Cisco Systems 3130 User Manual
26-2
Cisco Catalyst Blade Switch 3130 for Dell Software Configuration Guide
OL-13270-01
Chapter 26 Configuring CDP
Configuring CDP
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.
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:
•
•
•
•
Default CDP Configuration
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.
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.
advertisement type.
Note
Steps 2 through 4 are all optional and can be performed in any order.
Table 26-1
Default CDP Configuration
Feature
Default Setting
CDP global state
Enabled
CDP interface state
Enabled
CDP timer (packet update frequency)
60 seconds
CDP holdtime (before discarding)
180 seconds
CDP Version-2 advertisements
Enabled
Command
Purpose
Step 1
configure terminal
Enter global configuration mode.
Step 2
cdp timer seconds
(Optional) Set the transmission frequency of CDP updates in seconds.
The range is 5 to 254; the default is 60 seconds.