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Understanding CDP
Understanding CDP
Cisco Discovery Protocol (CDP) is a device-discovery protocol that runs on all Cisco network
equipment. Each device sends identifying messages to a multicast address, and each device monitors the
messages sent by other devices. Information in CDP packets is used in network management software
such as CiscoWorks2000.
CDP is enabled on the bridge's Ethernet and radio ports by default.
Note
For best performance on your wireless LAN, disable CDP on all radio interfaces and on sub-interfaces
if VLANs are enabled on the bridge.
Configuring CDP
This section contains CDP configuration information and procedures:
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•
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Default CDP Configuration
Table 15-1
Table 15-1 Default CDP Configuration
Feature
CDP global state
CDP interface state
CDP holdtime (packet holdtime in seconds)
CDP timer (packets sent every x seconds)
Cisco Aironet 1400 Series Wireless Bridges Software Configuration Guide
15-2
Default CDP Configuration, page 15-2
Configuring the CDP Characteristics, page 15-3
Disabling and Enabling CDP, page 15-3
Disabling and Enabling CDP on an Interface, page 15-4
lists the default CDP settings.
Chapter 15
Default Setting
Enabled
Enabled
180
60
Configuring CDP
OL-4059-01
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