Huawei AR530 series Configuration Manual page 241

Huawei AR530&AR550 Series Industrial Switch Routers
Configuration Guide - Ethernet Switching
Figure 7-4 MST region
D0
VLAN Mapping Table
The VLAN mapping table is an attribute of the MST region. It describes mappings between
VLANs and MSTIs.
As shown in
as follows:
l
l
l
Regional Root
Regional roots are classified into Internal Spanning Tree (IST) and MSTI regional roots.
In the region B0, C0, and D0 on the network shown in
to the Common and Internal Spanning Tree (CIST) root are IST regional roots.
An MST region can contain multiple spanning trees, each called an MSTI. An MSTI regional
root is the root of the MSTI. On the network shown in
regional root.
Issue 01 (2014-11-30)
AP1
S2
S4
Figure 7-4, the mappings in the VLAN mapping table of the MST region D0 are
VLAN 1 is mapped to MSTI 1.
VLAN 2 and VLAN 3 are mapped to MSTI 2.
Other VLANs are mapped to MSTI 0.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
S1
Master Bridge
S3
Figure
Figure
7 MSTP Configuration
MSTI1
root switch:S3
MSTI2
root switch:S2
MSTI0 (IST)
root switch:S1
VLAN1 MSTI1
VLAN2,VLAN3 MSTI2
other VLANs MSTI0
7-6, the switching devices closest
7-5, each MSTI has its own
227