Half Duplex and Zero Copy IP

Subba Rao (subba9@home.com)
Fri, 10 Aug 2001 09:53:13 +0000

Hello,

I have 2 3Com NICs on my system. They are 3c905C Tornado PCI cards.
The drivers are compiled into the kernel (Slackware 8.0 with kernel 2.4.7).

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
subba9@home.com
http://members.home.net/subba9/


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