Specifications

27-2
Cisco MWR 2941 Mobile Wireless Edge Router Release 3.5 Software Configuration Guide, Cisco IOS Release 15.1(3)MR
OL-26895-01
Chapter 27 Configuring Cisco Discovery Protocol
Configuring CDP
For a router and connected endpoint devices running Cisco Medianet
• CDP identifies connected endpoints that communicate directly with the router.
• 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.
The router supports CDP Version 2.
Configuring CDP
• Default CDP Configuration, page 27-2
• Configuring the CDP Characteristics, page 27-2
• Disabling and Enabling CDP, page 27-3
• Disabling and Enabling CDP on an Interface, page 27-4
Default CDP Configuration
Table 27-1 shows the default CDP configuration.
Configuring the CDP Characteristics
You can configure the frequency of CDP updates, the amount of time to hold the information before
discarding it, and whether or not to send Version-2 advertisements.
Beginning in privileged EXEC mode, follow these steps to configure the CDP timer, holdtime, and
advertisement type.
Note Steps 2 through 4 are all optional and can be performed in any order.
Table 27-1 Default CDP Configuration
Feature Default Setting
CDP global state Enabled.
CDP interface state Enabled only on NNIs; disabled on ENIs
Note CDP is not supported on UNIs.
CDP timer (packet update frequency) 60 seconds
CDP holdtime (before discarding) 180 seconds
CDP Version-2 advertisements Enabled