vlans that we purposely want another device to be root


Userlevel 1
We use specialty vlans in some dual router topologies that we want another device to become root. In this case we would have a certain range of vlans with one priority and another range with a different one on the same switch. The Cisco syntax would be written as such:
Switch A:
spanning-tree vlan 1-999 priority 0
spanning-tree vlan 1000-4094 priority 8192
Switch B:
spanning-tree vlan 1-999 priority 4096
spanning-tree vlan 1000-4094 priority 12288
How can we reproduce this in Cumulus?
Thanks.

2 replies

Userlevel 3
That type of topology typically requires Cisco's PVST+ which is only available with traditional bridges. The other option is a full 802.1S (MST) implementation, which Cumulus does not currently support. The legacy multiple-root spanning-tree model for balancing network utilization is becoming less popular, with technologies like MLAG and Layer-3 to the host, becoming more appealing.
Userlevel 1
Jason Guy wrote:

That type of topology typically requires Cisco's PVST+ which is only available with traditional b...

Thanks Jason!

Reply