PowerConnect 2848 - Multiple VLAN on 1 port not working

Hello everyone.

I have a Dell PowerConnect 2848.  My Router is a Netgear SRX5308. In the router, I have created multiple VLANs (VLAN ID 10 and 20) and want to pass that over to the ESXi server. If I connect the ESXi server directly to the router, everything works as expected. My VMs are picking up correct VLAN based on the ESXi settings.

I need the 2848 in between as I need to add more devices and additional servers that have specific VLAN. 

Currently, I am using port 25 for the 2848 switch. 

I have put the switch in Managed mode. 

In Switch -> VLAN -> VLAN Membership, I created VLAN ID 10 and 20. 

I select VLAN 10, and put T on port 25.

I select VLAN 20, and put T on port 25.  (I also tried putting a U on them as well, just to try, but did not work)

But my the VM are not able to reach DHCP on the router. 

Spanning Tree is enabled.

I am obviously missing something... 

I have already spent last week banging my head on this but have not been able to pass the traffic along.

Please help!!!!