> One of the interfaces will be used as a sniffer interface (without IP address)
> and a very high traffic pipes. I do not wish to loose any packets coming to this
> interface. Is it better if I initialize the interface in HALF DUPLEX mode? If yes,
> how do I set the card to HALF DUPLEX mode? How can I find out the HW (NIC) settings
> on the system?
Half duplex mode will only make your line slower, it has no benefit.
> Another question about 3Com NICs, do they perform zero-copy IP? I read that
> the performance improves a lot WITHOUT zero-copy IP.
The sniffer zero copy implementation as implemented in some libpcaps
does not depend on any special NIC support; it should work with any.
-Andi
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