Datasheet

Introduction
This document is a guide to cables and connectors for Catalyst 6500/6000, 5500/5000, and 4500/4000 series
switching modules and Catalyst 2900/3500 XL, 2940, 2970, 2950/2955, 3550, and 3750 series fixed-
configuration switches. AC power supplies, connectors, and cords for these switches are also covered.
Prerequisites
Requirements
You should identify the part or model number of your switch/supervisor, switching module, or power
supply in order to use this document effectively. Do this by visual inspection, or issue the show module
command where possible.
Components Used
This document is not restricted to specific software and hardware versions.
Conventions
Refer to Cisco Technical Tips Conventions for more information on document conventions.
Console and Aux Port Cables
Different Catalyst Supervisor Engines use either a rolled or a straight-through cable in order to connect a
terminal or modem to the console port. Refer to these documents for information on how to connect a
terminal or modem to the console port of Catalyst series switches:
• Connecting a Terminal to the Console Port on Catalyst Switches
• Connecting a Modem to the Console Port on Catalyst Switches
Auxiliary (AUX) ports on Layer 3 (L3) switches or modules behave much the same way as AUX ports on
routers and are used to connect modems. Refer to Modem-Router Connection Guide
for information on how
to connect a modem to an AUX port.
Which RJ-45 Ethernet Cable Do I Use?
A common question that concerns RJ-45 unshielded twisted pair (UTP) Ethernet cable concerns how to
distinguish between rolled, straight-through, and crossover cables, and when to use them. Use the
comparison guide found in the Types of RJ-45 Cabling section of Cabling Guide for Console and AUX
Ports in order to see the difference between these cables.
Cables to Hubs, Switches, Routers, and Workstations
Crossover and straight-through cables are used in order to connect switch ports or interfaces to network
devices. Consult this table in order to see when to use each of these cable types. Find the device in the left-
hand column and match it up with another device in the top row. The intersection of these two devices gives
you the cable type used to connect them together.
Hub Switch Router Workstation