Multicast Messages

[londint]

I get these messages which I have looked up on the Cisco site and have identifed the sources.

I have also done a Data Capture and found out that it is the default gateway (MSFC) on one of the affected servers that is sending to the MAC Address as a destination Source (224.0.0.1) and the other servers did not have the MAC address in place.

How do I go about rectifying this?

Thanks

2004 Jul 06 04:51:06 BST +01:00 %MCAST-2-IGMP_ADDRAL:IGMP: Address Aliasing for 01-00-5e-00-00-01

2004 Jul 06 04:51:06 BST +01:00 %MCAST-2-IGMP_FALLBACK:IGMP: Running in FALL BACK mode

2004 Jul 06 04:51:06 BST +01:00 %MCAST-2-IGMP_ADDRALDETAILS:IGMP: Multicast address aliasing: From 02-00-20-c5-41-b8 (?.?.?.?) on ?/? to 01-00-5e-00-00-01

[skarundi]

The MSFC is not the problem...One of the PCs or multiple PCs in your network are sending IGMP joins to the 01-00-5e-00-00-01 MAC address. One of the PCs responsible has a MAC address of 02-00-20-c5-41-b8.. The log message says so.

[londint]

Thanks

Yes I know and I have found the Server in question. But looking at the server and doing a snoop does not show that any IGMP join is being sent out from that Interface.