I have a routerboard 9 port and we are trying to use it as a switch with 2 vlans for an industrial application. My config looks like this:

Port 2
vlan 1
vlan 33

port 3 is a member of bridge1
vlan 1 is a member of bridge1

port 4 is a member of bridge 33
port 5 is a member of bridge 33
port 6 is a member of bridge 33
port 7 is a member of bridge 33
port 8 is a member of bridge 33
port 9 is a member of bridge 33
vlan 33 is a member of bridge 33

In this config, vlan 33 will work (I can ping the gateway) but vlan 1 will not.. If I put port 2 into bridge 1, it breaks vlan 33 but vlan 1 works (I can ping the gateway).

The twist is, if we change vlan 1 to vlan 3 both vlans work, however that will complicate our addressing scheme beyond belief in this situation.

We put a cisco 2950 in place, make a trunk port and setup the vlans (1, 33) and everything works fine, so I am thinking I have a config issue.. Any ideas?

http://forum.mikrotik.com/viewtopic.php?f=2&t=39906

I listed the steps for configuring vlans at the bottom of that post. Post again if you need more help and I will try and check back later.

Is vlan1 on the device plugged into port 2 tagged? If not, tag it on the switch and have no native vlan on the switch port, then itll work.