UDLD implementation details

[zir868686]

Hello.

I'm trying to implement the UDLD protocol (Cisco-compatible), but face  some problems. There is no enough information for implementing this  protocol neither in RFC 5171 (http://tools.ietf.org/html/rfc5171) nor on  cisco.com (articles

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

and

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

How can I get a more detailed information regarding protocol state  machines and timers?

Thanks in advance.

[Peter Paluch]

Hi Oleg,

I do not know if such details are available as the UDLD is a proprietary and a patented protocol. However, it may be useful to read also the US patent where UDLD is described. I am attaching the PDF of the patent to this message. Perhaps it will help a little. Otherwise, you may need to find out about the timers by observing the UDLD behavior closely on Cisco switches.

Best regards,

Peter

[zir868686]

Thanks a lot, Peter!

Very useful document.