Cdp And Switch Stacks; Default Cdp Configuration - Cisco Catalyst 2960 Software Configuration Manual
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Also See for Catalyst 2960:
- Configuration manual (2288 pages) ,
- Command reference manual (800 pages) ,
- Hardware installation manual (108 pages)
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Configuring CDP
On the switch, CDP enables Network Assistant to display a graphical view of the network. The switch
uses CDP to find cluster candidates and maintain information about cluster members and other devices
up to three cluster-enabled devices away from the command switch by default.
For a switch and connected endpoint devices running Cisco Medianet
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The switch supports CDP Version 2.
CDP and Switch Stacks
A switch stack appears as a single switch in the network. Therefore, CDP discovers the switch stack, not
the individual stack members. The switch stack sends CDP messages to neighboring network devices
when there are changes to the switch stack membership, such as stack members being added or removed.
Configuring CDP
These sections contain this configuration information:
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Default CDP Configuration
Table 25-1
Table 25-1
Feature
CDP global state
CDP interface state
CDP timer (packet update frequency)
CDP holdtime (before discarding)
CDP Version-2 advertisements
Catalyst 2960 and 2960-S Switches Software Configuration Guide, Release 15.0(1)SE
25-2
CDP identifies connected endpoints that communicate directly with the switch.
To prevent duplicate reports of neighboring devices, only one wired switch reports the location
information.
The wired switch and the endpoints both send and receive location information.
For information, go to:
http://www.cisco.com/en/US/docs/ios/netmgmt/configuration/guide/nm_cdp_discover.html.
Default CDP Configuration, page 25-2
Configuring the CDP Characteristics, page 25-3
Disabling and Enabling CDP, page 25-3
Disabling and Enabling CDP on an Interface, page 25-4
shows the default CDP configuration.
Default CDP Configuration
Chapter 25
Default Setting
Enabled
Enabled
60 seconds
180 seconds
Enabled
Configuring CDP
OL-26520-01
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