
purge record.
Input status for a send control letter is not permitted.
Write request without turn.
Write segmented record request without turn.
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G&R
01EA
01EB
01EC
Write segmented letter request without turn.
Send control letter request without turn.
Disconnection request without turn.
02xx Presentation Control
0201
0202
0203
0204
0205
0206
0207
0230
0231
0232
0233
0234
0235
0236
0237
Protocol level not supported
Application designation protocol error.
Character encoding error. TM cannot support the proposed encoding.
Character set error. TM cannot support the proposed character set.
Character subset error. TM cannot support the proposed character
subset.
Incorrect record encoding.
Incorrect parameter encoding.
Data presentation control error. The presentation control proposed
for this session cannot be used
Device type is incompatible with the configuration.
TM control protocol is incorrect.
Device-sharing attributes are invalid.
Initiator or acceptor configuration is not correct.
Logical device index error.
Number of logical devices is incompatible with the configuration.
TM protocol record not supported.
03xx Terminal Management
0300
0301
0302
0303
0304
0305
0306
0307
030A
0310
031E
0320
0321
0322
120
Sysgen error WARNING. There is no mapped object; some objects
will be spare.
Operator requested session abort or logged.
Idle time run out after secondary network failure.
Idle time run out for no traffic.
Form not found.
Operator requested suspension.
Destructive attention send on the session.
Unknown TX addressed in this session. TM is unable to a the
session.
Protocol error. A record was received which did not comply with
current standards
Insufficient resources. The receiver cannot act on the request
because of a temporary
Incorrect value for Retry or Wait parameters on UP LL command.
Function not supported.
Parameter error. This can result
Resource not available. The
Gline Line Handlers and Configuration
G&R
0323
0324
0325
0326
0327
0328
0329
032A
032B
032C
032D
032E
0330
0331
0332
0340
0341
0342
0343
0344
0345
0346
0347
0348
0349
034A
0350
0360
0361
0362
0370
0371
0372
0373
0374
0375
0376
0380
0381
0382
Intervention required (on principal device).
Request not executable.
EOI required.
Presentation space altered, request executed.
Presentation space altered, request not executed.
Presentation space integrity lost.
Device busy. The device is busy and cannot execute the request.
Device disconnected.
Resource not configured.
Symbol set not loaded.
Read partition state error.
Page overflow.
Subsidiary device temporarily not available.
Intervention required at subsidiary device.
Request not executable because of subsidiary device.
TM cannot accept a new connection.
Object status incorrect.
The TM configuration is not correct.
Unknown TX addressed on this session.
Data presentation protocol error.
Device type is incompatible with the configuration, or is not
supported.
TM control protocol incorrect.
Device shareability attributes are invalid.
Initiator or acceptor configuration is not correct.
Logical device index error.
Number of logical devices incompatible with the configuration.
Disconnection of TM after reinitialization of the network.
File not found. (Welcome and Broadcast Messages)
Site not found. (Welcome and Broadcast Messages)
NASF error. (Welcome and Broadcast Messages)
No-session timeout. Device disconnected.
No-input timeout. Device disconnected.
No-output timeout. Device disconnected.
Timeout due to no backup session being initiated.
Timeout due to no backup session being established.
Connection refused because of late activation of back up session.
Disconnection of current session to switch to backup session.
AUTOCN parameter not declared.
Mixed ETB in data sent by VIP screen and cassette
Data header sent by the terminal incorrect.
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121
G&R
0383
0384
038C
0390
0391
0392
03C0
Desynchronization in the exchange of data.
KDS block count error.
Remote terminal is not connected
Unknown mailbox.
No call packet to return.
No "Possibility" command to return Protocol error
Slave device disconnection.
17xx Network Layer
1701
1702
1706
1707
1708
1709
1710
1711
1712
1713
1714
1717
1718
1719
171A
171B
171C
171E
171F
1721
1723
1724
1725
1726
1727
1729
1731
1732
1733
1740
122
PAD connection refused.
Flow control error.
Logical channel number not zero in restart packet.
Illegal packet length or use of D-bit forbidden.
Illegal header.
Illegal Logical Channel Number.
Invalid packet type for the automaton state. Protocol error
Incorrect packet type.
Inconsistent network parameters in the generation file.
No more space.
DSAC network layer object not usable.
USED/ENBL transition. Transport station is locked.
USED/ENBL transition. This is a back-up NR.
USED/ENBL transition. Dynamic close due to load.
USED/ENBL transition. Transfer time-out has elapsed.
