All,
I have a PC 5548. I just installed a new X300 firewall router from Barracuda.
The firewall also does inter-vlan routing so I setup all the subinterfaces for the vlans.
I set the port on the switch for trunking that goes to the firewall/router.
To test a vlan, in this case 20 I used my PC and changed the IP address to the same subnet as Vlan20 on the subinterface. In this case the default gateway or router subinterface is 192.168.20.254.
I have tried setting the switchport that connects my PC these different ways
Trunk, Access with Vlan 20, and General with 1U 20T. Nothing allows me to ping the gateway subinterface. I'm at a loss here.