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Cisco Bug: CSCvv01962 - Oakla UL packet Drops, User Plane Function (UPF)

Last Modified

Sep 29, 2020

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

21.15.42 21.15.43 21.18.6 21.20.3

Description (partial)

Symptom:
# show subscribers user-plane-only full callid

  input pkts: 329969                              output pkts: 447318     
  input bytes: 206113252                          output bytes: 490125763  
  input bytes dropped: 8022962                    output bytes dropped: 72       
  input pkts dropped: 7179                        output pkts dropped: 1

We seen drops in uplink due to error seen in logs:
HTTP parse error in request: packet not analyzed because error in previous pkt

Error packets like this are dropped and not fwd to VPP.

Issue noticed on StarOs 21.15.42.

Conditions:
Issue will be seen when L7 analysis for HTTP is enabled and HTTP Parsing fails leading to permanent failure.
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