Compatible Systems | RISC Router 4000S | Nautica 4000, Routers

Nautica 4000, Routers
Nautica 4000
Extends Connectivity
Offers Integrated
Backbone Access
Over a Variety of
Ensures Network
Performance and
The Nautica™ 4000 is a remote access
server and router that has been built for
small to midsized business and corporate remote offices supporting telecommuting, Internet access, and remote
access. As your network needs change
and grow, the Nautica 4000 offers a
flexible migration path with its costeffective modular design. Different customers have different requirements and
the Nautica 4000 allows you to create a
configuration mix of analog and digital
dial access and dedicated connections
to meet those requirements.
Protects Investment
Each Nautica 4000 can be equipped
with the following transport options
to connect to a local or remote
backbone network:
Single Integrated Services Digital
Network (ISDN) Basic Rate Interface (BRI) modules with S/T or U
interfaces (maximum of 8).
ISDN Primary Rate Interface (PRI)
modules. This feature is scheduled
to be available mid-calendar year
Serial WAN: X.21,V.24/RS-232,V.35.
This feature is scheduled to be
available mid-calendar year 1998.
Support for integrated modems
(up to 16 total modems).
Frame Relay over high-speed serial
interface port for connections up
to 2.044 Mbps.
Nautica Routing Services
(NauticaRS) software with a comprehensive set of standards-based
Internet Protocol (IP) and Internet
Packet Exchange (IPX) features and
services, dial services, and multiple
data compression algorithms.
The Bay Networks Nautica series is
widely recognized in the industry for
its ease of use. Bay Networks NauticaRS
provides an assortment of tools that
simplify configuration and management
tasks. Additionally, the Nautica Configuration Wizard, a Windows 95 compatible application, enhances the setup
procedure by guiding users through
the configuration of the product. All
functions can be managed locally or
remotely using Simple Network Management Protocol (SNMP), Bay Networks Bay Command Console (BCC™),
and Graphical User Interface (GUI) configuration software. NauticaRS supports
a wide range of standards for compression, bandwidth allocation, and security
to ensure that the remote device has
optimal performance.
Combined with Bay Networks stackable
hubs, switches, and remote access
devices, Nautica 4000 is a cost-effective
and flexible solution for providing
remote office connectivity to the
enterprise network.
Extends Connectivity
The Nautica 4000’s flexible-access
design combines router and dial access
capabilities, providing network connections for multiple analog dial-up,
digital dial-up, and digital leased lines.
Nautica 4000 offers direct online connectivity with Point-to-Point Protocol
(PPP) dial access to internetworks for
clients and remote LANs, as well as
dedicated or dial connectivity into a
WAN backbone or Internet. Bay Networks adherence to standards allows
connectivity and interoperability for
Transmission Control Protocol/IP
(TCP/IP), IPX, and bridged networks
over ISDN, Frame Relay, and leased
lines in multivendor environments.
Offers Integrated Backbone
Access Over a Variety of
The Nautica 4000 gives users a variety
of options for connecting to a local or
remote backbone network. Switches
or backbone routers can be accessed
via an Attachment User Interface (AUI)
or 10BASE-T port at up to 10 Mbps;
a high-speed serial interface that
provides dedicated connections using
Frame Relay or PPP at up to 2.044
Mbps (V.35, X.21); or ISDN BRI with
integrated “S/T” or “U” interfaces to
make connections directly to the carrier. The Nautica 4000 also supports
V.24/RS-232 interfaces, supporting the
attachment of asynchronous devices
such as serially attached modems.
Ensures Network Performance
and Availability
The Nautica 4000 router’s Reduced
Instruction Set Computer (RISC)-based
multiprocessor architecture offers bestin-class performance. High filtering
rates of 14,880 and forwarding performance of 10,000 packets per second
(pps) allow the Nautica 4000 to meet
Data Sheet Nautica 4000
the most demanding throughput
requirements. What’s more, the Nautica
4000’s Dial-on-Demand, Dial- AroundDead Site (DADS), and Bandwidth-onDemand features ensure network availability during periods of dislocation
and high traffic congestion, offering
protection against business disruption
in the event of a discontinuity in the
selected data path. Nautica 4000s can
be configured by a wide array of local
and remote SNMP-based management
platforms, which allow for easy configuration and quick problem resolution.
