I am trying to add a new sub interface and set the VLAN tag, however there is no VLAN Tag box when I add the interface. There is also no Tag column on the interfaces list in the WebUI.
I am using an SSG520 running ScreenOS 6.2.0r10.0
The firewall was recently decommissioned in one location, wiped, upgraded to this version of ScreenOS and has now been deployed in a new datacentre. Previously running 6.1.0 I have had no issue adding the VLAN tagging to a sub interface.
Is there a setting I need to enable to turn on this option?