Cisco 2500 Series Operator's manual

Cisco 2500 Multiport Installation and
Configuration Guide
About this Guide●
Overview of the Router●
Preparing to Install the Router●
Installing the Router●
Configuring the Router●
Troubleshooting●
Maintaining the Router●
Cabling●
Copyright 1989-1998 © Cisco Systems Inc.
Cisco 2500 Multiport Installation and Configuration Guide
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_fix/cis2500/2520/2520_23/index.htm [10/27/2000 3:07:27 PM]

Table of Contents
About This Guide
Objectives
Audience
Organization
Conventions
About This Guide
This section discusses the objectives, audience, organization, and conventions of this hardware
installation and configuration guide.
Objectives
This publication will step you through the initial site preparation, installation, and configuration of the
router. Troubleshooting and maintenance procedures, and cable specifications are also provided.
Time Saver Use the quick reference card that came with your router for quick cabling
instructions.
Audience
This publication is designed for the person installing the router, who should be familiar with electronic
circuitry and wiring practices and have experience as an electronic or electromechanical technician.
Organization
The major sections of this hardware installation and configuration guide are as follows:
Chapter 1, "Overview," discusses the features and specifications of the router, and describes how
to obtain technical support and order documentation.
●
Chapter 2, "Preparing to Install the Router," discusses environmental requirements, safety
recommendations, and describes the various ports and how to prepare for connections between
networks and ports.
●
Chapter 3, "Installing the Router," includes basic installation information and discusses making●
About this Guide
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_fix/cis2500/2520/2520_23/c2520atg.htm (1 of 2) [10/27/2000 3:07:31 PM]

connections to your LAN, WAN, and console terminal.
Chapter 4, "Configuring the Cisco Multiport Serial Routers," discusses configuring the terminal
and modems and other asynchronous devices attached to the multiport routers manually using
configuration mode, using AutoInstall, or manually using the setup facility.
●
Appendix A, "Troubleshooting the Router," discusses how to isolate problems and read the LEDs.●
Appendix B, "Maintaining the Router," discusses selected maintenance procedures.●
Appendix C, "Cable Specifications," provides pinouts for the router ports and cables.●
Conventions
This publication uses the following conventions to convey instructions and information.
Command descriptions use these conventions:
Commands and keywords are in boldface font.
●
Variables for which you supply values are in italic font.●
Elements in square brackets ([ ]) are optional.●
Alternative but required keywords are grouped in braces ({ }) and are separated by vertical bars ( |
).
●
Examples use these conventions:
Terminal sessions and information the system displays are in screen font.
●
Information you enter is in boldface screen font.●
Nonprinting characters are in angle brackets (< >).●
Default responses to system prompts are in square brackets ([ ]).●
Note Means reader take note. Notes contain helpful suggestions or references to materials not contained
in this manual.
Time Saver Means the described action saves time. You can save time by performing the action
described in the paragraph.
Caution Means reader be careful. In this situation, you might do something that could result in
equipment damage or loss of data.
Warning This warning symbol means danger. You are in a situation that could cause bodily
injury. Before you work on any equipment, you must be aware of the hazards involved with
electrical circuitry and familiar with standard practices for preventing accidents. (To see translated
versions of this warning, refer to the "Regulatory Compliance and Safety Information" document
that accompanied the router.)
Copyright 1989-1997 © Cisco Systems Inc.
About this Guide
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_fix/cis2500/2520/2520_23/c2520atg.htm (2 of 2) [10/27/2000 3:07:31 PM]

Table of Contents
Overview of the Router
Router Hardware Features
Port Configuration
Asynchronous/Synchronous Port Features
Communications Server Services
Remote Node Services
Terminal Services
Asynchronous Routing Services
Protocol Translation Services
System Specifications
Obtaining Service and Support
Cisco Connection Online
Ordering Documentation
Overview of the Router
The Cisco 2520/CPA2520, Cisco 2521/CPA2521, Cisco 2522/CPA2522, and Cisco 2523/CPA2523
routers are full-featured multiport serial routers with synchronous serial, LAN, and
asynchronous/synchronous serial ports permitting use as a router or communications server.
Note Throughout this publication, "the router" refers to the Cisco 2520/CPA2520, Cisco 2521/CPA2521,
Cisco 2522/CPA2522, and Cisco 2523/CPA2523 routers except when specified otherwise.
Router Hardware Features
The multiport serial routers are available in the following configurations:
Cisco 2520/CPA2520 1 Ethernet port with a selectable attachment unit interface (AUI) connection or 1
Ethernet 10BaseT connection
1 Integrated Services Digital Network (ISDN) Basic Rate Interface (BRI)
port (RJ-45)
2 high-speed synchronous serial ports
2 low-speed asynchronous/synchronous serial ports
Overview of the Router
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_fix/cis2500/2520/2520_23/c2520ovr.htm (1 of 8) [10/27/2000 3:07:36 PM]