Each Nautica 4000 can contain 4 to
32 megabytes (MB) Dynamic Random
Access Memory (DRAM) and 1.5 MB
Flash memory. Software image and
configuration files can be downloaded
remotely to the Flash memory,
simplifying upgrades and fault
recovery procedures.
Ethernet The Nautica 4000 routers
has a 10BASE-T (RJ-45) connector and
one AUI connector for a choice of
connectivity. The interface supports
IEEE 802.3 and Version 1.0/2.0
Ethernet frame formats.
Protects Investment
The Nautica 4000’s modular design
provides the performance and network
interfaces for network flexibility and
growth. The Nautica 4000 is compatible with Bay Networks Adapteon™ 5399
remote access concentrator (RAC)
module, Adapteon 8000 RAC, Nautica
200, CLAM™, BayStack™ Access Node
(AN®), BayStack Access Node Hub
(ANH™), Access Stack Node (ASN™),
Backbone Link Node (BLN®), Backbone
Concentrator Node (BCN®), and Marlin™
routers. The Nautica 4000 can interoperate with third-party vendors equipment using PPP, Multilink PPP (MP),
Bandwidth Allocation Control Protocol
(BACP), Hifn data compression, Compression Control Protocol (CCP), and
Microsoft Point-to-Point Compression
Hardware Features
High-Performance Processor
The high-performance, highly flexible
Nautica 4000 routers feature:
MIPS 33000, MC68360, and
MC68302 microprocessors for
I/O interface activity
Filtering rate of 14,880 pps
Forwarding performance that
exceeds 10,000 pps
Synchronous The Synchronous WAN
interface supports clocking rates of up
to 2.044 Mbps. It is available configured with V.11/X.21,V.24/RS-232, or V.35
physical interfaces for support of Frame
Relay or leased line services. The V.24
interface can also connect to an analog
modem for public-switched telephone
network (PSTN) dial-up routing.
Integrated Modems Optional integrated V.34 modems are available with
the Nautica 4000. The modems enable
calls originating on an analog PSTN
service to be terminated by the Nautica
4000. Up to 16 simultaneous connections can be made with two optional
4-port modem modules, and two 4-port
expansion modules.
ISDN Basic Rate Interface (BRI)
The Nautica 4000 provides an integrated, high-performance solution for
companies using dial services with up
to eight ISDN BRI interfaces. Each
interface has two 64 Kbps B-channels
for data and one 16 Kbps D-channel for
signaling. Each ISDN BRI features an
MC68302 microprocessor. The ISDN
BRI connector is a RJ-45.
ISDN Primary Rate Interface (PRI)
The Nautica 4000’s support of ISDN PRI
enables it to connect directly to an
ISDN switched service network. Bay
Networks ISDN PRI complies with all
major international PRI signaling specifications. The European standard provides 30 B-channels plus one D-channel.
The North American standard provides
23 B-channels plus one D-channel.
Software Features
Nautica Routing Services
NauticaRS software enables the Nautica
4000 to maximize connectivity by
supporting standards-based protocol
features and services (see Table 1).
NauticaRS Protocol
NauticaRS software provides a
comprehensive set of standards-based
IP, IPX, Frame Relay, and PPP features
and services.
IP NauticaRS ensures highly-reliable,
standards-based connectivity and interoperability through standard IP functions and support for major Internet
Engineering Task Force (IETF) Request
for Comments (RFCs) for protocols
including IP,TCP, Routing Information
Protocol (RIP),Address Resolution Protocol (ARP), Internet Control Message
Protocol (ICMP), User Datagram Protocol (UDP), Dynamic Host Configuration
Protocol (DHCP), Bootstrap Protocol
(BootP) Relay, Dynamic RIP routing,
and static routes. This range of support
ensures users highly reliable, standardsbased connectivity and interoperability.
The DHCP and BootP Relay Mode in
NauticaRS allow corporations and
service providers increased choice and
flexibility for determining and implementing their IP Address allocation
strategy. DHCP gives a framework for
passing configuration information to
IP hosts connecting to a network, as
defined under RFC1541. BootP Relay
Mode passes IP address requests and
delivers host-specific configuration
parameters from a centrally located
DHCP server to a DHCP client.
