Using FIber connections on Catalyst 2960

Unanswered Question
Jan 14th, 2009

I have a Catalyst 2960 and when I try to connect fiber to it it does not connect. It works fine with the ethernet connection in the same port. Is there anything special I need to do to make that work?

Here is the configuration for that port:

interface GigabitEthernet0/1

switchport trunk allowed vlan 1,100

switchport mode trunk

macro description cisco-switch

I have this problem too.
0 votes
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
jlauner99 Thu, 01/15/2009 - 13:56

It is recognizing the media but will not communicate over it. No link lights are on either switch. It works fine on ethernet.

Sushil Kumar Katre Fri, 01/16/2009 - 03:35

Hi Jesse,

Let us know which SPF module are you using.

Please make sure if its 1000Base SX then you are using a Multi Mode Fiber cable and not Single Mode.

Also make sure that you have similar SFPs on both the sides.

-> Sushil

jlauner99 Fri, 01/16/2009 - 06:16

It is a multimode fiber cable with gender changers in the middle because one end of the cable is SC and the other is LC. The GBIC are GLC-SX-MM from Cisco and it is 1000Base SX


This Discussion