Basic Mstp Concepts - Huawei AR530 series Configuration Manual

Huawei AR530&AR550 Series Industrial Switch Routers
Configuration Guide - Ethernet Switching

7.2.2 Basic MSTP Concepts

MSTP Network Hierarchy
As shown in
region contains one or more MSTIs. An MSTI is a tree network consisting of switching devices
running STP, RSTP, or MSTP.
Figure 7-3 MSTP network hierarchy
MST Region
An MST region contains multiple switching devices and network segments between them. The
switching devices of one MST region have the following characteristics:
l
l
l
l
A LAN can comprise several MST regions that are directly or indirectly connected. Multiple
switching devices can be grouped into an MST region by using MSTP configuration commands.
As shown in
and has three MSTIs.
Issue 01 (2014-11-30)
Figure 7-3, the MSTP network consists of one or more MST regions. Each MST
MSTI1
MSTI2
MSTI0
MST Region
MSTI2
MSTP-enabled
Same region name
Same VLAN-MSTI mappings
Same MSTP revision level
Figure 7-4, the MST region D0 contains the switching devices S1, S2, S3, and S4,
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MSTP Network
MSTI2
MSTI1
MSTI0
MST Region
7 MSTP Configuration
MSTI1
MSTI0
MST Region
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