The Nautica 4000 can be configured to
function as a local DHCP server for
workstations connected directly to the
local Ethernet segment. A Nautica 4000
functioning as a DHCP server provides
IP addresses dynamically to workstations as they appear on the LAN. This
eases IP configuration and reduces
costs by eliminating the need for workstations to dial up an ISDN session to
get their IP address.
Nautica 4000’s IP implementation
increases network security and reduces
overhead traffic through its IP RIP
Direction Control feature. This feature
controls the flow of broadcast traffic
over the network. Broadcast traffic
generated by IP RIP can be configured
as send only, receive only, both, or
neither on a per-path basis.
IPX The NauticaRS’s IPX implementation supports Link Service Access Point
/Logical Link Control 2 (LSAP/LLC2),
IPX over Ethernet Type II, and Novell
proprietary protocol. RIP routing is
also supported to ensure that the best
path to a destination is used.
The Nautica 4000’s IPX implementation
provides increased network security
and reduced overhead traffic through
the IPX Default Route feature, Service
Access Point (SAP) Direction Control,
and Sequenced Packet Exchange (SPX)
Network Address Translation (NAT)
NAT is a method for translating an
internal IP address or network into a
globally unique IP address. NauticaRS’s
support of NAT simplifies management,
configuration tasks, and saves addresses
by enabling service providers to assign
a Nautica 4000 an IP address without
requiring any reconfiguration of the
network behind the router. NAT can
be used on a Nautica 4000 in the
following three ways:
NAT with a Single PC. This is a single PC connected to a Nautica 4000
that is connected to an Internet
provider. The Nautica 4000 is provided with the IP address by the
remote router. The Nautica 4000
translates between the PC’s IP
address and the supplied IP address.
NAT Many to One. All devices on
the internal network are configured
with internal addresses. The
Nautica 4000 translates between
these addresses and a single
external address.
NAT with Multiple Remote Routers.
Each remote router provides the
Nautica 4000 with a different IP
address. The router translates
between the different addresses
depending on the path used.
Additionally, IP filtering can be used
in conjunction with NAT to prevent
internal users from gaining access
to specified external resources,
enhancing security.
Single IP (SIP) Addressing Support
for this feature provides cost-effective
Internet access by allowing users on a
small LAN to only purchase a single
IP address from their Internet Service
Provider (ISP). SIP addressing support
also simplifies the administration of
remote users because one IP address
pertains to all users.
The Nautica series NAT implementation works in conjunction with SIP
such that all internal IP addresses are
mapped to a single, legal, external IP
address. The Nautica 4000 automatically translates between the internal
and external IP addresses and determines for which particular host the
incoming data is destined.
Data Sheet Nautica 4000
Table 1
Nautica Routing Services for Nautica 4000 Routers
Nautica RS
Nautica RS
Calling Line Identification (CLI)
National ISDN-1 (NI1)
Secure Unit
National ISDN-2 (NI2)
AT&T Point-to-Point
Network Filters
AT&T Multipoint
Port/Socket Filters
ISDN Dialback
Multiple Subscriber Numbering
Remote Authentication Dial-In User
Caller ID
Services (RADIUS) Client
Virtual Private Telephone Network Dialing Codes
Optimization Features
Provisioned B-Channels
SIP Addressing
Circuit Switched Voice/Data-over-Voice-
Dial-on-Demand Routing
Call Forwarding
Extended Call Filtering
Call Waiting
IP RIP Direction Control
IPX RIP and SAP Direction Control
Call Hold/Call Retrieve
Single Host Address Working
Cul-De-Sac Routing
Minimum Call Duration Timer
DHCP Server
Supplemental Telephone Service (U.S., Sweden)
Synchronous Interface Support
External Asynchronous Modem Support using
V.24/RS-232 port
DHCP Client
Link Control Protocol (LCP) Extensions
DHCP/BootP Relay
IP Control Protocol (IPCP)
Point-to-Point Tunneling Protocol (PPTP)
IPX Control Protocol (IPXCP)
Bridge Control Protocol (BCP)
Microsoft Point-to-Point Compression (MPPC)
Bay Networks WAN Compression Protocol
Point-to-Point Protocol (PPP)
(WCP) for PPP
PPP Authentication Protocols (Password
Protocol Spoofing
Authentication Protocol (PAP)/ Challenge
Handshake Authentication Protocol (CHAP))
Routing IP over PPP
Routing IPX over PPP
Bridging over PPP
Spanning Tree Support
Frame Relay
Multiprotocol Interconnect over Frame Relay
Routing IP over Frame Relay
Routing IPX over Frame Relay
802.1D Bridging over Frame Relay
Nautica Configuration Wizard
Trivial File Transfer Protocol (TFTP)
HyperText Markup language (HTML)
Nautica High-level Data link Control (HDLC)
HDLC with Hifn/LZS
802.1D Bridging over HDLC
IP Routing over HDLC
IPX Routing over HDLC
Data Sheet Nautica 4000
DHCP Support Nautica 4000s can
use a standard mechanism for passing
IP address requests and delivering hostspecific configuration parameters from
a centrally located DHCP Server to a
DHCP Client (workstation) connected
to the remote LAN. This capability is
referred to as BootP Relay mode.
