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Cisco Bug: CSCtb40061 - Pkts recd on VLAN with IGMP sn are sent to the CPU when SVI is shut

Last Modified

Jan 29, 2017

Products (1)

  • Cisco Catalyst 4000 Series Switches

Known Affected Releases

12.2(52)SG

Description (partial)

Symptom:
 Packets received on a VLAN with IGMP snooping enabled are sent to the CPU when
the SVI is shut
 
 
 
 Conditions:
 When the SVI is administratively shut, packets received on the L2 interface
cause high CPU (99%). When IGMP snooping is disabled on the interface, CPU
drops back to normal levels.
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  • Status
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