SFP Modules for 2960 GE-100FX or FE-100FX

sasklegassembly · ‎02-25-2008

We have purchased a Catalyst 2960 48 port switch I am trying to use a GE-100FX module to a 2950 100BaseFX fibre port. I get a link light but no traffic conversing. I have tried to find out if I should be using the FE or GE but can't find any relevant information... Does any one know if the GE-100FX is compatible? Thanks

pascal.coyles · ‎02-25-2008

Hi,

I don't have any personal experiance. But it looks like it should work.

There are some IOS limitations also depending on the switch type:

http://www.cisco.com/en/US/customer/docs/interfaces_modules/transceiver_modules/compatibility/matrix/OL632702.html

sasklegassembly · ‎02-25-2008

I know the SFP Module is compatible with the switch on the 2960 I just don't what SFP I can use the the 100BaseFx fibre port on the 2950... Don't know what the difference between the Gibabit Ethernet and the fast Ethernet 100FX module is.

jcoke · ‎02-25-2008

The only reason to use the FE is if you're plugging the thing into one of the compact 2960 switches.

You say the interfaces are UP/UP? Could it be an interface config mismatch? Are there syslog messages corresponding to when the interfaces are connected?

sasklegassembly · ‎02-25-2008

The 2960 has 2 dual purpose uplink ports which require SFP modules. We have to run fibre which would require a either the GE-100FX or a FE-100Fx which are both used for fibre. Yes the interface was up and up and we had lights nothing was tranversing the ports though. Don't have a syslog server so I am not sure about errors. Nothing was reported from the console.

jcoke · ‎02-25-2008

What do the interface configs look like? Paste them in or a 'sh int switchport'

mlund · ‎02-26-2008

According to the link pascal send,with 12.2.(25)fx the 2960-48tc-l is only supporting glc-fe, it's the 2960-48tc-s or 2960g48tc-l that supports either fe or ge. Can you verify what model you are using

/mike

sasklegassembly · ‎02-26-2008

2960g48tc-l. If I show the interface it shows the sfp module fine. Its odd I get link lights on the port after plugging in the fibre but can't get out the port.

sasklegassembly · ‎02-26-2008

Not sure it this will help there is nothing plugged into it right now.

Name: Gi0/1

Switchport: Enabled

Administrative Mode: dynamic auto

Operational Mode: down

Administrative Trunking Encapsulation: dot1q

Negotiation of Trunking: On

Access Mode VLAN: 1 (default)

Trunking Native Mode VLAN: 1 (default)

Administrative Native VLAN tagging: enabled

Voice VLAN: none

Administrative private-vlan host-association: none

Administrative private-vlan mapping: none

Administrative private-vlan trunk native VLAN: none

Administrative private-vlan trunk Native VLAN tagging: enabled

Administrative private-vlan trunk encapsulation: dot1q

Administrative private-vlan trunk normal VLANs: none

Administrative private-vlan trunk private VLANs: none

Operational private-vlan: none

Trunking VLANs Enabled: ALL

Pruning VLANs Enabled: 2-1001

Capture Mode Disabled

Capture VLANs Allowed: ALL

Protected: false

Unknown unicast blocked: disabled

Unknown multicast blocked: disabled

Appliance trust: none