[c-nsp] RES: RES: UDLD misbehaviour

Fri Jul 15 10:42:46 EDT 2011

Hi,

Thanks for the inputs.

I figured out that only one side had errdisable recovery for UDLD, and as the state machine (aggressive mode) didn't detected the neighbor after recovery, it wouldn't bring the interface down.
The recommendation is not enable automatic recovery for UDLD, at all.

Cheers.

-----Mensagem original-----
De: Antonio Soares [mailto:amsoares at netcabo.pt] 
Enviada em: quinta-feira, 14 de julho de 2011 09:48
Para: Leonardo Gama Souza; 'Andrew Koch'
Cc: cisco-nsp at puck.nether.net
Assunto: RE: [c-nsp] UDLD misbehaviour

Were you able to find if it was a permanent failure or intermittent
failure
? If it was intermittent, you will have up and down interfaces with
errdisable always trying to put the interface up and then udld putting
it
down again. For this reason, the automatic recovery should be disabled.
And
it seems in your case, you had it enabled with a 30 seconds timer,
wasn't it
?

Regards,

Antonio Soares, CCIE #18473 (R&S/SP)
amsoares at netcabo.pt
http://www.ccie18473.net

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