No option to add uplink on dual ports on ICX 7250

unknown

First post. I'm setting up a VLAN. I have 2 ICX-6450-48P switches and an ICX-7250-48P switch. I configured them from the web interface. Please don't flame cuz I don't use the CLI for everything. thanks. On the 6450s on ports 1/2/3 and 1/2/4 I have them configured as dual mode on VLAN 1 and uplink on VLAN 5. Works great. passes both tagged and untagged traffic. Acts like a "trunk" port which is what I want. But on the 7250, I have added those ports as dual  mode on VLAN 1, and tagged the traffic for VLAN 5, but then I don't have the option to add the ports as "uplink ports" for vlan 5. Nothing else seems to be different. Am I missing something super obvious? Ports 1/2/7 and 1/2/8 on the 7250 don't forward the tagged vlan 5 packets it seems. 

BenBeck

I believe that uplink port option is a bit misleading. I think that adds a command that limits mulicast/broadcast on the client side ports and forces everything in that vlan to the uplink port. It can cause issues and isn't needed. The web gui really hasn't been worked on at all since the 7xxx series was released. I wouldn't recommend using it at all. As for what you are doing, you just need the ports to be tagged in the appropriate vlans. If you want to also send untagged at the same time, you need dual mode as well like had mentioned.