During the PnP process, I have successfully had a switch reach out, upgrade it's code and apply the config template from an uplink that is an untagged interface for dot1q.
When I plug in an uplink that is going to be a tagged dot1q interface, a trunk port, I can't get the upstream router to allow the pnp server dns request through. How are you guys configuring the router to allow a trunk port to accept the pnp request from an un-configured switch? I've made a sub-interface the native vlan, but that didn't work.
Do I just configure the uplink as an untagged interface and accept that I will lose contact with the switch after the config is applied and until I reconfigure the uplink port on the router?
