Yes nameif DMZ and security-level 20. Removed the configuration on the old interface and shut it down. Did a no shut on the new interface and it stays down down.
I already have a TAC opened with our supplier, am waiting on their response. Behaviour is very strange because all interfaces from gi1/5 to gi1/8 are showing the same error. Only gi1/4 will come to a up up state but will not communicate with the switch but will have connected links on the interfaces.
Have you checked show conn detail to make sure the connections are being forwarded between the correct interfaces?
Another thing to check is show xlate and make sure NAT is being seen correctly.
dont be too hung up in show arp at the moment. Instead be more concerned with show mac. Are you seeing a mac address on that interface?
Lastly have you tried a reload? It is possible that there are some processes that are hanging.
Yes the sh conn detailed only shows connections on the outside to the voice and inside networks. NAT is correct on the voice and inside network on the sh xlate. sh mac on the uplink interface of the switch to the ASA interface is not showing. Reload I have to coordinate because this ASA is production.
Thank you Marius, that did the trick. I now have normal connection on the dmz host and now can apply the acl to let the outside in on the DMZ.