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Cisco Bug: CSCuq51541 - Garbage value seen for "Downlink Packts in Buffer" for ipv6 frag traffic

Last Modified

Dec 26, 2016

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

17.0.0.56354

Description (partial)

Symptom:
"Downlink Packets in Buffer" counter seen out of syn in IPv6 fragmented packet scenario, when packet is buffered at DCCA.

Conditions:
This issue is very very specific and happening in following condition.

1. IPv6 pacekt, fragmented pacekt
2. DCCA enabled and quota is not available for this packet.
3. Flow on dedicated bearer with tft configured as tcp.

Only in this particular case, IPv6 fragmented packet is not received in correct bearer, and due to this flow is moving from dedicated bearer to default bearer.
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