IP lost after power outage

[caponet]

Hello,

I've got 2 3Com Baseline Switch 2926-PWR Plus 10/100 PoE Switch.

I configure the IP address of them using the console connection, and then I enter into the web configuration tool and I save the configuration manually in order to make sure that is correctly saved. No matter what I do, everytime there's a power outage the IP addres configuration is lost. However, any other configuration (VLAN, SNMP, port configuration) is still there.

How can I save the IP configuration?

Thank you, regards