Mitel - DHCP Discovery

[alliasneo1]

Hi, I have a Mitel 5312 phone plugged into a switchport configured for ISE but when it boots up it gets stuck on DHCP Discovery. If I put the port to authentication open then it goes through and boots up as normal.

The logs all look ok but I can't see why it's not getting an ip address.

This is for MAB.

Any ideas? thanks

[alliasneo1]

It appears to be working now. I put the port config back on and removed authentiation open. rebooted the phone and now it's booted up correctly and I can see the ip address in ISE.

[Aref Alsouqi]

Glad it worked. If you see some inconsistent behaviour, probably worth checking with the vendor if there is any known issues with the firmware release they are running and maybe there is an updated firmware version.