It is an interesting frame shown in the capture. If you look at the destination MAC address it certainly looks like an IP multicast frame. The first part of the address 01:00:5e is the reserved OUI for IP multicast. The last part of the address indicates that the destination IP address would have been x.1.1.250 or x.129.1.250 (where x is in the range 224 through 239).
However the source MAC address appears to be invalid since it is all 0s. This makes identifying the source quite a problem. Was this capture on a SPAN port? If so what was the source of the SPAN session?
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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