Cisco Bug: CSCsy82121 - IGMP Source only not working due to MC_CAP not set
Nov 05, 2018
- Cisco Catalyst 6000 Series Switches
Known Affected Releases
Symptoms: Flooding of multicast traffic can be seen on source-only multicast networks. Conditions: The symptom is observed on a Cisco Catalyst 6500 series switch that is running a SUP720 and with Cisco IOS SXF and SXH Releases. When the issue occurs, the <CmdBold>show mac-address multicast<noCmdBold> command does not show the group to be installed. It is expected that the mrouter ports installed would be seen so that traffic is directed upstream. Once an IGMP join is received from a receiver, the group will not be source-only and will be installed in the MAC table.
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Bug Details Include
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