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Community Member

UDLD

Hi all

am i right in saying this is enabled on GE fiber ports by default and switched off on copper ports by default?

should I only enable this on my L3 links between my switces ? and leave it off everywhere else ?

4 REPLIES
Cisco Employee

Re: UDLD

Hi Carl,

UDLD is disabled on all port by default.

I will enabled all the ports with aggressive mode (it will error disabled when it detect unidirectional link).

HTH,

jerry

Bronze
Community Member

Re: UDLD

how do i enable it in aggressive mode ?

Cisco Employee

Re: UDLD

Hi,

In the global config mode, use udld aggressive to enable UDLD aggressive to all ports.

http://www.cisco.com/en/US/docs/switches/lan/catalyst3560/software/release/12.2_25_see/command/reference/cli3.html#wp1590243

If you would like to enable it per port based, use udld port aggressive to enble it per port.

http://www.cisco.com/en/US/docs/switches/lan/catalyst3560/software/release/12.2_25_see/command/reference/cli3.html#wp1921491

HTH,

jerry

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