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196 PowerConnect B-Series TI24X Configuration Guide
53-1002269-02
Topology groups
8
Displaying STP information
To display STP information for a VLAN, enter a command such as the following.
This example shows STP information for VLAN 4. The line shown in bold type indicates that the
VLAN STP configuration is controlled by VLAN 2. This information indicates that VLAN 4 is a
member of a topology group and VLAN 2 is the master VLAN in that topology group.
Displaying topology group information
To display topology group information, enter the following command.
Syntax: show topology-group [<group-id>]
This display shows the following information.
TABLE 32 CLI display of topology group information
This field... Displays...
master-vlan The master VLAN for the topology group. The settings for STP, MRP, or VSRP on
the control ports in the master VLAN apply to all control ports in the member
VLANs within the topology group.
member-vlan The member VLANs in the topology group.
Common control ports The master VLAN ports that are configured with Layer 2 protocol information.
The Layer 2 protocol configuration and state of these ports in the master VLAN
applies to the same port numbers in all the member VLANs.
L2 protocol The Layer 2 protocol configured on the control ports. The Layer 2 protocol can
be one of the following:
• MRP
• STP
• VSRP
Per vlan free ports The ports that are not controlled by the Layer 2 protocol information in the
master VLAN.