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Cisco Bug: CSCul54537 - ASR9K SIP-700 sends RTP unicast traffic out of order in MPLS L3VPN Setup

Last Modified

May 11, 2018

Products (6)

  • Cisco ASR 9000 Series Aggregation Services Routers
  • Cisco IOS XR Software
  • Cisco ASR 9922 Router
  • Cisco ASR 9010 Router
  • Cisco ASR 9006 Router
  • Cisco ASR 9001 Router

Known Affected Releases


Description (partial)

In a ASR9K SIP-700 Linecard, RTP Unicast packets with MPLS encapsulation can be forwarded out of order, with the smaller packet over taking the bigger packet occasionally. 

The out of order packets can destabilize the Video applications like Telepresence from functioning correctly.

Only packets with MPLS Encapsulation with SIP-700 as Egress LC would hit the issue.
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