Black Box LR8000A Router User's Guide

 LR8000A
“Rapid Router User's Guide
June 1“, 1998
Copyright © 1998 All rights reserved.
This publication is protected by Federal Copyright Law, with all rights reserved. No part of this publication may be
reproduced, stored in a retrieval system, transcribed, translated, or transmitted, in any form, or by any means without prior
explicit written permission. | о
Copyright protection claimed includes all forms of copyrightable material and information now allowed by statutory or
judicial law or hereinafter granted, including without limitation, material generated from the software programs that are
displayed on the screen. | | :
The information contained in this document is subject to change without notice. The device described in this document is
furnished under a license or user agreement. ‘
All other brand or product names are trademarks or registered trademarks of their respective companies or organizations.
Table of Contents
1.0 Introduction 4
2.0 -Connections and LED indications 5
Connectors 5
LED indications 6
3.0 Installing the Rapid Rrouter 7
Connecting the cables 7
Quick configuration 8
4.0 Configuring the Rapid Router 9
Using the console interface 9
System defaults 10
3.0 Configuration menu structure 11
Main Menu 12
1: Display Current Configuration 13
2: Configure Ethernet and WAN Port 14
— 1: Enet Full Duplex Enable/Disable 14
2: Select Source of Transmit Clock 15
3: Configure Bridge 15
1: Enable/Disable Bridging 15
2: Configure Ethernet Filtering 16
4: Configure Router Menu 17
1: Enable/Disable Routing 17
2: Display Router Configuration 18
3: Display Routing Table Statistics 18
4: Display ARP Table 19
5: Configure Ethernet IP Address 19
6: Configure WAN IP Address 20
7: Add/Delete/Change a Static Route 21
8: Reset Routing Statistics 21
5: Display Network Statistics 22
6: Set System Defaults 23
7: Resetting the System 23
Appendix A. Product Specifications 24
Appendix B. Rapid Router Pinouts 25
Glossary 26
Index 29
Rapid Router User's Manual v1.2 | Page 4
1.0 Introduction
The Rapid Router supports bridging and IP routing over two physical interfaces: an Ethernet
interface for LAN connection and a synchronous interface for WAN connection. The product
essentially provides a low-cost bridge between the LAN and WAN environments.
Rapid Router features include: |
+ Static IP routing that supports default routes
+ Non-IP traffic bridging
. ICMP error messaging
* JCMP router discovery
—* Address Resolution Protocol (ARP)
* Transparent bridging with learning and aging
+ Ethernet MAC filtering (forward and reverse) —
. Ethernet full-duplex ВЕ
В Menu-driven console interface
See Appendix A for detailed specifications.
Rapid Router User's Manual v1 2
2.0 Connections and LED Indications
This section describes and illustrates:
* Connections on the Rapid Router rear panel
* LED indications observable on the Rapid Router front panel
Page 5
— Page 5
2.1 Connections
The Rapid Router rear panel has the following connectors:
WAN CONSOLE LAN ,5voc
o lo
Figure 1. Rapid Router rear panel connections
Rapid Router rear panel connectors are:
* +SYDC: A socket for serting the external power supply’s plug. The external power
the r
supply is provided with outer. Plug the power supply into an outlet with the AC
voltage and frequency listed on the power suppl
* LAN: An RJ-45 receptacle connecting the Ethernet network to the router using a shielded
LAN cable, |
* WAN: A DB-25 receptacle connecting the router to the WAN using a cable with an RS-
530 connector.
* CONSOLE: An RJ-11 Ieceptacle connecting the router to a local computer to configure
| it using terminal emulation software. See the Router Configuration section for details.
—
Rapid Router User's Manual v1.2 | Page 6
: EE В
2.2 LED indications
The Rapid Router front panel has the following LEDs:
—
eee.
9 о о o
PWR ENK Rx Tx
Figure 2. The Rapid Router front panel with LEDs В
Rapid Router LEDs are:
power. The external power supply should be connected to an outlet providing the AC
voltage and frequency specified on the power supply. o
° LNK: This indicator lights when link packets are received over Ethernet, indicating an
active Ethernet Connection.
