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Cisco Bug: CSCua90219 - Static BFD neighbourship toggles when neighbour int is brought up (n7k-)

Last Modified

Jan 30, 2017

Products (1)

  • Cisco Nexus 7000 Series Switches

Known Affected Releases

5.0(3)U4(0.111)

Description (partial)

Symptom: BFD session for IPV4 Static route toggles while the forwarding path is established. 

Conditions: Configure BFD session for IPV4 Static route, with L2 network in between BFD Neighbors.
BFD session comes up fine.
Shut down interface in L2 Network, such that BFD neighbor interface on one-end sees link down where as BFD neighbor interface link stays up on other-end. 
So that BFD forwarding path is down between BFD neighbors. BFD session goes down as expected.

Now bring up L2 interface, so that BFD forwarding path is established between BFD end-points.
BFD session neighbor state toggle before settling with UP State.
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