Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

2940 gigabit sfp port standby/disabled, need to get it working

I get this on the fiber SFP port:

GigabitEthernet0/1 is standby mode, line protocol is down (disabled)

And I found some info that says I just need to reboot it with the SFP plugged in:

> As far as I remember, you should insert SFP and then reload switch.

> If you inserted SFP after boot - SFP port will be disabled, because

> onboard 100FX port will be selected as 'active uplink'

Is there any way to fix this without rebooting though? A reboot is not practical until the weekend, and I need to up before then. Thanks!

5 REPLIES

Re: 2940 gigabit sfp port standby/disabled, need to get it worki

Did you try and shut then no shut the interface?

New Member

Re: 2940 gigabit sfp port standby/disabled, need to get it worki

Yea, made no difference. Shutdown does not even shut it down, the status of the interface remains what I have above. Standby, and disabled. When I shutdown a port, it usually says administratively down.

Purple

Re: 2940 gigabit sfp port standby/disabled, need to get it worki

Is that a dual purpose port ? If so you would have to select the media type .

New Member

Re: 2940 gigabit sfp port standby/disabled, need to get it worki

No, it is a Cisco 2940. It has a 100base fx port, but it is not dual purpose. The FX is FA0/9 and the SFP is GI0/1. I found a post that was saying when the switch booted it selects the fx-100 port to be the primary if nothing is in the SFP port, and the SFO port is set to standby and the only way to reactivate it is a reboot.

I am hoping there is another way.

Bronze

2940 gigabit sfp port standby/disabled, need to get it working

I've got a WS-C2940-8TF-S and from what I can tell the only way to activate Gi0/1 is to reboot the switch with an SFP plugged in. 

2359
Views
6
Helpful
5
Replies