Down/uP port after sent conf to AP

Hi everybody ,

i have  a BUG ? when a configuration sent to AP, just after it donw and up my port 1... My port1 has just my vlan for Data/VOIP/Supervision..... the user was connected by IPsec site to site and they lost their connection after that.

It's not the first time and my user was disconnected. It's bug? i need to change my vlan port ? :(  

Thx all for your help