I could not agree more. Knowing that OSI model and following it - would really save many folks a ton of time.
On Dec 5, 2010, at 11:34 PM, Justin Wilson wrote: > It’s across a wide variety of clients. My guys always check layer1 before > they do much of anything. We fixed two just yesterday which were bad patch > cables. > > We always reference the following article when we bring a new guy on: > > http://www.iphelp.ru/faq/24/ch16lev1sec1.html > > I have seen guys spend hours troubleshooting configurations that have not > changed in 6 months, do memory tests, and all sorts of things. Then a jumper > is replaced and all is good. My only point is start at the bottom of the OSI > model and work up if nothing has changed. > > Justin > > -- > Justin Wilson <[email protected]> > Aol & Yahoo IM: j2sw > http://www.mtin.net/blog – xISP News > http://www.twitter.com/j2sw – Follow me on Twitter > Wisp Consulting – Tower Climbing – Network Support > > > > From: Josh Luthman <[email protected]> > Reply-To: WISPA General List <[email protected]> > Date: Sun, 5 Dec 2010 22:23:10 -0500 > To: WISPA General List <[email protected]> > Subject: Re: [WISPA] You would think after 20 years we have this down. > > I don't think 1% accounts for those in my experience. Wonder what you're > doing differently. > > On Dec 5, 2010 9:52 PM, "Justin Wilson" <[email protected]> wrote: > > In my experience the first thing we always check is layer1. 80+% of our > > logged tickets can be traced down to bad cat-5, bad crimps, poor patch > > cables, etc. > > > > Justin > > -- > > Justin Wilson <[email protected]> > > Aol & Yahoo IM: j2sw > > http://www.mtin.net/blog – xISP News > > http://www.twitter.com/j2sw – Follow me on Twitter > > Wisp Consulting – Tower Climbing – Network Support > > > > > > > > > > From: Rubens Kuhl <[email protected]> > > Reply-To: WISPA General List <[email protected]> > > Date: Mon, 6 Dec 2010 00:35:52 -0200 > > To: WISPA General List <[email protected]> > > Subject: Re: [WISPA] You would think after 20 years we have this down. > > > >> We recently upgraded a link and started having some packet loss. Looking > >> at > >> the manged switch, it was obvious the CMM on that tower was getting > >> ethernet > >> errors. Auto negotiation on GigE switches is flaky as hell. This is the > >> second time in a month I've had to hard code both ends. This has occurred > >> on both Cisco and HP Procurve hardware. > > > > GigE auto-neg not working is a hint pointing to bad cable, > > interference and/or defective hardware. Unlike Fast-Eth, Gig-E autoneg > > works and you lose link quality monitoring by disabling it. > > > > > > > > Rubens > > > > > > ---------------------------------------------------------------------------- > > ---- > > WISPA Wants You! Join today! > > http://signup.wispa.org/ > > ---------------------------------------------------------------------------- > > ---- > > > > WISPA Wireless List: [email protected] > > > > Subscribe/Unsubscribe: > > http://lists.wispa.org/mailman/listinfo/wireless > > > > Archives: http://lists.wispa.org/pipermail/wireless/ > > > > > > > > -------------------------------------------------------------------------------- > WISPA Wants You! Join today! > http://signup.wispa.org/ > -------------------------------------------------------------------------------- > > WISPA Wireless List: [email protected] > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > > > -------------------------------------------------------------------------------- > WISPA Wants You! Join today! > http://signup.wispa.org/ > -------------------------------------------------------------------------------- > > WISPA Wireless List: [email protected] > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ _____________________________________________________________________________________ Glenn Kelley | Principal | HostMedic |www.HostMedic.com Email: [email protected] Pplease don't print this e-mail unless you really need to.
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