* Rx: This indicator lights when packets are received from the Ethernet network.
* Tx: This indicator lights when packets are transmitted to the Ethernet network.
Rapid Router Users Manual v1.2 | Page 7
3.0 Installing the Rapid Router
The following items are included in the box:
“+ 1 Rapid Router
* 1 power supply and cable
* 1 console cable
* 1 Rapid Router User's Manual
3.1 Connecting the cables
DB-25 receptacle RJ-11 receptacle Power supply
for WAN cable RJ-45 receptacle for console socket
for LAN A cable
D ‚CONSOLE X wo |
0000000000000
ГО0000000000
+ T
to WAN to LAN to computer to
gateway gateway console power
supply
Figure 2. Rapid Router rear panel with cable connections.
To connect the Rapid Router, follow these steps:
1. Insert the power supply cable’s plug into the Rapid Router +5VDC socket.
CAUTION! Avoid getting shocked by doing this first before connecting the power
supply into a wall outlet. В I В
— Rapid Router User's Manual v1.2 Page 8
2.
9.
Insert the power supply”s plug end into a wall outlet or UPS.
The green power LED on the Rapid Router front panel should light to indicate that the
router has power.
Find the shielded CONSOLE port cable provided with the router.
It resembles a telephone cable.
Insert the RJ-11 plug into the CONSOLE socket on the Rapid Router.
Add a female RJ-11to female RS-232 connector to the other end of the cable.
Insert the RS-232 connector into the COMI or COM2 port of the computer you will
use to configure the router.
Configure the router using the console interface as described in the Router
Configuration section found later in this document.
Items listed in the following Quick Configuration section must be configured in order to
set up the Rapid Router to route IP traffic.
Connect your Ethernet network to the Rapid Router using the LAN RJ-45
connector.
If you are connecting directly to a Network Interface Card, you must use a crossover
card.
Connect the WAN to the Rapid Router using the WAN connector.
3.2 Quick configuration
The following changes must be made to the default configuration to begin routing IP traffic:
Assign an IP address and subnet mask to the Ethernet port.
Assign an IP address and subnet mask to the WAN port.
Assign a remote IP address and subnet mask to the WAN port.
This is the IP address and subnet mask of the interface at the other end of the wide-area
link.
Set the clock source and speed for the WAN port, if different from the default.
Set the interface mode for the WAN port, if different from the default.
Select the “Reset System” menu option from the Main Menu, or power-cycle the
router. | |
The configuration changes will take effect.
Rapid Router User's Manual v1.2 Page 9
4.0 Configuring the Rapid Router
An ASCII-based menu interface is used to configure the Rapid Router. Changes are automatically
saved in non-volatile EEPROM. For configuration changes to take effect, a user must select the
“Reset System” option from the Main Menu, or cycle the router’s power.
You can access the menu interface over a local PC terminal emulation interface (the “console”
interface). |
4.1 Connecting and implementing the console interface
Console connection to the Host router is via an RS-232 asynchronous interface
terminated in a shielded RJ-11 jack.
NOTE: Before starting a terminal emulation program, Rapid Router’s
CONSOLE port must be connected your computer’s COM1 or COM2 port with
the console cable provided, as described 1 in the previous section titled Installing
the Rapid Router.
Make sure the console is in terminal emulation mode.
2. Invoke a terminal emulation program on your computer, such as Microsoft’s
terminal.exe.
3. Adjust the communication settings to operate at 19200 Baud, 8 Bits Per
Character, No Parity, 1 Stop Bit
(19200, 8, N, 1). The console must be in terminal emulation mode.
Select the COM port to which you connected the Rapid Router,
Press ENTER.
You will see the Main Menu. Adjust the configuration as needed. For a fast initial
installation, you may configure the settings listed in the Quick Configuration section.
6. When you have finished configuring the router, choose “r” from the Main
Menu.
This makes the settings take effect. (You can also power-cycle the router to begin
using the new settings.)
