Token Ring Interfaces

Defining a token ring interface is almost as simple as defining an Ethernet interface. In addition to setting the IP address, you must specify the correct token ring speed. All devices in a ring, including devices like sniffers, must be configured for the same speed or the whole ring will shut down. There is no way for a token ring device to autosense ring speed. To set the speed, use the ring-speed command. The allowable speeds are 16 Mbps and 4 Mbps.

The other common configuration command for a token ring network, early-token-release, tells the router to release the token as soon as it has sent its packet. The default behavior is to wait for acknowledgment after sending packets, then release the token. Here's a simple token ring configuration:

interface tokenring0
 ip address
 ring-speed 16

Getting Started

IOS Images and Configuration Files

Basic Router Configuration

Line Commands

Interface Commands

Networking Technologies

Access Lists

IP Routing Topics

Interior Routing Protocols

Border Gateway Protocol

Quality of Service

Dial-on-Demand Routing

Specialized Networking Topics

Switches and VLANs

Router Security

Troubleshooting and Logging

Quick Reference

Appendix A Network Basics


Cisco IOS in a Nutshell
Cisco IOS in a Nutshell (In a Nutshell (OReilly))
ISBN: 0596008694
EAN: 2147483647
Year: 2006
Pages: 1031
Authors: James Boney © 2008-2020.
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