Re: Routing with Linux
On Thu, Mar 06, 2003 at 04:01:29PM +0100, Volker Tanger wrote:
> Greetings!
>
> On Thu, 06 Mar 2003 14:38:08 +0100
> "Uwe A. P. Wuerdinger" <wuerdinger@x-tec.de> wrote:
> >
> > Depens on the harware.
> > We got 750 mbits on a single box with a 2 channel intel gigabit card
> > (Intel PRO/1000 MT Dual Port (64bit/66MHZ PCI) in a Fujits-Siemens
> > PRIMERGY L200 with 2 Intel PIII (1.40 GHZ) and 2 GB SDRAM.
>
> The important fact is the "(64bit/66MHZ PCI)" part - as standard PCI
> (32bit@33MHz) will not transfer much more than 1Gbit/s. So two Gbit/s
> cards on the same Standard PCI bus would only let ~500Mbit/s pass
> (half-duplex). Even the fast+wide PCI barely is just fast enough for a
> full Gbit/s line run full-duplex.
Last time I checked (several months ago), no one made a GigE card fast
enough to actually do 1Gb/s; the best card could do about 425 Mb/s. Has
this changed, or are you arguing theoreticals?
--
Nathan Norman - Incanus Networking mailto:nnorman@incanus.net
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