Adding member bridge-domains

Before adding a bridge domain, you should have created a topology group and configured the master VLAN for that group. The bridge-domain should not be part of any other topology group. All control ports of master VLAN must also be configured for the member bridge-domain.

Enter the configure terminal command to access global configuration mode.
```
device# configure terminal
device(config)# 
```
Enter the topology-group command to create a topology group at the global configuration level.
```
device(config)# topology-group 1
device(conf-topo-group-1)#
```
Enter the master-vlan command to configure a master VLAN in the topology group.
```
device(conf-topo-group-1)# master-vlan 100
```
Enter the member-bridge-domain command to add member bridge-domains to the topology group.
```
device(conf-topo-group-1)# member-bridge-domain add 300
```
Note
The member-bridge-domain remove command removes an existing member bridge-domain from the topology group.
```
device(conf-topo-group-1)# member-bridge-domain remove 1
```

The example adds 300 as member bridge-domain to the topology group.

device# configure terminal
device(config)# topology-group 1
device(conf-topo-group-1)# master-vlan 100
device(conf-topo-group-1)# member-bridge-domain add 300