3Com WX4400 3CRWX440095A manual Displaying Spanning Tree Information, Fast Convergence

	Displaying Spanning Tree Information 361
Configuring Uplink	To enable or disable uplink fast convergence, use the following
Fast Convergence	command:

Displaying Uplink

Fast Convergence

Information

set spantree uplinkfast {enable disable}

To display uplink fast convergence information, use the following command:

display spantree uplinkfast [vlan vlan-id]

The following command displays uplink fast convergence information for all VLANs:

WX1200# display spantree uplinkfast

VLAN port list

------------------------------------------------------------

1 1(fwd),2,3

In this example, ports 1, 2, and 3 provide redundant links to the network core. Port 1 is forwarding traffic. The remaining ports block traffic to prevent a loop.

Displaying

Spanning Tree

Information

You can use CLI commands to display the following STP information:

„Bridge STP settings and individual port information

„Blocked ports

„Statistics

„Port fast, backbone fast, and uplink fast convergence information

For information about the display commands for the fast convergence features, see “Configuring and Managing STP Fast Convergence Features” on page 358.

Displaying STP Bridge and Port Information

To display STP bridge and port information, use the following command:

display spantree [port port-listvlan vlan-id] [active]

By default, STP information for all ports and all VLANs is displayed. To display STP information for specific ports or a specific VLAN only, enter a port list or a VLAN name or number. For each VLAN, only the ports contained in the VLAN are listed in the command output.