Cisco 2521/CPA2521 1 Token Ring shielded twisted pair (STP) port or 1 Token Ring unshielded
twisted-pair (UTP) port
1 ISDN BRI port (RJ-45)
2 high-speed synchronous serial ports
2 low-speed asynchronous/synchronous serial ports
Cisco 2522/CPA2522 1 Ethernet port with a selectable AUI connection or 1 Ethernet 10BaseT
connection
1 ISDN BRI port (RJ-45)
2 high-speed synchronous serial ports
8 low-speed asynchronous/synchronous serial ports
Cisco 2523/CPA2523 1 Token Ring STP port or 1 Token Ring UTP port
1 ISDN BRI port (RJ-45)
2 high-speed synchronous serial ports
8 low-speed asynchronous/synchronous serial ports
Figure 1-1, Figure 1-2, Figure 1-3, and Figure 1-4 shows the rear panels of the Cisco 2520/CPA2520,
Cisco 2521/CPA2521, Cisco 2522/CPA2522, and Cisco 2523/CPA2523 routers, respectively.
The multiport serial routers function not only as multiprotocol routers but also as communication servers
(see Figure 1-1) for telecommuting services. The multiport serial routers offer high-speed synchronous
serial lines for T1 connections, and low-speed asynchronous/synchronous serial lines to attach terminal
equipment such as a channel service unit/data service unit (CSU/DSU).
Figure 1-1 through Figure 1-4 show the rear panels of the multiport serial routers.
Figure 1-1: Cisco 2520/CPA2520 Multiport Serial Router--Rear Panel
Figure 1-2: Cisco 2521/CPA2521 Multiport Serial Router--Rear Panel
Figure 1-3: Cisco 2522/CPA2522 Multiport Serial Router--Rear Panel
Overview of the Router
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_fix/cis2500/2520/2520_23/c2520ovr.htm (2 of 8) [10/27/2000 3:07:36 PM]

Figure 1-4: Cisco 2523/CPA2523 Multiport Serial Router--Rear Panel
Port Configuration
The asynchronous/synchronous ports are configured as either asynchronous or synchronous. The default
is a synchronous port configuration.
Asynchronous/Synchronous Port Features
The low-speed asynchronous/synchronous ports connect terminals, printers, modems, microcomputers,
and remote LANs over asynchronous serial lines to an internetwork, or to synchronous devices such as
DSU/CSUs on the same ports. The asynchronous/ synchronous ports support data transmission rates of
up to 115.2 kbps on the following serial interfaces:
EIA/TIA-232
●
EIA/TIA-449●
EIA-530●
V.35●
X.21●
Note EIA/TIA-232 and EIA/TIA-449 were known as recommended standards RS-232 and RS-449
before their acceptance as standards by the Electronic Industries Association (EIA) and
Telecommunications Industry Association (TIA).
The multiport serial routers support numerous protocols. The following are examples of some of the
low-speed synchronous and asynchronous protocols:
Autobaud
●
Overview of the Router
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_fix/cis2500/2520/2520_23/c2520ovr.htm (3 of 8) [10/27/2000 3:07:36 PM]

Bisync●
Frame Relay●
Half-duplex operation●
HDLC●
PPP●
SDLC●
X.25●
Communications Server Services
The multiport router acts as a communications server to connect terminals, printers, modems,
microcomputers, and remote LANs over asynchronous serial lines to an internetwork. The
communications server uses a set of connection services to allow remote networks access to an
internetwork of LANs and WANs.
The router supports four types of server operation:
Remote node services
●
Terminal services●
Asynchronous routing services●
Protocol translation services●
Remote Node Services
Remote node services support remote network connectivity with Serial Line Internet Protocol (SLIP),
Point-to-Point Protocol (PPP), or AppleTalk Remote Access Protocol (ARA protocol).
Single users with laptop or desktop computing devices can access corporate data and many other
resources on the Internet using dialup lines. Figure 1-5 shows an example network.
Figure 1-5: Remote Node Services--Example Network
Overview of the Router
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_fix/cis2500/2520/2520_23/c2520ovr.htm (4 of 8) [10/27/2000 3:07:36 PM]

