Just got finished with a weird problem and the fix was auto negotiation on a 7200/w PA-2FE-TX. Problem was customer was seeing many CRC errors incrmenting on FE. Unfortunately another group within our organization monitors this customers network and one thing they monitor are input and output errors. For some reason which I need to figure out the CRCs were counting up but the input errors remained 0 therefore never alerting out monitoring group.
I can come up with examples of many differant scenerios, as Priscilla mentions, unfortunately it's somewhat of a crapshoot!! Dave Priscilla Oppenheimer wrote: > > [EMAIL PROTECTED] wrote: > > > > From my experience in networking I made my mind that manual > > configuration > > of speed and mode is the better choice. > > > > Cisco recommends fixed configuration too. > > > > For my surprise, 802.3 specification states: > > > > "It is strongly recommended that Auto-Negotiation be used ..." > > "Manual configuration is not recommended" > > > > That sounds weird for me. Any thoughts? > > Of course, they say that. They invented it. :-) They couldn't know that it > wouldn't really work in the real world. Unlike IETF, I don't think IEEE has > strict rules about there needing to be implementations that interoperate > before a standard is declared finished. > > Actually, some of the problems come about because some vendors started > implementing auto-negotation before the standard came out and did things a > little differently. That always happens. > > There are some cases, by the way, where manual configuration won't work > either! I've run into that. > > In general, the problems are starting to go away, however. The vendors are > mostly doing things in an ineroperable manner now and auto-negotiation may > be safe to use again, at least from my limited experience. > _______________________________ > > Priscilla Oppenheimer > www.troubleshootingnetworks.com > www.priscilla.com -- David Madland CCIE# 2016 Sr. Network Engineer Qwest Communications 612-664-3367 "You don't make the poor richer by making the rich poorer." --Winston Churchill Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=58931&t=58904 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
