3Com WX3000 operation manual Configuring an MST Region

In a network containing devices with both GVRP and MSTP enabled, GVRP packets are forwarded along the CIST. If you want to advertise packets of a specific VLAN through GVRP, be sure to map the VLAN to the CIST when configuring the MSTP VLAN mapping table (the CIST of a network is spanning tree instance 0).

Configuration Prerequisites

The role (root, branch, or leaf) of each device in each spanning tree instance is determined.

Configuring an MST Region

Configuration procedure

Follow these steps to configure an MST region:

To do…	Use the command…	Remarks
Enter system view	system-view	—
Enter MST region view	stp region-configuration	—
Configure the name of the MST		Required
	region-name name	The default MST region name
region		of a device is its MAC address.
	instance instance-idvlan	Required
	vlan-list	Both commands can be used to
Configure the VLAN mapping		configure VLAN mapping
		tables.
table for the MST region
	vlan-mapping modulo modulo	By default, all VLANs in an
		MST region are mapped to
		spanning tree instance 0.
Configure the MSTP revision		Required
	revision-level level	The default revision level of an
level for the MST region
		MST region is level 0.
Activate the configuration of the	active region-configuration	Required
MST region manually
Display the configuration of the	check region-configuration	Optional
current MST region
Display the currently valid	display stp	You can execute this command
configuration of the MST region	region-configuration	in any view.

NTDP packets sent by devices in a cluster can only be transmitted within the instance where the management VLAN of the cluster resides.

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