Not sure whether it's in the books, but the classroom process for learning for CCNA advises that the best approach for all problems is to work up the OSI model, starting and Physical and going on up through to Application as the very last gasp. For physical, always start with a reseat of the cables wherever possible, etc. etc.
The more those skills have been put into practice the better instincts you get and you know you can write off certain layers for certain problems, but still occasionally I find myself tripped up looking at layer 4 when it's layer 1. Paul On 12/01/2010 11:20 AM, Brad Knowles wrote: > On Dec 1, 2010, at 2:16 PM, John BORIS wrote: > >> Yes you look to the cable because it is the cheapest component, >> lightest and easy to replace. You can stash a ton of patch cords but >> switches and modules take space and gather dust. > You also check the cable first because it's the thing that is most likely to > go bad/wrong. Cable connectors have always been problematical, at best. > > Like, the guy who designed the AUI sliding cable lock (all those years back) > has since publicly repented and wished that they had gone with screws > instead. And who the hell ever thought it was a good idea to put a crimp > connector on teflon-coated ThinNet cable? And the woes of poorly crimped RJ > connectors has gotten beaten to death quite recently. > > Rule #1 is "Check the cable" for a good reason, not just because it's the > cheapest and easiest thing to check. > > -- > Brad Knowles<[email protected]> > LinkedIn Profile:<http://tinyurl.com/y8kpxu> > > _______________________________________________ > Tech mailing list > [email protected] > https://lists.lopsa.org/cgi-bin/mailman/listinfo/tech > This list provided by the League of Professional System Administrators > http://lopsa.org/ _______________________________________________ Tech mailing list [email protected] https://lists.lopsa.org/cgi-bin/mailman/listinfo/tech This list provided by the League of Professional System Administrators http://lopsa.org/
