Why should one need to add a new bridge ?

[olivier2831]

Hello,

RouterOS v6.43 default config includes a bridge named bridge and all ports belong to this default bridge.

My understanding of bridge is use bridge as synonymous of switch.
In another hand, documentation (see [1]) mentions creating a new bridge1 bridge as a first step when creating VLANs.

Why should one need to create another bridge, in the first place, when VLANs exist ?
Can you explain ?

[1] https://wiki.mikrotik.com/wiki/Manual:Interface/Bridge#Bridge_VLAN_Filtering

Best regards

[mkx]

Bridge VLANs are new since ROS 6.41 … until then, one could live without any bridge at all. Where now one uses bridge port one used to use master-port. If the ports were not switched, then configuration was done directly on ports, including VLAN configuration. And if one wanted to bridge multiple VLANs on multiple ports, it was necessary to create as many bridges. The linked manual was obviously written at the time of introduction to bridge VLANs and hence need to create (another?) bridge to bridge all the ports.

So there’s no need to create another bridge for VLANs on modern ROS versions, single bridge does the trick admirably.

[olivier2831]

Bridge VLANs are new since ROS 6.41 … until then, one could live without any bridge at all. Where now one uses bridge port one used to use master-port. If the ports were not switched, then configuration was done directly on ports, including VLAN configuration. And if one wanted to bridge multiple VLANs on multiple ports, it was necessary to create as many bridges. The linked manual was obviously written at the time of introduction to bridge VLANs and hence need to create (another?) bridge to bridge all the ports.

So there’s no need to create another bridge for VLANs on modern ROS versions, single bridge does the trick admirably.

Thank you very much for this concise explanation.