Re: I want to change the Interface of a zone from 1G to 10G port

Yes, system should allow to have two subinterfces with the same VLAN. Same can be configured in my LAB , see below :

set interface "ethernet0/1.1" tag 5 zone "DMZ"
set interface ethernet0/1.1 ip 192.168.1.1/30
set interface "ethernet2/0.1" tag 5 zone "DMZ"

However, it will not allow to configure the same subnet IP or same IP on two sub interfaces , So you will need to delete the IP from the exiting interface then it will allow you to add on the another one



Thanks and Regards
Vikas Singh