I will try to be the more explicit on my problem because i'm starting with extreme products.
We have one customer who has decided to implement netlogin by an other company and some problems occurs like IP phones that are disconnected (Mitel) and i see many logs like:
01/16/2017 07:24:23.23 [i] Slot-1: Network Login user 64B9E8BAC682 cleared due to link down event, Mac 64:B9:E8:BA:C6:82 port 4:2 VLAN(s) "Ordinateurs"
01/16/2017 07:24:23.21 [i] Slot-1: Port 4:2 link down
We use X460-48p (Stack) with 18.104.22.168 image according to extreme support case.
I don't know really how to troubleshoot this on extreme, i see there are a lot of options like netlogin port restart .. but i need some help on this subject to know a right config.
I think maybe as the FDB cleared this IP phones are unable to retrieve config as they are not often used (1 in meeting room, the other in a local).
Maybe it's the hardware model of phones?
If you have experienced this problem could you help me on the subject?