From: "Matt Heaton" Subject: Re: performance question Date: Tue, 1 Apr 2003 09:22:13 -0700 Sender: nfs-admin@lists.sourceforge.net Message-ID: <35ff01c2f86a$da9c1880$6601a8c0@userl3x55qxqed> References: <1049188686.19334.20.camel@deskpro02><20030401153950.27556.qmail@pour.midcoast.com> <20030401180633.05170a7d.philippe.gramoulle@mmania.com> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-15" Return-path: Received: from sccrmhc01.attbi.com ([204.127.202.61]) by sc8-sf-list1.sourceforge.net with esmtp (Exim 3.31-VA-mm2 #1 (Debian)) id 190OZJ-00068x-00 for ; Tue, 01 Apr 2003 08:25:02 -0800 To: =?ISO-8859-15?Q?Philippe_Gramoull=E9?= , Errors-To: nfs-admin@lists.sourceforge.net List-Help: List-Post: List-Subscribe: , List-Id: Discussion of NFS under Linux development, interoperability, and testing. List-Unsubscribe: , List-Archive: I just have to respond to this. I must respectfully disagree. Autonegotiation is tolerable at best. With certain equiptment it works flawlessly, but MANY brands autonegotiate correct speeds and duplex, but still exhibit 2-3% packetloss or intermittant latency (high pings times etc). A perfect example is my cisco 2940 catalyst switch and my alteon/nortel 180e (layer 2-7 switch). Both switches are high quality and work well, but if you link them up with autonegiation you will have problems. It will detect proper speeds and duplex, but has speed problems and packet loss. When contacting BOTH cisco and nortel support they both said autonegiation is bad news and should be used only to get things up and going. Cisco said if all the products were cisco then no problem, just as nortel said the same thing. Just my 2 cents worth, but I have seen this problem on more than 5 devices on my own network alone. L8r... Matt ----- Original Message ----- From: "Philippe Gramoull?" To: Sent: Tuesday, April 01, 2003 9:06 AM Subject: Re: [NFS] performance question Hi, Unless you're using an old exotic Cisco switch, i don't think you should do this, IMHO. We've had the worst problems doing that and since we use autoneg ( with intel EEpro100 card) we never had a single problem ever since. Thanks, Philippe -- Philippe Gramoull? philippe.gramoulle@mmania.com Lycos Europe - NOC France On Tue, 1 Apr 2003 10:39:50 -0500 (EST) jp@pour.midcoast.com wrote: | I always hard-set ethernet | settings because I don't trust autonegotiation under all circumstances. ------------------------------------------------------- This SF.net email is sponsored by: ValueWeb: Dedicated Hosting for just $79/mo with 500 GB of bandwidth! No other company gives more support or power for your dedicated server http://click.atdmt.com/AFF/go/sdnxxaff00300020aff/direct/01/ _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs ------------------------------------------------------- This SF.net email is sponsored by: ValueWeb: Dedicated Hosting for just $79/mo with 500 GB of bandwidth! No other company gives more support or power for your dedicated server http://click.atdmt.com/AFF/go/sdnxxaff00300020aff/direct/01/ _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs