Huawei AR530 Series - Page 259

Step 2 Run:
stp region-configuration
The MST region view is displayed.
Step 3 Run:
region-name name
The name of an MST region is configured.
By default, the MST region name is the MAC address of the management network interface on
the MPU of the switching device.
Step 4 Perform either of the following steps to configure VLAN-to-instance mappings.
l Run the instance instance-id vlan { vlan-id1 [ to vlan-id2 ] }&<1-10> command to configure
VLAN-to-instance mappings.
l Run the vlan-mapping modulo modulo command to enable VLAN-to-instance mapping
assignment based on a default algorithm.
By default, all VLANs in an MST region are mapped to MSTI 0.
NOTE
l The VLAN-to-instance mappings generated using the vlan-mapping modulo modulo commands
cannot meet network requirements. It is recommended that you run the instance instance-id vlan
{ vlan-id1 [ to vlan-id2 ] }&<1-10> command to configure VLAN-to-instance mappings.
l The vlan-mapping modulo specifies the formula (VLAN ID-1)%modulo+1. In the formula, (VLAN
ID-1)%modulo means the remainder of (VLAN ID-1) divided by the value of modulo. This formula
is used to map a VLAN to the corresponding MSTI. The calculation result of the formula is the ID of
the mapping MSTI.
Step 5 (Optional) Run:
revision-level level
The MSTP revision number is set.
By default, the MSTP revision number is 0.
If the revision number of the MST region is not 0, this step is necessary.
NOTICE
Changing MST region configurations (especially change of the VLAN mapping table) triggers
spanning tree recalculation and causes route flapping. Therefore:
l After configuring an MST region name, VLAN-to-instance mappings, and an MSTP revision
number, run the check region-configuration command in the MST region view to verify
the configuration. After confirming the region configurations, run the active region-
configuration command to activate MST region configurations.
l You are advised not to modify MST region parameters after the MST region is activated.
Step 6 Run:
active region-configuration
Huawei AR530&AR550 Series Industrial Switch Routers
Configuration Guide - Ethernet Switching
7 MSTP Configuration
Issue 01 (2014-11-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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