Does anyone know the root of "RX MAC Discard Frame" only errors on a gigabitethernet controller?
It does help mentioning the hardware in question, thanks.
I did a little digging and it seems you may ignore this message as it's the result of the router receiving multicast packets on that interface w/o having multicast enabled.
I'm assuming this 7200 router has a NPE-G2?
See CSCsf32623 at: