Nope.
Create as many vlans as you need,
assign them to the bridge.
The managed switch gets an IP address on the managed vlan.
The admin should administer the configs on the managed vlan
The sxt should have two vlans, one managed and one for the WLAN ISP2 signal.
The SxT should get an Ip address from the management vlan and thus also configurable.
The idea being we are going to put the incoming WLAN ISP2 signal onto a vlan and carry it to the RB450G as WAN2 input.
Thus the managed switch will only see the vlans
Vlan-sxt
Vlan-management
(both should be created on the SXT and the router)
(the vlan-sxt does not get an ip address, or ip pool etc…)
I am not familiar with how the SXT works, so the above may have to be adjusted accordingly. There should be no need for hybrid ports!!
