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Cisco Bug: CSCvu25670 - Ethernet SLA reporting drops when loss measurement is enabled on 2 interfaces on same Tomahawk NP

Last Modified

Sep 29, 2020

Products (11)

  • Cisco ASR 9000 Series Aggregation Services Routers
  • Cisco ASR 9910 Router
  • Cisco ASR 9922 Router
  • Cisco IOS XR Software
  • Cisco ASR 9010 Router
  • Cisco ASR 9904 Router
  • Cisco ASR 9006 Router
  • Cisco ASR 9901 Router
  • Cisco ASR 9001 Router
  • Cisco ASR 9906 Router
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Known Affected Releases


Description (partial)

Ethernet SLA reporting artificial drops when loss measurement "loss measurement counters aggregate" command is enabled on 2 interfaces on same Tomahawk NP.

Issue is visible without any transit or control traffic (besides of CFM) on the interfaces.

Packets from the 2nd interface are reported as Sent and Lost on 1st interface.

Ethernet SLA configured with LMM
Tomahawk type LC on receiver side
At least 2 interfaces on same NP with "loss measurement counters aggregate" configured
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