Rapid Router User's Manual v1.2 | _ Page 10
4.2 System defaults
The Rapid Router is configured with default values when it is powered up for the first
time. Default values include: ВЕ
Bridging: Enabled
Routing; Disabled
No static routes are configured
IP Address (For All Ports): 0
IP Mask (For All Ports): OXFFFFFFFF —
Ethernet Full Duplex Mode: Disabled |
Filtering: Disabled
- The “Set System Defaults” option may be selected from the Main Menu at any | time to
reset the router’ s configuration to the default configuration. |
Rapid Router User's Manual v1.2 Page 11
5.0 Configuration menus
To use the configuration interface, type the number of the option you want to select or press the
ESC key to move to the previous menu level.
5.1 Menu quick reference
The following list provides a quick locator for configuration settings in the menu tree. For details
about a menu, see the indicated page.
Main Menu
1: Display Current Configuration
2: Configure Ethernet and WAN Port
1: Enet Full Duplex Enable/Disable
2: Select Source of Transmit Clock
3: Configure Bridge
1: Enable/Disable Bridging
2: Configure Ethernet Filtering
4: Configure Router
: Modify Software Key
: Modify User ID and Password
: Enable/Disable RIP
: Configure Static Routes
: Configure Inverse ARP Timer (Frame Relay)
: Configure SNMP Manager
: Configure TCP
: Enable/Disable BOOTP Client
: Display Current Configuration
5: Display Network Statistics
6: Set System Defaults
WO 00 = Су ль Во) ВО =
Rapid Router User's Manual v1.2 Page 12
5.2 Main menu
The Main Menu is the base menu that first appears upon power-up and reset. The Main Menu can
be reached at any time by pressing the ESC key repeatedly.
Rapid Router Ver 1.2
===<* Rapid Router *>==x=
Copyright (c} 1998
1. Display Current Configurations
2. Confiqure Ethernet and WAN Port
3. Configure Bridge
4. Configure Router
5. Display Network Statistics
6. Set System Defaults
7. Reset System
|
Make choice:
Figure 3: The Main Menu
Rapid Router User's Manual v1.2
5.2.1 Display the current configurations
To display the current configuration, select “1” from the Main Menu.
fmm mmm mmm meee ee AOS +
| Current Board Configuration |
Poo eee +
Routing = ENABLED
Bridging = DISABLED
Ethernet Full Duplex - DISABLED
Ethernet MAC Address =
DRAM Size =
00-E0-75-00-00-FG
4096 Kbytes
WAN Port Selected = SCC2
Transmit Clock Source = Host router
Transmit Clock Speed = 2.048 Mbps
Host router ROM version= 2.53
Remote ROM version = Unknown
Press any key to continue...
Figure 4: Current Board Configuration
Rapid Router User's Manual v1.2 Page 14
5.2.2 Configuring Ethernet and WAN ports
To configure physical Ethernet or WAN ports, select “2” from the Main Menu.
The Ethernet/WAN Port Configuration Menu displays as a result.
| 1. Enet Full Duplex Enable/Disable |
| 2. Select Source of Transmit Clock |
| Esc to Return to Previous Menu |
Make Choice:
Figure 5: Ethernet WAN Port Configuration Menu
5.2.2.1 Enabling or Disabling Ethernet Full Duplex
Enabling Ethernet Full Duplex allows the data to be transmitted and
received by the router simultaneously. To enable or disable the Ethernet
Full Duplex setting, select “1” from the Ethernet/WAN Port
Configuration Menu. The following menu displays:
1. Enable Ethernet Full Duplex
2. Disable Ethernet Full Duplex
Make choice:
Figure 6: Configure Ethernet Full Duplex Menu
The default setting is DISABLED. |
+ Select item “2” if you want to enable full duplex Ethernet
routing. Full Duplex allows Ethernet packets to be
transmitted and received simultaneously.
« Select item “1” if you want to disable full duplex Ethernet
routing.
The Current Configuration report shows the current setting of this item.
Rapid Router User's Manual v1.2 | Page 15
5.2.2.2 Selecting the source of the WAN transmit clock
To select the source of the transmit clock, choose menu item “2” from
the Ethernet/ WAN Port Configuration Menu.
