Configuring The Root Bridge; Configuring An Mst Region - H3C S5120-EI Series Operation Manual

Configuring the Root Bridge

Configuring an MST Region

Configuration procedure
Follow these steps to configure an MST region:
To do...
Enter system view
Enter MST region view
Configure the MST region
name
Configure the
VLAN-to-MSTI mapping
table
Configure the MSTP
revision level of the MST
region
Activate MST region
configuration manually
Display all the
configuration information of
the MST region
Display the currently
effective MST region
configuration information
Two or more MSTP-enabled devices belong to the same MST region only if they are configured to have
the same MST region name, the same VLAN-to-MSTI mapping entries in the MST region and the same
MST region revision level, and they are interconnected via a physical link.
The configuration of MST region–related parameters, especially the VLAN-to-MSTI mapping table, will
cause MSTP to launch a new spanning tree calculation process, which may result in network topology
instability. To reduce the possibility of topology instability caused by configuration, MSTP will not
immediately launch a new spanning tree calculation process when processing MST region–related
configurations; instead, such configurations will take effect only after you:
activate the MST region–related parameters using the active region-configuration command, or
enable MSTP using the stp enable command.
Use the command...
system-view
stp region-configuration
region-name name
instance instance-id vlan vlan-list
vlan-mapping modulo modulo
revision-level level
active region-configuration
check region-configuration
display stp region-configuration
1-16
Remarks
—
—
Optional
The MST region name is the
MAC address by default.
Optional
Use either command.
All VLANs in an MST region
are mapped to MSTI 0 by
default.
Optional
0 by default
Required
Optional
The display command can
be executed in any view.