Guest

Preview Tool

Cisco Bug: CSCvt14696 - media breaks when rtp-conformance is enabled for SIP inspection

Last Modified

Apr 18, 2020

Products (1)

  • Cisco ASA 5500-X Series Firewalls

Known Affected Releases

9.8(2.237)

Description (partial)

Symptom:
Voice/Video call through ASA works for 15 minutes.
At 15 minutes a SIP re-invite is sent and video stops working but audio remains up
ASP drop capture shows:

   1: 09:58:32.558046       802.1Q vlan#302 P0 x.x.x.x.16696 > y.y.y.y.16984:  udp 23 Drop-reason: (inspect-rtp-ssrc-mismatch) Inspect RTP SSRC mismatch

SIP DEBUGS show:
SIP::ERROR: No space to store media x.x.x.x/0 in sip session
SIP::RTP/RTCP conn not allocated for y.y.y.y/port to x.x.x.x

Conditions:
inspect SIP configured with rtp-conformance option enabled

policy-map type inspect sip testSIP
description test
parameters
rtp-conformance
max-forwards-validation action drop log
Bug details contain sensitive information and therefore require a Cisco.com account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.