Alcatel Unleashed

Good afternoon,

I have a switch Omniswitch 6648 and i would like some help if it were possible. To configure a management address I'm using the command "vlan 1 router ip x.x.x.x y.y.y.y e2". After configuring the address, I save the settings and reload the switch. After boot the address .246 is in the settings, but after 1 minute the switch switches to .139 without me touching it. I've been looking at the files in /flash and everything is fine and with the address .246.
Can anyone tell me what's going on?

Any help, I appreciate it.

this switch is at least 20 years old. So I don't know it. But sometimes also a switch has an end of live .... (or should have).
best regards
Silvio