Question : Ethereal sniffer

I just downloaded and ran the Ethereal sniffer I don't see any real problems except I do see 3 mac addresses that are sending IPX SAP general Queries.  Is there any way to find those Mac Addresses find what machine the belong to?  Also with Ethereal can you tell how much traffic your network is running it seems very slow lately figured it was one of the viruses like Sasser but we are all patached and scanned.

Thanks,
Michael

Answer : Ethereal sniffer

Managed switches, or unplugging one at a time, is about the only way to go.