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Cisco Bug: CSCte62453 - shut & no-shut on IGMP join interface causes SSM VRF mroute disappear

Last Modified

Feb 28, 2018

Products (1)

  • Cisco IOS

Known Affected Releases

15.0(1)M

Description (partial)

Symptoms: Performing a shut and no-shut on a subinterface with igmp-join 
causes SSM VRF mroute to disappear.

Conditions: This symptom is observed when SSM VRF mroute is present in the 
table:
ce#show ip mroute vrf management
(Src 1  IP, Grp IP), 00:10:48/stopped, flags: sPLTXI
  Incoming interface: FastEthernet4.3, RPF nbr 10.32.178.117
  Outgoing interface list: Null
(Src 2 Ip , Grp IP), 01:46:19/stopped, flags: sPLTXI
  Incoming interface: FastEthernet4.3, RPF nbr 10.32.178.117
  Outgoing interface list: Null

In addition, the interface is configured as follows: 
int FastEthernet4.3
 encapsulation dot1Q 33
 ip vrf forwarding management
 ip address <IP addr>  255.255.255.252
 ip pim sparse-mode
 ip igmp join-group <group addr> source 10.32.178.56
 ip igmp join-group <group addr> source 10.32.178.23
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Bug Details Include

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