3com 4210 PWR 9-Port 3CR17341-91-ME 用户手册
产品代码
3CR17341-91-ME
Configuring Root Bridge
155
Configuring an MST
Region
Configuration procedure
n
NTDP packets sent by devices in a cluster can only be transmitted within the
instance where the management VLAN of the cluster resides.
instance where the management VLAN of the cluster resides.
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:
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:
■
Activate the new MST region-related settings by using the active
region-configuration command
region-configuration command
■
Enable MSTP by using the stp enable command
n
Switches belong to the same MST region only when they have the same MST
region name, VLAN mapping table, and MSTP revision level.
region name, VLAN mapping table, and MSTP revision level.
Configuration example
# Configure an MST region, with the name being "info", the MSTP revision level
being level 1, VLAN 2 through VLAN 10 being mapped to spanning tree instance
1, and VLAN 20 through VLAN 30 being mapped to spanning tree 2.
being level 1, VLAN 2 through VLAN 10 being mapped to spanning tree instance
1, and VLAN 20 through VLAN 30 being mapped to spanning tree 2.
<4210> system-view
[4210] stp region-configuration
[4210-mst-region] region-name info
[4210-mst-region] instance 1 vlan 2 to 10
Table 102 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
MST region
region-name name
Required
The default MST region name
of a switch is its MAC address.
of a switch is its MAC address.
Configure the VLAN mapping
table for the MST region
table for the MST region
instance instance-id vlan
vlan-list
vlan-list
Required
Both commands can be used
to configure VLAN mapping
tables.
to configure VLAN mapping
tables.
By default, all VLANs in an
MST region are mapped to
spanning tree instance 0.
MST region are mapped to
spanning tree instance 0.
vlan-mapping modulo
modulo
modulo
Configure the MSTP revision
level for the MST region
level for the MST region
revision-level level
Required
The default revision level of an
MST region is level 0.
MST region is level 0.
Activate the configuration of
the MST region manually
the MST region manually
active region-configuration Required
Display the configuration of
the current MST region
the current MST region
check region-configuration Optional
Display the currently valid
configuration of the MST
region
configuration of the MST
region
display stp
region-configuration
region-configuration
You can execute this
command in any view.
command in any view.