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sarahr202
Contributor

udld and cdp

hi everybody!

does udld require cdp ? if not then how udld determines neighbor id neighbor port id?

thanks a lot!

1 ACCEPTED SOLUTION

Accepted Solutions
Mark Yeates
Rising star

Sarah,

UDLD does not use CDP to detect it's neighbor. UDLD uses it's own form of hello messages to detect neighbors, and determine a fault. Here are some guides to help you further understand this.

http://www.cisco.com/en/US/docs/switches/lan/catalyst3550/software/release/12.1_19_ea1/configuration/guide/swudld.html#wp1042082

http://www.cisco.com/en/US/tech/tk389/tk621/technologies_tech_note09186a008009477b.shtml

Mark

View solution in original post

3 REPLIES 3
Mark Yeates
Rising star

Sarah,

UDLD does not use CDP to detect it's neighbor. UDLD uses it's own form of hello messages to detect neighbors, and determine a fault. Here are some guides to help you further understand this.

http://www.cisco.com/en/US/docs/switches/lan/catalyst3550/software/release/12.1_19_ea1/configuration/guide/swudld.html#wp1042082

http://www.cisco.com/en/US/tech/tk389/tk621/technologies_tech_note09186a008009477b.shtml

Mark

View solution in original post

Thanks Mark for your reply and link. I got it now!

shubhamkumarhcl
Beginner