Terminal Services
Terminal services provide terminal-to-host connectivity with virtual terminal protocols including Telnet,
rlogin, local-area transport (LAT), TN3270, and X.25 packet assembler/disassembler (PAD). Terminal
services can be used to connect to a modem in a modem pool for outbound connectivity. Figure 1-6
shows an example network.
Figure 1-6: Terminal Services--Example Network
Asynchronous Routing Services
Routing services enable the multiport router to route packets over LANs and WANs using the
asynchronous interfaces. A key benefit of asynchronous routing is that it provides low-cost operation by
using dialup telephone networks only when needed. Figure 1-7 shows an example network.
Figure 1-7: Asynchronous Routing--Example Network
Protocol Translation Services
Protocol translation allows terminal services running over one protocol to be translated to terminal
services running over another protocol such as an X.25 packet PAD to Telnet (using Transmission
Control Protocol/Internet Protocol [TCP/IP]). Protocol translation on the multiport router supports
Telnet, TN3270, LAT, and X.25 PAD. Figure 1-8 shows an example network.
Figure 1-8: Protocol Translation Services--Example Network
Overview of the Router
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_fix/cis2500/2520/2520_23/c2520ovr.htm (5 of 8) [10/27/2000 3:07:36 PM]

System Specifications
The system specifications of the Cisco 2500 series multiport routers are listed in Table 1-1.
Table 1-1: System Specifications
Description Specification
Dimensions (H x W x D) 1.75 x 17.5 x 10.56 inches (one rack unit) (4.44 x 44.45 x 26.82 cm)
Weight 10 lb (4.5 kg)
Input voltage, AC power supply
Current
Frequency
Power dissipation
100 to 240 VAC
0.6 to 1.2A
50 to 60 Hz
40W (maximum), 135.5 Btus1/hr
Input voltage, DC power supply
Current
Power dissipation
- 40 to -72 VDC
1.5 to 1.0A
40W (maximum), 135.5 Btus/hr
Processor 20-MHz Motorola 68EC030
Network interface options model 2520:
1 Ethernet (AUI or 10BaseT), 1 ISDN BRI port, 2 synchronous
serial, 2 asynchronous/ synchronous serial
●
model 2521:
1 Token Ring (DB-9 or UTP), 1 ISDN BRI port, 2 synchronous
serial, 2 asynchronous/ synchronous serial
●
model 2522:
1 Ethernet (AUI or 10BaseT), 1 ISDN BRI port, 2 synchronous
serial, 8 asynchronous/ synchronous serial
●
model 2523:
1 Token Ring (DB-9 or UTP), 1 ISDN BRI port, 2 synchronous
serial, 8 asynchronous/ synchronous serial
●
Operating environment 32 to 104×F (0 to 40×C)
Nonoperating temperature -40 to 185×F (-40 to 85×C)
Overview of the Router
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_fix/cis2500/2520/2520_23/c2520ovr.htm (6 of 8) [10/27/2000 3:07:36 PM]

Operating humidity 5 to 95%, noncondensing
Noise level 34 dBa @ 3' (0.914 m)
Regulatory Compliance FCC Class A. For more regulatory information, refer to the Regulatory
Compliance and Safety Information document that accompanied you
router.
1BTU = British thermal unit.
Obtaining Service and Support
For service and support for a product purchased from a reseller, contact the reseller. Resellers offer a
wide variety of Cisco service and support programs, which are described in the information packet that
shipped with your chassis.
If you purchased your product from a reseller, you can access Cisco Connection Online (CCO) as a
guest. CCO is Cisco Systems' primary, real-time support channel.Your reseller offers programs that
include direct access to CCO's services.
For service and support for a product purchased directly from Cisco, use CCO.
Cisco Connection Online
CCO is Cisco Systems' primary, real-time support channel. SMARTnet customers and partners can
self-register on CCO to obtain additional content and services.
Available 24 hours a day, 7 days a week, CCO provides a wealth of standard and value-added services to
Cisco's customers and business partners. CCO services include product information, software updates,
release notes, technical tips, the Bug Navigator, configuration notes, brochures, descriptions of service
offerings, and download access to public and authorized files.
CCO serves a wide variety of users through two interfaces that are updated and enhanced
simultaneously-a character-based version and a multimedia version that resides on the World Wide Web
(WWW). The character-based CCO supports Zmodem, Kermit, Xmodem, FTP, and Internet e-mail, and
is excellent for quick access to information over lower bandwidths. The WWW version of CCO provides
richly formatted documents with photographs, figures, graphics, and video, as well as hyperlinks to
related information.
You can access CCO in the following ways:
WWW: http://www.cisco.com.
●
WWW: http://www-europe.cisco.com.●
WWW: http://www-china.cisco.com.●
Telnet: cco.cisco.com.●
Modem: From North America, 408 526-8070; from Europe, 33 1 64 46 40 82.●
Overview of the Router
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_fix/cis2500/2520/2520_23/c2520ovr.htm (7 of 8) [10/27/2000 3:07:36 PM]