I've searched through the forums and done some reading but have not been able to resolve a duplicate IP address error that I'm getting on numerous SG 300-10's.
The message I'm seeing is:
10-Jun-2014 11:25:57 :%IPADTBL-N-IPDUPLICATE: Duplicate IP address 192.168.20.223 from MAC 68:86:a7:4f:43:18 was detected on VLAN 6, port gi9, aggregated (3)
10-Jun-2014 11:25:01 :%IPADTBL-N-IPDUPLICATE: Duplicate IP address 192.168.20.223 from MAC 68:86:a7:4f:4d:99 was detected on VLAN 6, port gi9, aggregated (3)
Both MAC addresses are trunk ports on 2960's I've compared the config of the 2 2960's with others that we have in production and cannot see anything different (excluding the obvious IP / name). The SG 300's and 2960's all uplink to our 4500 core switches.
The duplicate IP address in the message is always the IP address of the SG 300 that the message appears on, and I do not see any messages on the 2960's.
I'm just wondering if anyone has any pointers of where I should be looking next.....