Freebsd IP Forwarding performance (question, and some info)
[7-stable, current, em, smp]
alex.wilkinson at dsto.defence.gov.au
Tue Jul 1 01:07:49 UTC 2008
0n Tue, Jul 01, 2008 at 03:00:31AM +0200, Ingo Flaschberger wrote:
>> >OK, I setup 2 boxes on either end of a RELENG_7 box from about May
>> >7th just now, to see with 2 boxes blasting across it how it would
>> >work. *However*, this is with no firewall loaded and, I must enable
>> >ip fast forwarding. Without that enabled, the box just falls over.
>> What is "ip fast forwarding" ?
>instead of copying the while ip packet into system memory, only the ip
>header is copyied and then in a "fast" path determined if it could be fast
>if possible, a ned header is created at the other network-cards-buffer
>and the ip-data is copied from network-card-buffer to network-card-buffer
So how does one enable "ip fast forwarding" on FreeBSD ?
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