Veritas-bu

Re: [Veritas-bu] Very slow client

2007-08-17 09:48:33
Subject: Re: [Veritas-bu] Very slow client
From: "Paul Keating" <pkeating AT bank-banque-canada DOT ca>
To: "Kennedy, Cameron" <Cameron.Kennedy AT bovislendlease DOT com>, <veritas-bu AT mailman.eng.auburn DOT edu>
Date: Fri, 17 Aug 2007 09:29:53 -0400
any client set to auto detect is only very slow if there is a misconfiguration in the chain.
 
auto neg has worked flawlessly for years assuming both sides are configured to auto.
The documented (IEEE 802.3??) behaviour if one side is auto and the other side hardcoded is for the auto neg configured side to go to 100Mb/s Half Duplex. (lowest common denominator.)
Since the "hardcoded" side is usually set to FULL, you end up with a duplex mismatch which kills performance.
 
If you've still got old Sun HME cards ardoun, there is some auto-meg issues with those, in combination with some older Cisco versions, but for the most part, Auto is where it's at.
Auto is actually a requirement for proper flow control in GigE.
 
Paul
 
--
-----Original Message-----
From: veritas-bu-bounces AT mailman.eng.auburn DOT edu [mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of Kennedy, Cameron
Sent: August 15, 2007 7:49 PM
To: Deiter, Scott; veritas-bu AT mailman.eng.auburn DOT edu
Subject: Re: [Veritas-bu] Very slow client

did you check network settings on the NIC? Is it set to 100/Full (or whatever your network standard is)? I find any Windows clients set to auto detect run very slow.
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