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Cisco Bug: CSCvi86100 - BFD session (hw-offload only) flaps on Tomahawk toward Typhoon/third party

Last Modified

Sep 21, 2018

Products (1)

  • Cisco ASR 9000 Series Aggregation Services Routers

Known Affected Releases

5.3.1.BASE 6.1.3.BASE

Description (partial)

Symptom:
BFD  HW offload  + ISIS between directly connected  (Tomahawk)  and third party/Typhoon constantly flapping
It's observed that whenever the Link Flap between two devices, BFD took quite longer to come-up (hours in one particular setup) and in between it toggles the ISIS Adj.

Conditions:
BFD  HW offload  is enabled  
Tomahawk on one side, Typhoon(or the other third party device) is  a neigbour
In some cases   BFD  HW offload+Tomahawk is stable between devices or BFD took quite longer to come-up (hours in one particular setup)
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