[vortex] Half Duplex and Zero Copy IP

Subba Rao subba9@home.com
Thu, 9 Aug 2001 12:43:34 +0000


I have 2 3Com NICs on my system. They are 3c905C Tornado PCI cards.
The drivers are compiled into the kernel.

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?

Another question about 3Com NICs, do they perform zero-copy IP? I read that
the performance improves a lot WITHOUT zero-copy IP.

Thanks for any info.

Subba Rao

GPG public key ID 27FC9217
Key fingerprint = 2B4C 498E 1860 5A2B 6570  5852 7527 882A 27FC 9217