Catalyst 2960 compatibility

Unanswered Question
Aug 4th, 2008
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I am new to Cisco switches world.

I have one Catalyst 2960 switch with 4 Gigabit ports.

Using gigabit ports with GBIC (1310nm), this cisco switch was not able to connect to D-link or 3Com switches with the same gbic model and port type.

But I could make 2 d-link switches talk to each other using the same optical fiber structure and port type. And the same with 2 3com switches.

Is there any kind of incompatibility between catalyst 2960 switches and other ones? Or is it misconfigurated?


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Pari Thiagasundaram Mon, 08/04/2008 - 12:19
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Can you try disabling auto negotiation of speed and duplex on both the switches and check again?.

Pari Thiagasundaram Mon, 08/04/2008 - 12:33
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Under the Gig interface configuration,

NativeIOS(config-if)#speed 1000

NativeIOS(config-if)#duplex full

Do the same on the other 3-com or D-link switches as well.

glen.grant Mon, 08/04/2008 - 13:59
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Unless they are cisco approved gbics they may not work in a cisco box. They should be cisco gbics.


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