H3C S7500E Series Ethernet Switches Operation Manual

Operation Manual – MSTP
H3C S7500E Series Ethernet Switches Chapter 1 MSTP Configuration
1-20
To do... Use the command... Remarks
Configure the MST region
name
region-name name
Optional
The MST region name
is the MAC address by
default.
instance instance-id vlan
vlan-list
Configure the
VLAN-to-instance mapping
table
vlan-mapping modulo
modulo
Optional
Use either command.
All VLANs in an MST
region are mapped to
MST instance 0 by
default.
Configure the MSTP
revision level of the MST
region
revision-level level
Optional
0 by default
Activate MST region
configuration manually
active
region-configuration
Required
Display all the configuration
information of the MST
region
check
region-configuration
Optional
Display the currently
effective MST region
configuration information
display stp
region-configuration
The display command
can be executed in any
view.
 Note:
z MSTP-enabled switches are in the same region only when they have the same
format selector (a 802.1s-defined protocol selector, which is 0 by default and cannot
be configured), MST region name, VLAN-to-MSTI mapping table, and revision level.
z The H3C series support only the MST region name, VLAN-to-MSTI mapping table,
and revision level. Switches with the settings of these parameters being the same
are assigned to the same MST region.
The configuration of MST region–related parameters, especially the VLAN-to-instance
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 if you:
z activate the MST region–related parameters using the active
region-configuration command, or
z enable MSTP using the stp enable command.