USED/ENBL transition. This is a back-up NR.
USED/ENBL transition. Transport station is idle.
USED/ENBL transition. NR object is locked.
ENBL/LOCK transition. NR HDLC has no more memory space.
Remote station is inaccessible via the configured network. Check
Incorrect PAD password.
Virtual circuit already in use. LCN (Logical Channel Number) too
high.
Invalid virtual circuit.
Packet too short. Protocol error for the equipment directly connected
to the Bull Datanet.
Incompatibility between the generation parameters of two
communicating systems on window or packet size.
Packet size in communicating systems not the same.
Timer runs out while waiting for call confirmation.
Timer runs out while waiting for clear confirmation.
Timer has run out while waiting a reset confirm.
Call setup or call clearing problem.
Gline Line Handlers and Configuration
G&R
1741
1742
1744
1745
1747
1749
174F
1755
1760
1770
1771
1781
1782
1783
1785
1786
1787
1790
1791
1792
1793
1794
1795
179B
179D
179E
179F
17A0
17B0
17B1
17B2
17B3
17B4
17B5
17B6
17B8
17B9
17CB
Open failure on virtual circuit. No flow control on this NS.
Incorrect facility. Protocol error for the equipment directly
connected to the Bull Datanet.
Unknown subscriber.
End of time-out on reset confirm. Invalid facility length. Protocol
error for the equipment directly
No logical channel available.
End of time-out on call confirm.
Incorrect packet length. Protocol error for the equipment directly
connected to the Bull Datanet.
Flow control, window, packet size or reset error.
Frame disconnection.
Frame connection.
Frame reset.
No more network routes available for X.25 switching.
Maximum of 15 switches have been used,
Flow control negotiation error.
Frame level disconnection.
Frame level connection.
Frame level reset.
Frame level not established.
No more logical paths available for the PAD.
Echo service busy.
Incorrect PAD password.
All the PAD virtual circuits are used
X.25 initialization not possible.
LCN not null in restart packet
Incompatible header (receive error: all VC of concerned NS
LCN greater than NBVC in NS directive
Incorrect packet type
Invalid facility.
Normal disconnection.
X.25 Echo in use.
No more logical channels available.
No more PAD connections allowed.
TS SX25 or NU X25 object locked.
Buffer capacity overflow.
Normal disconnection.
Unknown calling SNPA (Sub-Network Point of Attachment).
Internet problem.
Call collision on VC
Gline Line Handlers and Configuration
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G&R
17CC
17CE
17CF
17D0
17D4
17D7
17DD
17DE
17DF
17E0
17E1
17E2
17E3
17E4
17E5
17E6
17E7
17E9
17EB
17EE
17FF
Incompatible generations (NR object without mapping).
Invalid status NR locked.
Lack of space.
Unknown subscriber.
TSCNX already used for another connection. SCF internal error.
Transport station locked.
Proper NS locked.
Invalid status NR locked.
Lack of space.
Forbidden parameter or invalid value.
Invalid transition.
Upward-mapped object (TS) not locked.
No object mapped above.
NR not locked (MP NR -ADD/-SUB) or virtual circuit already open.
NR is last in list and the TS is not locked.
No object mapped above (UP NR -PRIO). NR not mapped on TS.
Upward mapped object not locked
Mix of datagram and connection network
Class inconsistent with NR.
Incompatible generations. NR object without mapping.
Wrong parameter in administrative CALL
18xx Transport Layer
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
180A
180B
180C
1817
181F
1821
124
Normal disconnection initiated by the correspondent
Local saturation at connection request time.
Failed negotiation at connection time.
Duplicate connection. Two or more requests have been issued for the
same connection.
Redundant request.
Retransmission Time-out at transport level.
Survey time-out at transport level.
Transport protocol error.
Session Control specified is not available (inaccessible).
Requested Session Control Id unknown by remote transport.
Termination because of disconnection by administration.
Session Control/Transport interface error.
Connection request on non-sharable VC in case of ISO Transport.
ISO: header or parameter length is invalid.
Station in shut-down state.
No memory space at connection time.
Session Control inaccessible by configured session routes. ISO:
Session entity not attached to TSAP.
Gline Line Handlers and Configuration
G&R
1824
182E
182F
1831
1832
1833
1834
1835
183A
183C
1840
18A1
18B0
18EF
Collision between Close NC and Open TC.
Remote station not configured.
Resource saturation.
ISO: No route for the called NSAP.
ISO: Received NSAP addresses are wrong.
Segmentation violation.