PPP and MP Industry-standard PPP
and RFC 1990 — MP are supported
for multivendor interoperability over
ISDN and leased lines. PPP and MP
are enhanced by the Nautica 4000’s
support of PPTP, BCP, and BACP, which
extend connectivity, ensure adequate
bandwidth, and provide security.
A Nautica 4000 can also be configured
to function as a local DHCP server for
workstations directly connected to the
local Ethernet segment. This allows IP
addresses to be dynamically allocated
without an ISDN call being placed to
the central site.
PPTP allows PC users to extend the PPP
connection over a composite path of
LAN and ISDN links. An extension of
PPP, PPTP supports Virtual Private Networks (VPNs) and provides branch
offices and remote/mobile users with
low-cost access to corporate network
resources through an Internet connection. This eliminates long distance
charges as well as management issues
associated with maintaining private networks. BCP allows nonrouted protocols
such as AppleTalk to be bridged over a
PPP link to any other router or bridge
supporting the PPP/BCP standard.
DHCP and BootP support provides
major corporations and service
providers with increased flexibility
when determining and implementing
their IP address allocation strategies.
Dynamic IP Addressing This feature
allows an ISP or corporate IP address
administrator to dynamically allocate an
external IP address to any Nautica
series platform for the duration of its
connection. This is achieved through
the use of PPP and the Internet Protocol Control Protocol (PPP/IPCP), or
DHCP. This automatic address allocation technique can be enhanced, where
required, by using the DHCP server feature to allow the Nautica series access
router to dynamically allocate local
(internal) IP addresses to the hosts,
without activating the ISDN link, as is
required when attached to a local LAN.
Frame Relay NauticaRS integrates
incoming Frame Relay traffic from
Frame Relay access devices such as the
Nautica CLAM, with dial-in traffic to
incorporate networks or the Internet
over public or private Frame Relay
networks. Nautica 4000 routers can
support up to 64 Permanent Virtual
Circuits (PVCs) over a Frame Relay network. NauticaRS supports RFC1490
encapsulation, ensuring multivendor
interoperability over Frame Relay for
IP/IPX routing and transparent bridging.
BACP manages the bandwidth available
during Multilink calls. With BACP, a
platform receiving the call has the ability to negotiate bandwidth with the
platform initiating the call. The negotiation can be based on available
resources or through the dynamic monitoring of the actual traffic across the
link. This solves the problem of insufficient bandwidth, which often occurs
when ISDN links are repeatedly initialized and brought down (thrashing), by
making sure that both ends have
adequate bandwidth for operation.
Data Compression
NauticaRS software enables the Nautica
4000 to increase the amount of data
that can be carried across an ISDN or
leased line. Bay Networks data compression support improves performance
and throughput without compromising
compatibility by using standards-based
techniques. Compression interoperability is available in a wide array of remote
environments, from third-party routers
to Microsoft Windows workstations.
