H3C Technologies H3C S3100 Series Switches - Manual (Page 184)

Operation Manual – MSTP
H3C S3100-52P Ethernet Switch
Chapter 1 MSTP Configuration
1-9
1.2.2 Configuring the MST region
I. Configuration procedure
Table 1-3 Configure an MST region
Operation Command Description
Enter system view system-view —
Enter MST region view
stp region-configuration
—
Configure the name of the
MST region
region-name name
Required
The default MST region
name of a switch is its
MAC address.
instance instance-id vlan
vlan-list
Configure the VLAN
mapping table for the
MST region
vlan-mapping modulo
modulo
Required
Both commands can be
used to configure VLAN
mapping tables.
By default, all VLANs in
an MST region are
mapped to spanning tree
instance 0.
Configure the MSTP
revision level for the MST
region
revision-level level
Required
The default revision level
of an MST region is level
0.
Activate the configuration
of the MST region
manually
active
region-configuration
Required
Display the configuration
of the current MST region check
region-configuration
Optional
Display the currently valid
configuration of the MST
region
display stp
region-configuration You can execute this
command in any view.
Configuring MST region-related parameters (especially the VLAN mapping table)
results in spanning tree recalculation and network topology jitter. To reduce network
topology jitter caused by the configuration, MSTP does not recalculate spanning trees
immediately after the configuration; it does this only after you perform one of the
following operations, and then the configuration can really takes effect:
z
Activate the new MST region-related settings by using the active
region-configuration command
z
Enable MSTP by using the stp enable command