[c-nsp] Speed Issues

[Jim McBurnett]

Is there a PIX in the mix anywhere?

I had the same issue recently..

The PIX was the default gateway for the network inside.
And a when that was swapped with the 3750 running as a L3 switch, things
sped up..

Maybe make the 3550 run as a L3 switch and then swap IP's with the
router if there is no PIX involved..

For the life of me I do not see how this affected the performance but it
did!!!!

J 

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Case Hugo
Sent: Thursday, February 02, 2006 4:17 PM
To: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] Speed Issues

The reason I hard-set the speed and duplex is that that was recommended
in another newsgroup.

I just set the server to 100 / full and the speed increased from 80kbps
to
1.5 mbps which is an inprovement but still not the 5-8 mbps that it
should 
be.   But at least people should be able to download their attachments
with 
out problems.

Thanks for all the help




----- Original Message -----
From: "John Neiberger" <John.Neiberger at efirstbank.com>
To: <cisco-nsp at puck.nether.net>
Sent: Thursday, February 02, 2006 11:19 AM
Subject: Re: [c-nsp] Speed Issues


>>>> "Justin M. Streiner" <streiner at cluebyfour.org> 2/2/06 11:51:42 AM
>>>>
>>On Thu, 2 Feb 2006, John Neiberger wrote:
>>
>>> There's your problem. Hard-setting your speed and duplex is a very
> bad
>>> idea. In this particular case, I would bet that the interface facing
> the
>>> server is seeing a lot of input errors and the interface on the
> server,
>>> if you could see the stats, is seeing late collisions. The problem
> is
>>> that some devices still participate in auto negotiation even when
> you
>>> have manually configured the speed and duplex. If they don't detect
> an
>>> autonegotiating link partner they will assume that they're connected
> to
>>> a hub and drop back to half duplex, which results in a duplex
> mismatch.
>>>
>>> Configure *both* sides to AUTO and all should be well.
>>
>>Or configure the NIC in the server to run at 100/full.  It's been my
>>experience that speed/duplex autonegotiation doesn't always produce
> the
>>best results.
>
> I believe that is his problem. Unless I misread his post, he already
> has it hard-set to 100/full and he's probably getting a duplex
mismatch
> for the reasons I stated.
>
> John
> --
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