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Cisco Bug: CSCvu80435 - Duplicate Access tunnel entry in F0 and fed database leading to traffic loss.

Last Modified

Aug 20, 2020

Products (1)

  • Cisco Catalyst 9300 Series Switches

Known Affected Releases

16.9.2 16.9.4

Description (partial)

Symptom:
When client roams from AP1 to AP2 on the same switch ping to gateway starts to fail and eventually the client loses the IP. 

On the edge switch it was seen that even though the client has roamed to AP2 the IP device tracking database is still pointing to access tunnel of AP1 implying that this client traffic should be sent to interface connected to AP1.

On inspecting the vxlan output on the switch it was observed that for AP2 there are 2 entries for access tunnel in FMAN-FP and fed output. In FMAN-RP and access-tunnel summary we only see one access tunnel for this AP.

Conditions:
9300 catalyst Edge switch is running 16.9.4.
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