I had an issue the other day on not being able to have our Avaya 9608 phones reach the call server and get an IP address. I fixed that by re-configuring a new summit switch from scratch my way. I isolated the switch, the call server and one phone. It was a success!
Now when adding a data dhcp server for our PC's into the lineup. Located on port 3 of the switch untagged just for the data vlan. The phones get stuck at LLDP on boot. But LLDP is configured perfectly... to my knowledge. I plugged my laptop into the switch and got an IP address from the data dhcp server perfectly. But the phones won't work with the data dhcp server hooked up to the switch (when the call server is hooked up as well). Well they will work with static addresses but who wants to manually enter all that in.
Of course I can separate the switches and have one dedicated for voice call server and one for data dhcp server and everything will be fine, but I wouldn't like to do that. Any good troubleshooters out there no why this is???