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On Sun, 23 Jan 2000, Julian Anastasov wrote:
> > Do you know if a 100Mpbs NIC is supposed to be able to receive at 100Mbps
> > at the same time as it is sending 100Mpbs? Does an 8-port switch have 4
> > pairs of connections in both directions at 100Mbps (total 800Mpbs) or only
> > 4 connections with each connection being in 1 direction (total 400Mbps)?
>
> I know that usually the default setting for the cards is
> "autoselect" but if the autonegotiation is not possible it can be forced
> via module option. You can check your driver for more info and to inspect
> the driver output with dmesg.
it says "full duplex"
> When using full duplex LAN switch the collisions are not detected
> from the card and theoretically it is possible to be achieved 2x100Mbps
> per each connected to the switch card: 100Mbps in and 100Mbps out.
OK good to know.
> From
> the results I assume that your cards are in full duplex mode, i.e. 120Mbps
> input+output. What speed shows a ftp transfer on idle machines: ~11MB/s ?
> Get the result from the second test, i.e. we want the transferred file to
> be in the cache.
yes I understand the role of the cache. must do this test too.
> The 3th test can be ftp in both directions to test the
> full duplex speed between two hosts.
I assume that's 2 client windows, one uploading, one downloading
(will reply to your "hints" sometime)
Joe
--
Joseph Mack mack@xxxxxxxxxxx
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