Dial Services
NauticaRS dial-up services ensure
remote office connectivity and availability with features such as Dial-onDemand, Bandwidth-on-Demand, and
Dial Backup. The Nautica 4000 can
accept and make calls to standalone
ISDN access routers with PC-integral
or standalone ISDN Terminal Adapters
over PPP or V.120. When equipped
with integrated modems, the Nautica
4000 can accept dial-up calls from
remote users dialing in with analog
modems. The Nautica 4000 will automatically route incoming analog calls
to an available modem.
Dial-On-Demand The Nautica 4000
routers take full advantage of the speed
and bandwidth of ISDN lines while
maintaining control of call costs with
ISDN Dial-on-Demand. A link is automatically brought up when there
is data to transfer and closes down the
link once traffic has stopped for a
specified amount of time. Sites with
intermittent data transfers can realize
maximum cost savings connections
using this feature.
Bandwidth-on-Demand During
peak usage periods, the NauticaRS
Bandwidth-on-Demand feature gives
additional bandwidth. BACP is the
mechanism used to add or delete links.
Once line usage reaches a predefined
level, the Nautica 4000 will open an
additional B-channel and load balance
across channels. When line usage drops
below the predefined level, the Nautica
4000 closes down one B-channel and
returns to the original bandwidth.
Bandwidth-on-Demand can increase the
synchronous port’s bandwidth by using
ISDN channels during peak traffic periods. It can also add bandwidth to ISDN
B-channels that are already being used.
Data Sheet Nautica 4000
Dial Backup The Nautica 4000 can
use ISDN to back up a dedicated link.
In the event that the dedicated link
goes down, the Nautica 4000 activates
the ISDN connection. When the dedicated link is restored, the Nautica 4000
terminates the backup connection and
resumes use of the dedicated link.
Minimum Call Duration Timer
The Minimum Call Duration Timer is
particularly cost-effective when an ISDN
line is activated frequently for small
data transfers. This feature minimizes
recurring WAN costs by applying a set
minimum call charge period. The ISDN
line will be kept active for the duration
of the minimum call period, allowing
any subsequent data transfers to take
place without clearing and subsequently redialing a second ISDN call.
Configuration and Management
With NauticaRS software, the Nautica
4000 provides many features that
simplify configuration and provide
SNMP-based network management
capabilities. The Nautica 4000 can
be configured and managed from any
local or remote ANSI-standard terminal
or from a PC on the network using
Telnet. SNMP-based management
systems including HP OpenView,Tivoli
NetView for AIX, and Sun Microsystems
Solstice Domain Manager can be used
to manage the Nautica 4000.
BCC This terminal-based (Teletype
(TTY)-compatible) tool enables platform installation and maintenance to
be performed locally or from a remote
location such as the central site. It
can be accessed through a terminal
Data Sheet Nautica 4000
attached to the Nautica 4000 or a PC
running terminal emulation software or
a Telnet session. With support for BCC,
NauticaRS provides command line syntax, which is consistent with other Bay
Networks platforms that support BCC.
Nautica Configuration Wizard
Bay Networks Nautica Configuration
Wizard is a Windows 95 Wizard application that provides an easy-to-use GUI to
set up and configure the Nautica 4000.
HTML This feature provides useful
status information on the Nautica 4000
using HTML. Users are provided platform independent access to useful
information including routing table,
active ISDN calls, ISDN history, and current NAT table. This information can
be accessed via standard Web browers
such as Netscape or Internet Explorer.
NauticaRS allows authorized remote
users to reach all the information they
need while protecting the entire network from nonsanctioned access.
Supports for RADIUS, a standards-based
authentication system, lets the Nautica
4000 fit easily into an organization’s
existing network security design. This
client/server-based security protocol
makes it easy to manage large-scale
remote access applications from a central site. The Nautica 4000 is supported
by Bay Networks Nautica RADIUS
Server for Windows 95 and Windows
NT. RADIUS offers network-wide
accounting, authentication, and authorization to service providers and network managers who need to maintain
security when remote access is
required. Several levels of comprehensive security features are provided
including the CLI feature, which verifies that incoming ISDN calls are authorized to connect. For PPP connections,
PAP and CHAP are supported. The
Nautica 4000’s RADIUS implementation
will operate with other third-party
RADIUS servers.
