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BFD and Graceful start query


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#1 vista_network

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Posted 26 April 2013 - 01:35 AM

Hey Guys , 

 

Putting up this query over here bcas i know experts eyes are here . 

 

Can BFD and NSF work together . ( they can be configured thats what i know but will they really work simultaneously ) 

 

6500 connectivity to - > CE ASR1004 with BGP enabled 

 

Thanks in advance for your answer . 


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#2 MarkinManchester

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Posted 26 April 2013 - 01:47 AM

read this guys notes, but a short summary would be

 

BFD is kinder to the router CPU, but doesn't necessarily play well with NSF, even in recent code (haven't exhaustively checked). NSF-friendly BFD is coming, where the BFD is put into an artificial state to keep the peer router from noticing the link dropped until the 2nd Sup can come up. This requires the second Sup have backup BFD state and be, in effect, a "hot spare", I presume to get message out fast enough that BFD won't trigger

 

http://www.netcrafts...re-routing.html


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#3 vista_network

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Posted 29 April 2013 - 03:58 AM

Thanks mate :-) . it helped .


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