Cisco Catalyst 3560 PoE-48 unable to negotiate gigabit connection with Omnia

I’ve just replaced my Cisco Catalyst 3560G PoE-24 switch with a 3560 PoE-48. All of the other connections to the switch which previously had gigabit connections on the 3560G are now showing gigabit connections on the 3560 – except the Omnia, which only negotiates a 100mb connection. I’ve tried about half a dozen Cat-6 cables. No joy.

I’ve tried putting the 3560G between the Omnia and the 3560 but then it still drops the gigabit connection when leaving the 3560G.

Any thoughts/suggestions/advice greatly appreciated.

Try check Catalyst port settings.