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Cisco Bug: CSCur27458 - IRB traffic is not forwarded correctly for certain groups

Last Modified

May 12, 2018

Products (7)

  • Cisco ASR 9000 Series Aggregation Services Routers
  • Cisco ASR 9922 Router
  • Cisco ASR 9010 Router
  • Cisco ASR 9904 Router
  • Cisco ASR 9006 Router
  • Cisco ASR 9001 Router
  • Cisco ASR 9912 Router

Known Affected Releases


Description (partial)

IRB traffic loss due to RSV_DROP_L2MC_NO_OLIST

1. 3rd octet of the multicast group is 1 or 2 (such as
2. One of the following scenarios holds (which means PW are used or split-horizon is configured):
    - SHG1 used; EC: N, EC1: N, EC2: 0
    - SHG2 used; EC: N, EC1: N, EC2: 0
    - SHG2 used; EC: N, EC1: 0, EC2: N

where EC = total olist count, EC1 = olist count for SHG1 and EC2 = olist count for SHG2.
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
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