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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)

# 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.

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