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Cisco Bug: CSCta03980 - PIMSN:No multicast data flood with IGMPSN disable & PIMSN enabled

Last Modified

Sep 20, 2015

Products (1)

  • Cisco Catalyst 6000 Series Switches

Known Affected Releases


Description (partial)


Multicast packets are not bridged to local receivers that send IGMP joins.


This happens when PIM snooping is on and IGMP snooping is off on a VLAN 
(allowed on Sup2T). WIthout IGMP snooping, local membership will not be 
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
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  • Known Fixed Releases
  • Related Community Discussions
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