If you still can't do non-disruptive ISSU, please share output from 'sh vlan'. You might need to change the allowed vlans on your port-cannel. I hope that helps.--Asad

Hi Addy,Please do this config change:#conf t#int po1#spanning-tree port type networkTry 'sh spanning-tree issu-impact' again and everything should pass.Cheers!!Asad Jahangir

Please try this:On CME: ======== telephony-service authentication credential [your username] [your password] On CUE ======== se-10-50-10-125(config)# site name local se-10-50-10-125(config-site)# phone authentication   username [your usernam...