igc0 will not link at 1000baseT full-duplex - Netgear Switch

[CyberTend]

I am thinking I need a newer/different ethernet switch, but here is the situation:
1) I am using a Cat6 cable factory made
2) This is an older NetGear GS5716TPP but all ports capable of 1000baseT
3) Setting both sides to autonegotiate, I only get 100meg
4) Setting both sides to 1000baseT Full, no connection at all.

I do have many other devices on the switch that are indeed connected at 1000baseT.
I would not worry about it but I have a Gig home internet service.
The WAN side to the carrier fiber NID is running at 2500baseT full (in auto mode)

So I have internal LAN side running at 100meg full and WAN side running at 2500baseT full

Perhaps a switch incompatibility?
What switches are folks using that you know work?

[pfry]

Just to be sure, have you tried multiple cables and endpoints and/or checked the cable and sockets? Normally failure to negotiate 1000BASE-T and success at 100BASE-TX indicates missing/no connection in positions 4/5 or 7/8.

[meyergru]

Could also be a faulty port on the switch or on your firewall or bad NIC support if Realtek NICs are in use.

[nero355]

Could also be a faulty port on the switch or on your firewall

Since I had this happen on two totally different Switches from two different brands I am suspecting it might be the case here too...

or bad NIC support if Realtek NICs are in use.

igc = always Intel AFAIK ?!

1) I am using a Cat6 cable factory made

Is this just UTP or some Shielded version ?

There are some Switches that do not like Shielded cables out there !!

3) Setting both sides to autonegotiate, I only get 100meg
4) Setting both sides to 1000baseT Full, no connection at all.

- Automatic Negotiation is the best way to detect issues, so avoid using Manual Settings !!
- What happens when you "wiggle" the connector of the cable in the port ?
The LED of the port could show changes in the operating speed while you do this.

I do have many other devices on the switch that are indeed connected at 1000baseT.

Could you swap ports to make sure it's not the NIC Port of your OPNsense having issues ?

Perhaps a switch incompatibility?

Don't think so... Very rare anyway...

What switches are folks using that you know work?

Any decent brand should work and if it doesn't then it's probably a cable or port issue IMHO :)