Configure The Max Hops In An Mst Region - Huawei Quidway S3000 Series Operation Manual

Operation Manual - STP
Quidway S3000 Series Ethernet Switches
You can use the following command to configure the Bridge priorities of the designated
switch in different STIs.
Perform the following configuration in system view.
Table2-6 Configure the Bridge priority for a switch
Configure the Bridge priority of the designated
switch.
Restore the default Bridge priority of the
designated switch.
When configuring the switch priority with the instance instance-id parameter as 0, you
are configuring the CIST priority of the switch.
Caution:
In the process of spanning tree root election, of two or more switches with the lowest Bridge priorities, the
one has a smaller MAC address will be elected as the root.
By default, the switch Bridge priority is 32768.

2.2.5 Configure the Max Hops in an MST Region

The scale of MST region is limited by the max hops in an MST region, which is
configured on the region root. As the BPDU traveling from the spanning tree root, each
time when it is forwarded by a switch, the max hops is reduced by 1. The switch
discards the configuration BPDU with 0 hops left. This makes it impossible for the
switch beyond the max hops to take part in the spanning tree calculation, thereby
limiting the scale of the MST region.
You can use the following command to configure the max hops in an MST region.
Perform the following configuration in system view.
Table2-7 Configure the max hops in an MST region
Configure the max hops in an MST region.
Restore the default max hops in an MST region
Operation
Operation
2-15
Chapter 1 RSTP Configuration
Command
stp [ instance instance-id ] bridge-priority
priority
undo stp [ instance instance-id ] bridge-priority
Command
stp max-hops hop
undo stp max-hops