The Nautica 4000 also supports
Bay Networks BaySecure™ Access Control (BSAC) RADIUS. Based on award
winning technology, BSAC is an industry-standard, remote access user authentication, authorization, and accounting
solution for ISPs and enterprises. BSAC
is the only RADIUS server optimized
for Windows NT, NetWare, and UNIX
Solaris environments and the only tool
integrating network operating system
user directories while including
embedded databases, vendor specific
attributes, GUI-based user profiles, and
real-time statistics for managing remote
access security.
Technical specifications for the Bay Networks Nautica 4000 appear in Table 2.
Table 2
Bay Networks Nautica 4000 Specifications
Size (H x W x D)
3.41 x 17 x 12.95 in. (8.66 x 43 x 32.89 cm)
4.4 lb (2 Kg)
5% to 95 % relative humidity, noncondensing; 41°F to 86°F (5°C to 30°C)
Power Supply
110 VAC, 60 Hz or 240 VAC, 50 Hz input; 9 VDC, 20 W (max)
Modem Specifications
V.34, V.FC, V.32bis, V.22A/B, and V.21,
Bell 212A and 103,
V.24 LAPM and MNP 2-4 error corection,
V.42bis and MNP 5 data compression
FAX modem send/receive rates up to 14.4, Kbps V.17, V.29, V.27ter, and V.21 channel 2
MNP 10 data throughput enhancement,
Line quality monitoring and retrain
Flow control and speed buffering
System Requirements
The Nautica 4000 configurations described here are currently supported in software version 4.00, unless otherwise indicated in
this document.
Ordering Information
Ordering information for the Nautica 4000 family of routers appears in Table 3. All Nautica 4000 systems include NauticaRS
and Nautica Configuration Wizard software.
Table 3
Nautica 4000 Ordering Information
Model Number
Preconfigured Systems
Nautica 4000 preconfigured system with four ISDN BRI S/T base modules, and power cord.
EuropeanTelecommunications Standards Instiute (ETSI) ISDN-compliant.
Nautica 4000 preconfigured system with four ISDN BRI S/T base modules, eight modems,
and power cord. ETSI ISDN-compliant.
Nautica 4000 preconfigured system with four ISDN BRI U base modules (Internal NTI), and power cord.
North American ISDN-compliant.
Nautica 4000 preconfigured system with four ISDN BRI U base modules (Internal NTI), eight modems,
and power cord. North American ISDN-compliant.
? indicates country code — E (North American), B (Europe), and C (United Kingdom).
Data Sheet Nautica 4000
Table 3
Nautica 4000 Ordering Information (continued)
Model Number
Factory Configurable Systems
Nautica 4000 base system
ISDN BRI S/T base module (ETSI-compliant)
ISDN BRI S/T base module (for North America use)
ISDN BRI U base module (for North America use)
Quad modem (analog channel) base module (for European use). For expansion from zero to four modems
or for expansion from four to eight modems.
Quad modem (analog channel) base module (for North American use). For expansion from zero to four
modems or for expansion from four to eight modems.
BaySecure Access Control (BSAC) RADIUS Software
BaySecure Access Control version 1.3 with backup for Windows NT
BaySecure Access Control version 1.3 with backup for NetWare
BaySecure Access Control version 1.3 for Windows NT
BaySecure Access Control version 1.3 for NetWare
BaySecure Access Control version 2.0 with backup for Sun Solaris version 2.5.1
BaySecure Access Control version for Sun Solaris version 2.5.1
? indicates country code — E (North American), B (Europe), and C (United Kingdom).
For more sales and product information, please call 1-800-8-BAYNET.
Europe, Middle East, and Africa
Pacific Rim, Canada, and Latin America
Bay Networks, Inc.
United States
Bay Networks, Inc.
Bay Networks EMEA, S.A.
Australia +61-2-9927-8888
India +91-11-613-7401
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Copyright © 1998 Bay Networks, Inc. All rights reserved. Bay Networks, AN, BCN, and BLN are registered trademarks, and the Bay Networks logo, Bay Networks — Where Information Flows,
Adapteon, ANH, ASN, BaySecure, BayStack, BCC, CLAM, Marlin, and Nautica are trademarks of Bay Networks, Inc. All other brand and product names are trademarks or registered trademarks
of their respective holders. Information in this document is subject to change without notice. Bay Networks, Inc. assumes no responsibility for any errors that may appear in this document.
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