[c-nsp] Unsupported SFP on Cisco 2960

[Scott Granados]

The only problem you're likely to have is with your wallet if you buy Cisco branded optics.:)

Others may disagree but I have never had any problem with 3rd party transceivers in lots of products including the 2900 series.

On Jul 25, 2012, at 2:02 PM, pamela pomary <ppomary at gmail.com> wrote:

> Hello Folks,
> 
> I have a peculiar problem. I have followed postings in the forum and I
> believe your experience with Cisco networks will help answer my question.
> 
> I have a Cisco 2960 with Gigabit SFP module. I connected a third party
> addon SFP GBIC to 2960 switch and I get the following error that disables
> the interface.
> 
> *Mar 16 21:05:15.720: %GBIC_SECURITY_CRYPT-4-VN_DATA_CRC_ERROR: GBIC in
> port Gi0/2 has bad crc
> *Mar 16 21:05:15.720: %PM-4-ERR_DISABLE: gbic-invalid error detected on
> Gi0/2, putting Gi0/2 in err-disable state
> 
> After checking online I found these two command lines that corrects the
> error
> on the Cisco 2960 switch and brings the interface up.
> 
> 1) no errdisable detect cause gbic-invalid
> 2) service unsupported-transceiver
> 
> Cisco 2960 switch however reported a warning on entering the second command:
> 
> "Warning: When Cisco determines that a fault or defect can be traced to
> the use of third-party transceivers installed by a customer or reseller,
> then, at Cisco's discretion, Cisco may withhold support under warranty or
> a Cisco support program. In the course of providing support for a Cisco
> networking product Cisco may require that the end user install Cisco
> transceivers if Cisco determines that removing third-party parts will
> assist Cisco in diagnosing the cause of a support issue."
> 
> I understand Cisco's warranty terms mentioned in the above Warning.
> 
> My worry is, is it safe to do this. Is it likely I will have problems in
> future
> with the switch. Am I likely to experience abnormal data transfer on the
> network in future?
> 
> 
> Thank You
> 
> Pamela Pomary
> ICT Dept.
> University of Ghana
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