ProCurve Series 2300 and 2500 Switches Release Notes

190
Enhancements in Release F.02.02
CDP
Figure 87 (page 188) illustrates how multiple CDP neighbors can appear on a single port. In this case,
switch "A" has three CDP neighbors on port 1 because the intervening devices are not CDP-capable
and simply forward CDP neighbors data out all ports (except the port on which the data was
received).
Configuring CDP on the Switch
On a Series 2500 switch you can:
■ View the switch’s current global and per-port CDP configuration
■ List the current contents of the switch’s CDP Neighbors table (that is, view a listing of the
CDP devices of which the switch is aware)
■ Enable or disable CDP (Default: Enabled)
■ Specify the hold time (CDP packet time-to-live) for CDP data delivered to neighboring CDP
devices. For example, in CDP switch "A" you can specify the hold time for switch "A" entries
in the CDP Neighbor tables of other CDP devices. (Default: 180 seconds)
■ Specify the transmission interval for CDP packets. (Default: 60 seconds)
CLI Commands Described in this Section
Viewing the Switch’s Current CDP Configuration
This command lists the switch’s global and per-port CDP configuration. (In the factory default
configuration, the switch runs CDP on all ports with a hold time of 180 seconds and a transmit interval
of 60 seconds.)
Syntax: show cdp
This example shows the default CDP configuration.
show CDP below
show CDP neighbors page 191
cdp clear page 192
[no] cdp run page 193
[no] cdp enable page 194
cdp holdtime page 194
cdp timer page 195