Default: Router at 128 Kbps
Host router is supplying the WAN Transmit Clock.
Transmit Clock = 2.048 Mbps |
WAN Transmit Clock Menu
1. WAN Clock = external
2. WAN Clock = 8.192 Mbps
3. WAN Clock = 6.144 Mbps
4. WAN Clock = 4.096 Mbps
5. WAN Clock = 2.048 Mbps
| 6. WAN Clock = 1.536 Mbps
7. WAN Clock = 512 Kbps
8. WAN Clock = 128 Kbps
9. WAN Clock = 64 Kbps
Esc To Return To Previous Menu
Make choice:
Figure 7: Ethernet/WAN Port Configuration Menu
The “Current Configuration Report” shows the current setting of this
item. Select the desired WAN clock source (“1” for external clock)
5.2.3 Configure the bridge
Configuring the bridge established the link between the WAN and the LAN. To
configure bridging the function of the router, choose selection “3” from the Main
Menu. |
1. Enable/Disable Bridging
2. Configure Ethernet Filtering
Make Choice:
Figure 8: Bridge configuration menu
5.2.3.1 Enabling/disabling the bridge
Select item “1” from the Bridge Configuration Menu to change the
setting. The software prompts you to make the change:
Bridging currently DISABLED
Would you like to ENABLE bridging? <Y = yes>:
Select Y or N as appropriate. The default setting is DISABLED.
Rapid Router User's Manual v1.2 | | Page 16
5.2.3.2 Configuring Ethernet filtering
Select item “2” from the Bridge Configuration Menu to configure
Ethernet filtering. The following screen displays:
MAC Filter is currently DISABLED
1. Enable Standard Filtering |
2. Enable Reverse Filtering |
3. Disable Filtering |
|
|
Make Choice:
Figure 9. Configure Filter Menu
The currently enabled filter displays at the top of the menu and you have
a choice of enabling standard or reverse filtering.
« Standard filtering. Not allowing LAN-destined packets out
the WAN interface across the Rapid Router bridge
+ Reverse Filtering. Only sending packets to the outside
world across the Rapid Router bridge to a destination that
has sent something into the LAN.
e Disable Filtering. Allows all traffic.
Enabling standard filtering writes the configuration to EEPROM. The
software provides the following message:
MAC Filter is currently in STANDARD mode
Saving Configuration to EEPROM...
Enabling reverse filtering provides the following message:
MAC Filter is currently in REVERSE mode
Saving Configuration to EEPROM...
NOTE: To re-enable standard filtering select “Enable Standard
Filtering” from the Configure Filter menu.
Disabling filtering provides the following message:
. MAC Filter is currently DISABLED
Saving Configuration to EEPROM...
>”
— NOTE: Tore-enable filtering select “Enable Standard Filtering Pio
from the Configure Filter menu. | ВЕ
Rapid Router User's Manual v1.2 Page 17
5.2.4 Configure the router
To enable the router or to add static routes, select “4” from the Main Menu. The
following menu items display:
Enable/Disable Routing |
Display Router Configuration |
Display Routing Table/Statistics |
Display ARP Table |
Configure Ethernet IP Address |
. Configure WAN IP Address |
Add/Delete/Change a Static Route |
Reset Routing Statistics |
|
© Ч плен юн
Esc to Return to Previous Menu
Make Choice:
Figure 10: Router Configuration Menu
5.2.4.1 ‘Enable/disable routing
- When you select “1” from the Router Configuration Menu, the software
‘prompts you with a choice to enable or disable routing.
Routing currently ENABLED
Would you like to DISABLE Routing? <Y = yes>:
Rapid Router User's Manual v1.2 | Page 20
5.2.4.6 Configure WAN IP address
To configure a WAN IP address, select “6” from the Router
Configfuration Menu.
Current WAN IP Address : 0.0.0.0
Current WAN Subnet Mask: 0x00000000
Enter IP address: 148.444.444.444 Enter when done.
- Press Esc to cancel.
