Cabletron Discovery Protocol (CDP)
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• When the global CDP setting is disabled, the switch does not send CDP
packets from any port, regardless of the port CDP setting. Any CDP packets
received are flooded to all other ports.
Example
This example sets the switch to CDP Auto-enable mode.
cdp (Interface Configuration)
Use this command to enable CDP on an interface. Use the no form to restore the
default setting.
Syntax
cdp {enable | disable | auto-enable}
no cdp
• enable - The port always sends and receives CDP packets, except when the
switch global CDP setting is disabled.
• disable - The port never sends CDP packets. CDP packets received are
discarded unless the CDP global setting is disabled, in which case they are
flooded to other ports.
• auto-enable - The port sends and receives CDP packets. If the global CDP
setting is also “auto-enabled,” the port only starts sending packets once a
CDP packet has been received on this or any other switch port.
Default Setting
auto-enable
Command Mode
Interface Configuration
Example
This example enables CDP on port 1.
Console(config)#cdp auto-run
Console(config)#
Console(config)#int eth 1/1
Console(config-if)#cdp enable
Console(config-if)#
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