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Examples
# In PVST mode, globally enable the spanning tree feature and then enable the spanning tree
feature for VLAN 2.
<Sysname> system-view
[Sysname] stp mode pvst
[Sysname] stp global enable
[Sysname] stp vlan 2 enable
Related commands
stp enable
stp global enable
stp mode
vlan-mapping modulo
Use vlan-mapping modulo to map VLANs in an MST region to MSTIs according to the specified
modulo value and quickly create a VLAN-to-instance mapping table.
Syntax
vlan-mapping modulo modulo
Default
All VLANs are mapped to the CIST (MSTI 0).
Views
MST region view
Predefined user roles
network-admin
Parameters
modulo: Specifies the modulo value. The value range for the modulo argument is 1 to 64.
Usage guidelines
You cannot map a VLAN to different MSTIs. If you map a VLAN that has been mapped to an MSTI to
a new MSTI, the old mapping is automatically deleted.
This command maps each VLAN to the MSTI with ID (VLAN ID – 1) % modulo + 1. (VLAN ID – 1) %
modulo is the modulo operation for (VLAN ID – 1). If the modulo value is 15, then VLAN 1 is mapped
to MSTI 1, VLAN 2 to MSTI 2, …, VLAN 15 to MSTI 15, VLAN 16 to MSTI 16, and so on.
Examples
# Map VLANs to MSTIs as per modulo 8.
<Sysname> system-view
[Sysname] stp region-configuration
[Sysname-mst-region] vlan-mapping modulo 8
Related commands
active region-configuration
check region-configuration
display stp region-configuration
region-name