Hello,

I just bought a CRS326-24G-2S+ and loaded the latest current RouterOS 6.40.3.

I want to have two different subnets one on ports [3-20] with ether3 master and one on ports [21-24] with ether21 master, leaving ether1 and ether2 for PPPoE clients. One previous CRS models this was implemented by having ether3 as master with port[4-20] slaves to ether3 and ether21 as master with port[22-24] slaves to ether21. I tried this on the CRS326 and it will not let me having slaves bound to different masters. When I try to add slaves to ether21, it returns: "failure: only one master port in switch group allowed".

Please tell me which is the best practice to achieve this with the CRS326-24G-2S+.

From a quick look at the forums I saw that rc RouterOS versions support bridge hardware offloading to the switch chip. So with the latest RC version, I can potentially group ports [3-20] to bridge1 and ports [21-24] to bridge2 without the traffic passing through the CPU. Is it the best way now? If yes, what would be a sample config?

If I want to keep the latest current, is there a way to achieve config above without having the traffic passing through the CPU?

Thank you.

Same problem here and routeros v6.41 doesn't help. Ports in second bridge don't have "H" flag so it uses CPU: https://i.imgur.com/hsICgKg.png

CRS326 sux. CRS125 had multiple switch groups. Probably you can achieve what you need with VLANs but it's a limited solution.

I would think that setting all ports to the same bridge, adding two vlan interfaces to the bridge, and then setting the PVID on each port to match the VLAN you want it to appear in would be the way to do this. That would give full HW-accelerated switching with ports being separated from each other.