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Cisco Bug: CSCvu99619 - Modifying 55d1 DS Join-group with invalid addr, CBR Rejects config but still affects 55d1 DS Traffic

Last Modified

Aug 18, 2020

Products (4)

  • Cisco cBR Series Converged Broadband Routers
  • Cisco Catalyst 9800-L-C Wireless Controller
  • Cisco Catalyst 9800-L-F Wireless Controller
  • Cisco cBR-8 Converged Broadband Router

Known Affected Releases


Description (partial)

In a working 55-1 Setup,  try to modify the IGMP join group to reserved mulitcast address like to etc, config gets rejected. But the 55-1 downstream traffic from cbr8 gets stopped.

This issue occurs only if IGMP join group is modified to reserved Multicast Group ( to .
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