SG300-28P identifies itself as a duplicate IGMP Querier IP address
25-Jun-2015 08:44:45 %BRG_IGMP_QRR-W-DUPLICATE_IP: Duplicate IGMP Querier IP address 192.168.142.1 detected on VLAN 1. Remote MAC address is 34:a8:4e:0d:34:55.
I am seeing this regularly on this SG300-28P switch. These IP and MAC addresses belongs to the switch itself and it is the IGMP querier. I don't understand why the switch is identifying itself as a duplicate - has it got split personality disorder?? Have I messed up on the configuration somewhere?
There's no mrouter defined, but according to the CLI guide, by default "Learning pim-dvmrp is enabled."
Before I configured IGMP snooping, I used Wireshark to determine that multicast packets were being flooded to all ports on each switch, which was the reason for configuring IGMP snooping in the first place.
Bonjour is also enabled on the switch, but I've never really understood what it does - I just know it's enabled by default.
bonjour interface range vlan 1
I tried moving the IGMP snooping to another switch, but I get the same message there too. Definitely no duplicate IP addresses on the network, which was what I thought the message was telling me at first.
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