Cisco 2960 with100-fx SFP port - traffic not passing port

Unanswered Question
Feb 22nd, 2008

configuring a Cisco 2960 48 port switch. Have link lights on sfp 100-fx interface but unable to ping connecting switch. (2950) unable to ping the other away as well.

I have this problem too.
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Jason Fraioli Fri, 02/22/2008 - 10:54

Is your management vlan up up? Does your management vlan have an IP address?

Do you have cdp running? try a "show cdp nei", that will show you if you have layer 2 connectivity to any other connected Cisco device.

sasklegassembly Fri, 02/22/2008 - 11:39

Yes the management vlan is up. It does have an IP address. I don't have cdp running.

sasklegassembly Fri, 02/22/2008 - 12:04

I just swapped the other 2950 back in and it came up right away. If I wasn't using the correct fibre media, I won't get a link light right? The 2950 have fixed 100 Base FX ports and the sfp module we purchased is a GLC-GE-100FX, I am wondering if these 2 interface are compatible.

Jason Fraioli Fri, 02/22/2008 - 12:46

Are you by chance running any vlans on the old switch(s)? Maybe your fiber ports weren't members of the correct management vlan.

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