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Configure Pseudo Information Configuration Function of Spanning Tree

Configuration Condition

The parameters configured in pseudo information configuration mode take effect in MLAG environment.

Configure the Specified Root Bridge Priority of the Instance

Configure the root bridge priority of the specified spanning tree instance in the pseudo information.

Table 9-30 Configure the specified root bridge priority of the instance

Step

Command

Description

 

Enter the global configuration mode.

configure terminal

-

Configure entering the pseudo information

spanning-tree pseudo- information

Mandatory

Configure the root bridge priority of the specified spanning tree instance

mst instance [instance-idroot-priority [priority-value]

Mandatory

By default, configure the root bridge priority of each spanning tree instance in the configuration pseudo information as 0 (the highest priority).

instance-id: spanning tree instance ID, with a value range of 0 – 63.

priority-value: configure the root bridge priority of the device in the specified spanning tree instance. The smaller the value, the higher the priority

note


  • The configuration step of root bridge priority value is 4096, which can be configured as: 0, 4096, 8192, 12288, 16384, 20480, 24576, 28672, 32768, 36864, 40960, 45056, 49152, 53248, 57344, 61440.
  • On the MLAG paired device, the root bridge priorities of all instances configured in the pseudo information of the two devices must be consistent.

     

Configure Specified Bridge Priority of the Instance

Configure the specified bridge priority of the spanning tree instance in the configuration pseudo information.

Table 9-31 Configure the specified bridge priority of the instance

Step

Command

Description

Enter the global configuration mode.

configure terminal

-

Configure entering the pseudo information

spanning-tree pseudo- information

Mandatory

Configure the specified bridge priority of the specified spanning tree instance in the pseudo information

mst instance instance-id designated-priority [priority-value]

Mandatory

By default, configure the specified bridge priority for each spanning tree instance in the pseudo information as 32768.

instance-id: The spanning tree instance ID, the value range is 0-63

priority-value: Configure the root bridge priority of the device in the specified spanning tree instance. The smaller the value, the higher the priority

note


  • The configuration step of the specified bridge priority value is 4096, which can be configured as: 0, 4096, 8192, 12288, 16384, 20480, 24576, 28672, 32768, 36864, 40960, 45056, 49152, 53248, 57344, 61440.

     

Configure Root Bridge Priority of Specified VLAN List

Configure the root bridge priority of the device in the specified VLAN list.

Table 9-32 Configure the root bridge priority of the specified VLAN list

Step

Command

Description

Enter the global configuration mode. configure terminal -

Configure entering the pseudo information

spanning-tree pseudo- information

Mandatory

Configure the root bridge priority of the device in the specified VLAN list

vist vlan vlan-list root- priority [priority-value]

Mandatory

By default, configure the root bridge priority of each VLAN in the pseudo information as 0 (the highest priority).

priority-value: Configure the root bridge priority of the device in the specified spanning tree instance. The smaller the value, the higher the priority

note


  • The configuration step of root bridge priority value is 4096, which can be configured as: 0, 4096, 8192, 12288, 16384, 20480, 24576, 28672, 32768, 36864, 40960, 45056, 49152, 53248, 57344, 61440.
  • On the MLAG paired device, the root bridge priorities of all VLANs configured in the pseudo information of the two devices must be consistent.

     

Configure Bridge Priority of Specified VLAN List

Configure the bridge priority of the device in the specified VLAN list.

Table 9-33 Configure the bridge priority of the specified VLAN list

Step

Command

Description

Enter the global configuration mode.

configure terminal

-

Configure entering the pseudo information

spanning-tree pseudo-information

Mandatory

Configure the bridge priority of the device in the specified VLAN list

vist vlan vlan-list designated-priority [priority-value]

Mandatory

By default, configure the specified bridge priority of each spanning tree instance in the pseudo information as 32768.

priority-value: Configure the root bridge priority of the device in the specified spanning tree instance. The smaller the value, the higher the priority

note


  • The configuration step of the specified bridge priority value is 4096, which can be configured as: 0, 4096, 8192, 12288, 16384, 20480, 24576, 28672, 32768, 36864, 40960, 45056, 49152, 53248, 57344, 61440.