Cannot get an interface up

[ati]

I have a system with a 2 port Intel I225-V 2.5Gb card in it. (Interface igc0 and igc1).

I am currently using igc0 as my WAN interface to my 2.5Gb fiber service and it is working great. I recently got a second ISP and I am trying to connect it to igc1. No matter what I do I cannot get the NIC to even light up.

• I have checked the cable by using it in igc0.
• I have tried several devices and several cables, no luck.
• I know it is not a firmware/driver issue as I am currently using an interface on the same card.
• I have the interface enabled, speed set to 1000 (just to be safe).

It feels like the interface is 'administratively down'. The only other explanation is hardware failure, but I find that a bit hard to believe. I've never had one port on a multi port NIC fail personally.

Any other things I should be looking into?

[patient0]

Any other things I should be looking into?

What is the ISP2 device you're connecting to (type/model)?

• Add a small switch between igc1 and the ISP modem/router. The ISP modem/routers are sometimes very picky when it comes to auto negotiate speed
• Or try set the interface speed manually to something you know the ISP modem/router supports
• Or configure it as an additinal LAN(2) interface, connect it to a small switch. That should be enough to see if the link comes up