ISO:QOS priority not available temporarily, due to a local condition
(for example, lack of resources).
ISO:QOS priority permanently unavailable locally (for example, due
to an error in the system generation).
ISO: Remote reason not specified.
ISO: Remote transport entity congestion at connect request time.
Server in terminating state. TC has been re-assigned on another NC.
An additional NC has been assigned to a TC.
NC has been re-assigned on another VC.
Disconnection at Transport level caused by reception of RESTART
DSA during the transfer phase.
Windows Sockets error Codes
Below is a list of Windows Sockets return codes and the corresponding
description.
Hex
code
2714
Windows Sockets Access
Error name
WSAEINTR
2719
271E
WSAEBADF
WSAEFAULT
2726
WSAEINVAL
2728
WSAEMFILE
2733
WSAEWOULDBLOCK
2734
WSAEINPROGRESS
Gline Line Handlers and Configuration
Description
The (blocking) call was cancelled
via WSACancelBlockingCall()
The socket descriptor is not valid.
An invalid argument was supplied
to the Windows Sockets API.
An invalid call was made to the
Windows Sockets API.
No more file descriptors are
available.
The socket is marked as nonblocking and no connections are
present to be accepted.
A blocking Windows Sockets call
is in progress.
125
G&R
2735
WSAEALREADY
2736
2737
2738
WSAENOTSOCK
WSAEDESTADDRREQ
WSAEMSGSIZE
2739
WSAEPROTOTYPE
273A
WSAENOPROTOOPT
273B
WSAEPROTONOSUPPORT
273C
WSAESOCKTNOSUPPORT
273D
WSAEOPNOTSUPP
273E
273F
WSAEPFNOSUPPORT
WSAEAFNOSUPPORT
2740
WSAEADDRINUSE
2741
WSAEADDRNOTAVAIL
2742
WSAENETDOWN
2743
WSAENETUNREACH
2744
WSAENETRESET
2745
2746
2747
WSAECONNABORTED
WSAECONNRESET
WSAENOBUFS
2748
WSAEISCONN
126
The asynchronous routine being
cancelled has already completed.
The descriptor is not a socket.
A destination address is required.
The datagram was too large to fit
into the specified buffer and was
truncated.
The specified protocol is the wrong
type for this socket.
The option is unknown or
unsupported.
The specified protocol is not
supported.
The specified socket type is not
supported in this address family.
The referenced socket is not a type
that supports connection-oriented
service.
The specified address family is not
supported by this protocol.
The specified address is already in
use.
The specified address is not
available from the local machine.
The Windows Sockets
implementation has detected that
the network subsystem has failed.
The network address can't be
reached from this host. There is
probably a problem in the way you
have set up TCP/IP routing for your
PC (most likely you have not
defined a default router).
The connection must be reset
because the Windows Sockets
implementation dropped it.
The connection has been closed.
Not enough buffers available, or
too many connections.
The socket is already connected.
Gline Line Handlers and Configuration
G&R
2749
274A
274B
274C
WSAENOTCONN
WSAESHUTDOWN
WSAETOOMANYREFS
WSAETIMEDOUT
274D
WSAECONNREFUSED
274E
WSAELOOP
274F
2750
2751
2752
2753
2754
2755
2756
2757
276B
WSAENAMETOOLONG
WSAEHOSTDOWN
WSAEHOSTUNREACH
WSAENOTEMPTY
WSAEPROCLIM
WSAEUSERS
WSAEDQUOT
WSAESTALE
WSAEREMOTE
WSASYSNOTREADY
276C
WSAVERNOTSUPPORTED
276D
WSANOTINITIALISED
2AF9
WSAHOST_NOT_FOUND
2AFA
WSATRY_AGAIN
2AFB
WSANO_RECOVERY
2AFC
WSANO_DATA
Gline Line Handlers and Configuration
The socket is not connected.
The socket has been shutdown.
Attempt to connect timed out
without establishing a connection.
The attempt to connect was
forcefully rejected. The service on
the other side is not available.
Too many symbolic links were
encountered in translating the path
name.
The host machine is out of service.
The host machine is unreachable.
Indicates that the underlying
network subsystem is not ready for
network communication.
The version of Windows Sockets
API support requested is not
provided by this particular
Windows Sockets implementation.
A successful WSAStartup() must
occur before using this API.
Authoritative answer host not
found.
Non-authoritative answer host not
found, or SERVERFAIL.
Non-recoverable errors,
FORMERR, REFUSED, NOTIMP.
Valid name, no data record of
requested type.
127