A block cursor displays over the first character of the currently
configured WAN IP. address. Type the IP address of the WAN port you
want to enter then press RETURN. The software prompts you to select
the number of bits reserved for the Host 1D:
Enter number of bits reserved for the Host ID ,<0 to
24>: —-- SE
Enter the number of digits you want to be reserved for the WAN subnet
mask, (0-24). and press RETURN. You get the following prompt:
Saving Configuration to EEPROM...
If you make a mistake you will see the message:
Invalid entry! Using original value.
Saving Configuration to EEPROM...
The default value is preserved and you are returned to the Router
Configuration Menu where you may start again.
Rapid Router User's Manual v1.2 | Page21
5.2.4.7 Add/Delete/Change a Static Route
To add, delete or change a static route, select “7” from the Router
Configuration Menu.
+енненннннненнееенененненененееннененененненеееенеененеенеененен- +
CURRENT STATIC ROUTES |
Ден нее em me — |
RE Nof Destination | Gateway |Flags | Interface |Metric|
————- aD |
1 | Not Configured | | | |
2 | Not Configured | | | |
9 | Not Configured | | | |
| Select Route (1 To 9) To Add/Change Any Other Key To Quit
PE EE bet oia oia o +
Figure 13. Current Static Routes
To add a static route, type a route number from 1 to 9.
* Type the Destination IP address for the route to be used if the route table does not contain a
mapping for the destination IP address. To add a Default Route, type 255.255.255.255 as the
Destination. There can be only one default route.
> Type the Gateway IP address for the route.
« Flags that apply to this route are set automatically: U (up), H (host), or G (gateway).
< Type | to use the Ethernet interface for this route. Type 2 to use the WAN interface. The
static route is assigned the subnet mask for the Interface you select. |
+ Metric is the number of hops (routers) required to reach the specified gateway. Type a value
~ from 01 to 16.
The Static Routes report lists the static routes that have been defined. The Route Table lists both
statically configured routes and dynamically learned routes.
mm mm mm mr ia a to +
MODIFY/ADD/DELETE STATIC ROUTE |
eat enana ES
|Rt No| Destination | Gateway |Flags|Interface |Metric|
Ee fmm mmm mmm mmm mm +----- +--------- +------ |
| 1 | Not Configured | | | | |
E 0 0 0 |
Esc to previous menu Tab to next field |
PE En nn En nn ein und +
Figure 14. Modify Static Routes
A flashing block cursor indicates where you will begin changing text. You will be prompted to
confirm the change.
5.2.4.8 Reset Routing Statistics
Select “8” from the Router Configuration Menu to reset the Routing
Statistics to their default values.
Rapid Router User's Manual v1.2 Page 22
- 5.2.5 Displaying Network Statistics
To view a real-time network statistics information report, select “5” from the
Main Menu.
Ehternet Packets Received : O
Ethernet Packets Transmitted : O
Ethernet Packet Errors
WAN Packets Received
WAN Packets Transmitted
WAN Packet Errors
TX Error -- Reset Buffers
Buffers Full Error
Packets Filtered
Figure 15: Network Traffic Information.
Rapid Router User's Manual v1.2 Page 23 -
5.2.6 Setting System Defaults
A confirmation message is displayed when the user selects the “Set System Defaults” option from
the Main Menu. If the user confirms the selection, the default configuration is saved to non-
volatile EEPROM.
5.2.7 Resetting the System
A confirmation message is displayed when the user selects the “Reset System” option from the
Main Menu. If the user confirms the selection, the Rapid Router software is reinitialized using the
configuration stored in non-volatile EEPROM. |
Rapid Router User's Manual v1.2
Appendix A. Product Specifications
LAN Interface
10BaseT Ethernet
(Shielded RJ-45)
WAN Interface
RS-530
(Male DB-25 Connector)
Management
RS-232 Menu-based user interface
(Shielded RJ-11)
