I'm suffering from the following issue on a RB in production. I have a switch plugged into Eth3 and another router in Eth4, with it's own DHCP server on VLAN 10. The switch is aware of VLAN 10 and passes this tag onto APs which have a WLAN untagged on VLAN 10.
I created a bridge (bridge-10) just for vlan 10 and bridged together Ether3(VLAN10) and Ether4(VLAN10) i also have another bridge (bridge-lan) with dhcp server on mikrotik and bridged Ether3 and Ether4.
On the surface, everything looks ok until you start pinging the router WAN ip on Ether4 and get about 5% packet loss over extended duration. What I also noticed is that the interfaces Ether3(VLAN10) and Ether4(VLAN10) do not show any traffic going through them ( and there is traffic), all the traffic is showed on bridge-lan and it's interfaces.
I reviewed the layer2 misconfiguration article and tried disabling (R)STP on bridge-10 but no luck. What i then did was disable bridge-10 and it's interfaces altogether, then everything starts working normally, no packet loss, people can surf on VLAN (as far as i can tell remotely)
1. is it ok to leave it without vlan 10 tagged anywhere on the mikrotik if it is working, or will i start to see weird thing happen.
2. Does anyone know why I would receive packet loss with the 2 vlan interfaces bridged and no other configuration applied (I've actually done this at other sites with no issue, and see the VLAN traffic passing on the individual VLAN interfaces)
RB is on 6.44.2