BFD on Bundle

Unanswered Question
Feb 12th, 2009
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Can I used BFD over Bundle (LAG)?

I want to use BFD on IOS-XR Bundle Interface.

R1 (IOS-XR) ----L2 switch - R2

| R3 so on

R1-R2 ( /31 point to point) , R1-R3 same way. L2 switch to R1 , Bundle.

With this, can IOS-XR Bundle interface for each Router have BFD session and how it reacts ot single link failure par tof bundle ??



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chintan-shah Sun, 02/15/2009 - 21:48
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Thanks Laurent. It appears that BFD on Bundle interface doesn't support echo packets. so we will have to use asyncronous mode only and it says BFD peer will be up unles VLAN/Bunlde is up.

So if i have setup

IOS-XR (CR)----Bundle---L2 switch--- PE.

PE to L2 switch - 1 gig link fails , will BFD on CR detect thsi failure and will inform uppler layer (IS-IS) ??


Laurent Aubert Mon, 02/16/2009 - 15:12
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  • Cisco Employee,


I did not personally test this configuration but as BFD packets are between the PE and the XR box, I'm expected it will work.




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