Protocols
TCP/IP, ICMP, ARP
Processor
MC68EN360 QUICC
Power
80-250 VAC External Power Supply
5 Watts Max.
Physical
6” x 4.63” x 1.4”
Page 24
Rapid Router User's Manual v1.2
Appendix B. Rapid Router Pinouts
WAN (DB25 RS-530)
D 00 4 a. WU N =
NA Y Y
NC
Ground
Transmit Data A
Receive Data A
Request To Send A
Clear To Send A
Data Set Ready
Ground |
Data Carrier Detect A
Receive Clock B
Data Carrier Detect B
Transmit Clock — Ext B
Transmit Clock — Int B
Clear To Send B
Transmit Data B
Transmit Clock-Int A
Receive Data B
Receive Clock A
Local Loopback
Request To Send B
Data Terminal Ready CD+
Remote Loopback
Data Set Ready B
Data Terminal Ready B
Transmit Clock — Ext A
Test Mode
Ground
Transmit
Receive
Ground
GND
TX+
RX+
RTS+
CTS+ .
DSR+
GND
DCD+
| ВС-
10 DCD-
11 TC-
12 TCL
13 CTS-
14 TX-
15 TCI+
16 RX-
17 RC+
18 LL
19 RTS-
20 CD+
21 RL
22 DSR-
23 CD-
24 TC-
25 TM
Console -11)
GND
TX
RX
GND
NC
Page 25
Rapid Router Users Manual v1.2 Page 26
Glossary
10BaseT
DLCI
EEPROM
Ethernet
Full Duplex
ICMP
Inverse ARP
IP
IP address
Mbps baseband Ethernet specification using two pairs of twisted-pair cabling:
one pair for transmitting data and the other for receiving data. 10BaseT has a
distance limit of approximately 100 meters per segment.
Address Resolution Protocol.
Data-Link Connection Identifier. Value that specifies a PVCorSVCina
Frame Relay network. In the basic Frame Relay specification, DLCs are
locally significant (connected devices might use different values to specify
the same connection). In the LMI extended specification, DLCIs are globally
significant (DLCIs specify individual end devices).
— Electrically Erasable Programmable Read-Only Memory. Nonvolatile
memory chips that can be erased using electrical signals and reprogrammed.
connection commonly used for LANs. Runs over a variety of cable types and
provides bandwidth of 10 Mbps. Invented by Xerox Corporation and
developed jointly by Xerox, Intel, and Digital Equipment Corporation.
Capable of handling simultaneous data transmission between a sending
station and a receiving station.
Internet Control Message Protocol. Internet protocol that reports errors and
provides other information relevant to IP packet processing, such as routing
information.
Inverse Address Resolution Protocol. Enables routers to obtain the IP address
for a known Ethernet address of a device associated with a virtual circuit.
Method of building dynamic routes in a network.
Internet Protocol. Part of the TCP/IP protocol. IP networks are
connectionless, packet-switching networks.
32-bit address assigned to hosts using TCP/IP. An IP address is written as 4
octets separated by periods. Each address consists of a network number, an
optional subnetwork number, and a host number. The network and
subnetwork numbers together are used for routing, while the host number 1s
used to address an individual host within the network or subnetwork.
Rapid Router User's Manual v1.2 | Page 27
IP SNAP
LAN
MAC
MAC address
OSI Reference
Model
Subnetwork Access Protocol. Internet protocol that operates between a
network entity in the subnetwork and a network entity in the end system.
SNAP specifies a standard method of encapsulating IP datagrams and ARP
messages on IEEE networks. The SNAP entity in the end system makes use
of the services of the subnetwork and performs three key functions: data
transfer, connection management, and QOS selection.
Local Area Network. Privately owned network connecting devices over a
limited geographic area. May use TCP/IP or one of several other protocols.
Media Access Control. Lower of the two sublayers of the data link layer
defined by the IEEE.
Standardized data link layer address that is required for every port or device
that connects to a LAN. Other devices in the network use these addresses to
locate specific ports in the network and to create and update routing tables
and data structures. MAC addresses are 6 bytes long and are controlled by the
IEEE. Also known as a hardware address, a MAC-layer address, or a physical
address.
Network architectural model developed by ISO and ITU-T. The model
consists of seven layers, each of which specifies particular network functions.
