[c-nsp] Fibre link flapping

[Christopher J. Wargaski]

Hello Ambedkar--

   Look for any tight bends in your fiber. Rule of thumb is do not make the
bend any tighter than a soda can.

   Also, you may want to find yourself a can of compressed air and a nice
soft cloth for cleaning eyeglasses. Remove the fiber from the GBIC/SFP,
blow any dust off of the tip and lightly wipe it with the cloth.

   Of course, there are more professional cleaning kits and procedures (
http://tinyurl.com/7ryqasp)


cjw


Date: Thu, 16 Feb 2012 12:42:50 +0530
> From: Ambedkar <p.ambedkar at gmail.com>
> To: cisco-nsp at puck.nether.net
> Subject: [c-nsp] Fibre link flapping
> Message-ID:
>        <CAPRC=AADwg4hA8qtGoX57Uooa_fa4j5G-z0oEZt2tEM8PZhdKg at mail.gmail.com
> >
> Content-Type: text/plain; charset=ISO-8859-1
>
> Hi,
> There is a problem in our network. Two switches are directly connected via
> Multimode fibre, the link is working fine. But sometimes the link is down
> in switch-A for 7 seconds and becoming UP. The logging messages shows that
> link is down and UP in switch-A.  There is no err-disable messages
> anywhere.
>
> But there is no logging message regarding up/down in respective switch-B.
>
> Unable to understand what is the problem.
>
> Please give suggestions.
>
> thanks,
> Ambi
>
>
>