I'm now using a CRS326-24G and a CRS312-4C+8XG with both running SwOS 2.13. Currently I'm connecting one Ethernet port on CRS326-24G to our ISP. Due to the restriction from ISP, no STP traffic should be sent to ISP via that port. So I disabled RSTP for that port. No VLAN tag to ISP.
However, I found that CRS312-4C+8XG cannot learn the MAC of ISP gateway via RSTP. The two switches are connected with VLAN tag 100. It's important for me, because my virtual router is attached to CRS312-4C+8XG. Here are questions:
- Is it possible for SwOS to make the MAC address attached to an edge port propagated to other switches via RSTP? Dynamical or statical approaches are both welcome.
- If not possible, can I assign that ISP Ethernet port as the root of RSTP? In this way, any STP traffic won't be sent through that port.