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Cisco Gbic Question

The Sorrow

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I have a Catalyst 3560 24-Port PoE switch with 2 SFP connections. I plan on using an LC GBIC to connect to my pfSense box via an SC expansion card to make a fiber connection from my firewall to my LAN switch. Can i use a GBIC as an uplink port instead of for purposes of stacking?

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I don't see, why that wouldn't work. Plus, I am also buying two switches with SFP ports to do the same thing as you are going to do.

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  • 2 weeks later...

Ive come across an issue actually... i plug in SFPs to either of the two sfp slots (with the switch off) and i get

sw1-cobra.unit.net#sho int status err

Port Name Status Reason
Gi0/1 err-disabled gbic-invalid


sw1-cobra.unit.net#sh int gi 0/1 status

Port Name Status Vlan Duplex Speed Type
Gi0/1 err-disabled 1 auto auto unknown

here is my config for the interface

interface GigabitEthernet0/1
 switchport trunk encapsulation dot1q
 switchport mode trunk
 speed nonegotiate
 channel-group 3 mode desirable non-silent

may need a different GBIC? If so whats compatible with a WS-C3560-24PS...

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