From: Dillon Yang (dillony@gmail.com)
Date: Tue Apr 12 2005 - 12:02:27 GMT-3
Hi, Wayne:
Its simple. Just test it by using NetBIOS. If you want an accurate
speed, you should use a single huge file that may be 640MB or larger.
Try it.
HTH
dillon
On Apr 12, 2005 10:55 PM, Wayne Bellward <wbellward@gmail.com> wrote:
> Hi Dillon,
>
> The aim of the scenario was to emulate a LES10 circuit, hence the 10Mb Full
> Duplex. I have now spoken to a to a few people and it would seem as Chris
> Larson points out tcp based file transfer is a poor way to measure
> performance. Someone has recommended TTCP utility
> www.pcausa.com/Utilities/pcattcp.htm either way this is a subject I'm going
> to have to do some reading up on. If anyone has any recommendations I'd be
> glad to hear them.
>
> Many Thanks
>
>
> On Apr 12, 2005 2:51 PM, Dillon Yang <dillony@gmail.com> wrote:
> > Hi, Wayne:
> >
> > I can not understand the "10Mb Full duplex crossover" on 3550! Maybe
> > you used a wrong cabling that caused the speed down. You'd show the
> > interface to know whether there is lost packets.
> >
> > HTH
> > dillon
> >
> >
> > On Apr 12, 2005 7:11 PM, Wayne Bellward <wbellward@gmail.com> wrote:
> > > Hi All,
> > >
> > > I have two 3550EMI's connected via a 10Mb Full duplex crossover, the
> > > link is a 802.1q trunk and I only have about four VLANS running. When
> > > I do an FTP of a 10Mb binary file between two hosts one on each switch
> > > in different VLANS I get file transfer speeds of about 50KBs. If I
> > > put the hosts on the same 3550 I get transfer speeds of about 85KBs,
> > > CEF is enabled but either way I would expect to get transfer speeds
> > > much greater than those I am getting.
> > >
> > > The 3550 has a 8.8Gbps switch fabric and a throughput of 4.4Gbps can
> > > anyone explain to me why this is happening? I don't think there is a
> > > problem with the switches or the hosts but get the impression I am
> > > missing a fundamental aspect of switching.
> > >
> > > Many Thanks,
> > >
> > > Wayne
> > >
> > >
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