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Cisco Bug: CSCur39371 - ASR 5000: Hardening in ECMP/TUNNEL/v6-LPM

Last Modified

Dec 24, 2016

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

17.0.0

Description (partial)

Symptom:
The NPU manager task recovery on ASR 5000 fails to recover the forwarding entry for 6to4 tunnel routes. As a result, the forwarding lookup fails for the tunnel routes as shown below and traffic cannot be sent over these tunnel routes.

[one]PNST40DEV1# task kill facility npumgr instance 3
[one]PNST40DEV1# show npu forward lookup vpnid 2 prefix bbcc::1  slot 3 verbose
Forwarding lookup fails

Conditions:
One of the 6to4 tunnel routes in the ECMP is deleted and the NPU manager task is restarted.
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  • Full Description (including symptoms, conditions and workarounds)
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