The lowest layer is closest to the media technology. The lower two layers are
implemented in hardware and software, while the upper five layers are
implemented only in software. The highest layer is closest to the user. The
layers are:
1. Physical layer: The actual wires and connections in the network.
2. Data link layer: Deals with physical addressing, network topology, error
notification, and ordered delivery.
3. Network layer: Deals with connectivity, path selection, and routing.
4. Transport layer: Deals with network communication, virtual circuit
management, fault detection, and flow control.
5. Session layer: Manages sessions between applications.
6. Presentation layer: Deals with data structures used by networked
applications.
7. Application layer: Networked software applications such as e-mail,
| Telnet, and tp.
Rapid Router User's Manual v1.2 Page 28
Packet
PPP
PYC
Router
SNMP
Subnet Mask
TCP/IP
ТЕТР
Logical grouping of information that includes a header containing control
information and (usually) user data. Packets are most often used to refer to
network layer units of data. Messages are typically broken into several
packets. Some networks use fixed packet sizes; others use variable packet
sizes. Packets typically have standard header information that identifies the
packet. In contrast, frames contain only data; information about the frames is
— transmitted on the control plane.
The terms datagram, frame, message, and segment are also used to describe
logical information groupings at various layers of the OSI reference model
and in various technology circles.
- Point-to-Point Protocol. A successor to SLIP that provides router-to-router
and host-to-network connections over synchronous and asynchronous circuits.
Permanent Virtual Circuit. Virtual circuit that is permanently established.
PVCs save bandwidth associated with circuit establishment and tear down in
situations where certain virtual circuits must exist all the time.
Routing Information Protocol. Internet protocol used to exchange routing
information within a system. RIP uses hop count as a routing metric.
Network layer device that uses one or more metrics to determine the optimal
— path along which network traffic should be forwarded. Routers forward
packets from one network to another based on network layer information. A
router may connect networks using various protocols by encapsulating data
within another network's packet format or by removing layers of packet
formatting. |
Simple Network Management Protocol. Network management protocol used
in TCP/IP networks. SNMP provides a way to monitor and control network
devices, and to manage configurations, statistics collection, performance, and
security.
32-bit address mask used in IP to indicate the bits of an IP address that are
being used for the subnet address.
Protocols used for IP networks, such as the Internet, intranets, and many
LANs. IP networks are connectionless, packet-switching networks.
Trivial File Transfer Protocol. Simplified version of FTP that allows files to
be transferred from one computer to another over a network.
Wide Area Network. Data communications network that serves users across a
broad geographic area and often uses transmission devices provided by
common carriers. Frame Relay is an example of a WANS.
Rapid Router User's Manual v1.2
index
1
10/100BaseT - 25
LMI - 27
Local Area Network - 27
Local Management Interface - 27
A
Address Resolution Protocol - 25
ARP 25 |
ARP, Inverse - 26
M
MAC - 27
MAC address - 27
Media Access Contro! - 27
B
BOOTP - 25
Bootstrap Protocol - 25
N
network layers - 27
D
Data-Link Connection Identifier - 25
DLCI - 25
O
OSI reference model ; 27
P
packets - 29
Permanent Virtual Circuit - 29
Point-to-Point Protocol - 29
PPP - 29
PVC - 29
E
EEPROM - 25
Ethernet - 25
F
Fast Ethernet - 25
Frame Relay - 25
Full Duplex - 25 .
R
RIP - 29
router - 29 |
Routing Information Protocol - 29
G
glossary - 25
I
ICMP - 25
Internet Control Message Protocol - 25
Internet Protocol - 26
Inverse ARP - 26
IP address - 26
IP SNAP - 27
L
LAN - 27
S
Simple Network Management Protocol - 29
SNMP -29
subnet mask - 29 |
Subnetwork Access Protocol - 27
SVC-29
Switched Virtual Circuit - 29
Page 29
T
TCP - 30
TFTP - 30
Trivial File Transfer Protocol - 30
Rapid Router User's Manual v1.2 | | | Page 30
Ww | WAN - 30
Wide Area Network - 30
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