Symptom
IGMP proxy reports are not being generated from ACI leaf switches where Mrouters are connected. According to the IGMP trace, the process claims that it is sending the IGMP proxy reports:
leaf102# show ip igmp snooping event-history vlan | grep "Building proxy report"
2018 Sep 18 19:19:23.966680 igmp [12570]: TID 13216:igmp_snoop_send_fabric_group_proxy_report:1106: SN: Building proxy report for group 227.227.1.1
2018 Sep 18 19:17:26.191063 igmp [12570]: TID 13216:igmp_snoop_send_fabric_group_proxy_report:1106: SN: Building proxy report for group 227.227.1.1
Conditions
PIM was enabled on the Bridge Domain and then the configuration was removed when the gateway was migrated from ACI to an external router.
Workaround
delete the bridge domain and recreate it.
clean reload the leaf switch by issuing "acidiag touch clean" from the leaf CLI. And then reload the device.
Further Problem Description