[c-nsp] Catalyst/Fiber Connectivity Issues

[Dan Sabau]

Try to see with "sh int " if it doesn't get disabled due to some errors
on the 3750, if so you will see the cause at "sh int " and you can
disable the error disable with "no errdisable detect cause all" or fix
the problem.


Felix Nkansah wrote:
> Hi,
>
> A client of mine has a fiber backbone between two buildings on their campus.
>
>
> The fiber terminates on a Catalyst 6509 (at the data centre) and a Catalyst
> 3750 at the other end. Users at the far-end connect to servers located at
> the data center over this fiber.
>
> This connection has been working fine for the past 2 years, until a recent
> problem came up.
>
> For two weeks now, the usual occurrence is for the fiber link to stop
> passing traffic while working until the 3750 is rebooted or the fiber
> connectors removed from the SFP port and replugged.
>
> Meanwhile, the interface and line protocol remain UP on both switches during
> this abnormal behaviour. There are also no log messages occurring.
> Everything look fine on both switches. They just wouldnt pass traffic. The
> problem occurs about twice each day.
>
> It's difficult diagnosing the problem now. I need help pls.
>
> Regards,
>
> Felix
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>   

-- 
Dan Sabau
TBM Invest
Manager Tehnic Date
0740078983


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