7 FDP Overview

Displaying FDP information for an interface

To display FDP information for an interface, enter a command such as the following.

BrocadeA# show fdp interface ethernet 1/1/1

FastEthernet2/3 is up, line protocol is up

Encapsulation ethernet

Sending FDP packets every 5 seconds

Holdtime is 180 seconds

This example shows information for Ethernet port 1/1/1. The port sends FDP updates every 5 seconds. Neighbors that receive the updates can hold them for up to 180 seconds before discarding them.

Syntax: show fdp interface [ethernet <stack-unit>/<slot>/<port>]

The ethernet <stack-unit>/<slot>/<port>parameter lists the information only for the specified ethernet interface. Stack-unit is 1.

Displaying FDP and CDP statistics

To display FDP and CDP packet statistics, enter the following command.

BrocadeA# show fdp traffic

CDP/FDP counters:

Total packets output: 6, Input: 5

Hdr syntax: 0, Chksum error: 0, Encaps failed: 0

No memory: 0, Invalid packet: 0, Fragmented: 0

Internal errors: 0

Syntax: show fdp traffic

Clearing FDP and CDP information

You can clear the following FDP and CDP information:

Information received in FDP and CDP updates

FDP and CDP statistics

The same commands clear information for both FDP and CDP.

Clearing FDP and CDP neighbor information

To clear the information received in FDP and CDP updates from neighboring devices, enter the following command.

Brocade# clear fdp table

Syntax: clear fdp table

NOTE

This command clears all the updates for FDP and CDP.

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Brocade Communications Systems 6650 manual Clearing FDP and CDP information, Displaying FDP information for an interface