Brocade BigIron RX Series Configuration Guide - Manual (Page 531)

BigIron RX Series Configuration Guide 453
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Configuring a topology group
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• 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 (by entering no master-vlan <vlan-id>), the software selects the
new master VLAN from member VLANs. A new candidate master-vlan will be in configured
order to a member VLAN so that the first added membe VLAN will be a new candidate master
VLAN. Once you saved and reloaded, a member VLAN with the newest VLAN ID will be thenew
candidate master. The new master VLAN inherits the Layer 2 protocol settings of the older
master VLAN.
• Once you add a VLAN or VLAN group as a member of a topology group, all the Layer 2 protocol
configuration information for the VLAN or group is deleted. For example, if STP is configured on
a VLAN and you add the VLAN to a topology group, the STP configuration is removed from the
VLAN. Once you add the VLAN to a topology group, the VLAN uses the Layer 2 protocol settings
of the master VLAN.
If you remove a member VLAN or VLAN group from a topology group, you will need to
reconfigure the Layer 2 protocol information in the VLAN or VLAN group.
Configuring a topology group
To configure a topology group, enter commands such as the following.
BigIron RX(config)# topology-group 2
BigIron RX(config-topo-group-2)# master-vlan 2
BigIron RX(config-topo-group-2)# member-vlan 3
BigIron RX(config-topo-group-2)# member-vlan 4
BigIron RX(config-topo-group-2)# member-vlan 5
BigIron RX(config-topo-group-2)# member-group 2
The commands configure topology group 2 and add the following to it:
• VLAN 2 as master VLAN
• VLANs 3, 4, and 5 as member VLANs
• Member VLAN group 2
Syntax: [no] topology-group <group-id>
The command creates a topology group.The <group-id> parameter assigns an ID 1 – 256 to the
topology group.
Syntax: [no] master-vlan <vlan-id>
This command adds the master VLAN to the topology group. The VLAN must already be configured.
Make sure all the Layer 2 protocol settings in the VLAN are correct for your configuration before you
add the VLAN to the topology group. A topology group can have only one master VLAN.
Syntax: [no] member-vlan <vlan-id>
This command adds a member VLAN to the topology group. The VLAN must already be configured.
Syntax: [no] member-group <num>
This command adds a VLAN group to the topology group. The <num> specifies a VLAN group ID.
The VLAN group must already be configured.