Topology Group Configuration Considerations - RUCKUS Networks Documentation

You must configure the master VLAN and member VLANs or member VLAN groups before you configure the topology group.

You can configure up to 30 topology groups. Each group can control up to 4096 VLANs. A VLAN cannot be controlled by more than one topology group.

The topology group must contain a master VLAN and can also contain individual member VLANs, VLAN groups, or a combination of individual member VLANs and VLAN groups.

If you add a new master VLAN to a topology group that already has a master VLAN, the new master VLAN replaces the older master VLAN. All member VLANs and VLAN groups follow the Layer 2 protocol settings of the new master VLAN.

If you remove the master VLAN using

no
                  					master-vlan

vlan-id, the system automatically selects a new master VLAN from the existing member VLANs. The selection follows the configured order: the first member VLAN added becomes the initial candidate. After you save and reload, the member VLAN with the lowest VLAN ID becomes the new candidate master. The new master VLAN inherits the Layer 2 protocol settings from the previous master VLAN.

The topology group will be deleted if the master is deleted and there are no member VLANs. This is true even if the topology group has member-groups.

Once you add a VLAN as a member of a topology group, all the Layer 2 protocol information on the VLAN is deleted.

A default VLAN cannot be a member of a topology group.

MRP master node has to be un-configured (no master-vlan command) prior to changing the master VLAN of a topology group where this MRP instance is part of. This action prevents MRP BPDU hardware flooding which can result in MRP continuous state flap.