H3C MSTP 实验

实验拓扑

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实验需求

1. 所有交换机上创建 Vlan10，Vlan20，Vlan30 和 Vlan40
2. 所有交换机之间的端口配置为 Trunk，并放行相关 VLAN
3. 按照图示分区域配置 MSTP，并配置主备根网桥

实验步骤

VLAN基础配置（略）

在所有交换机上创建 Vlan10，Vlan20，Vlan30 和 Vlan40

在所有交换机之间的端口配置为 Trunk，并放行Vlan10，Vlan20，Vlan30 和 Vlan40

#
vlan 10
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vlan 20
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vlan 30
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vlan 40
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interface GigabitEthernet1/0/1port link-type trunkundo port trunk permit vlan 1port trunk permit vlan 10 20 30 40
#
interface GigabitEthernet1/0/2port link-type trunkundo port trunk permit vlan 1port trunk permit vlan 10 20 30 40
#
interface GigabitEthernet1/0/3port link-type trunkundo port trunk permit vlan 1port trunk permit vlan 10 20 30 40
#
interface GigabitEthernet1/0/4port link-type trunkundo port trunk permit vlan 1port trunk permit vlan 10 20 30 40
#

按照图示分区域配置 MSTP，并配置主备根网桥

分析

根据图示，网络中存在 3 个 MST 区域。交换机属于同一个 MST 区域的必要条件是域名、修订级别、实例和 VLAN 的映射关系一致，所以SW1，SW2，SW3 的配置需要一致，SW4，SW5，SW6 的配置一致，SW7 单独配置
另外，根据需求，H3C1 区域中的 实例1 映射 Vlan10 和 Vlan20，实例2 映射 Vlan30 和 Vlan40；SW1 和 SW2 分别为两个实例的主备根网桥。其他 VLAN 均映射在默认的 Instance0
　　H3C2 区域中的 实例1 映射 Vlan10，实例2 映射 Vlan20，SW4 和 SW6 分别为两个实例的主备根网桥。其他 VLAN 均映射在默认的 Instance0
　　H3C3 区域中的 实例1 映射 Vlan20，实例2 映射 Vlan40，SW7 为两个实例的主备根网桥。其他 VLAN 均映射在默认的 Instance0

SW1，SW2，SW3 的MST配置

[SW1]stp region-configuration 
[SW1-mst-region]region-name H3C1
[SW1-mst-region]revision-level 1
[SW1-mst-region]instance 1 vlan 10 20
[SW1-mst-region]instance 2 vlan 30 40
[SW1-mst-region]active region-configuration [SW2]stp region-configuration
[SW2-mst-region] region-name H3C1
[SW2-mst-region] revision-level 1
[SW2-mst-region] instance 1 vlan 10 20 
[SW2-mst-region] instance 2 vlan 30 40 
[SW2-mst-region] active region-configuration[SW3]stp region-configuration
[SW3-mst-region] region-name H3C1
[SW3-mst-region] revision-level 1
[SW3-mst-region] instance 1 vlan 10 20 
[SW3-mst-region] instance 2 vlan 30 40 
[SW3-mst-region] active region-configuration

在 SW1 上配置为 实例1 的主根和 实例2 的备份根

[SW1]stp instance 1 root primary 
[SW1]stp instance 2 root secondary 

在 SW2 上配置为 实例1 的备份根和 实例2 的主根

[SW2]stp instance 1 root secondary 
[SW2]stp instance 2 root primary 

SW4，SW5，SW6 的MST配置

[SW4]stp region-configuration
[SW4-mst-region] region-name H3C2
[SW4-mst-region] revision-level 2
[SW4-mst-region] instance 1 vlan 10
[SW4-mst-region] instance 2 vlan 30
[SW4-mst-region] active region-configuration[SW5]stp region-configuration
[SW5-mst-region] region-name H3C2
[SW5-mst-region] revision-level 2
[SW5-mst-region] instance 1 vlan 10
[SW5-mst-region] instance 2 vlan 30
[SW5-mst-region] active region-configuration[SW6]stp region-configuration
[SW6-mst-region] region-name H3C2
[SW6-mst-region] revision-level 2
[SW6-mst-region] instance 1 vlan 10
[SW6-mst-region] instance 2 vlan 30
[SW6-mst-region] active region-configuration

在 SW4 上配置为 实例1 的主根和 实例2 的备份根

[SW4]stp instance 1 root primary 
[SW4]stp instance 2 root secondary 

在 SW6 上配置为 实例1 的备份根和 实例2 的主根

[SW6]stp instance 1 root secondary 
[SW6]stp instance 2 root primary 

SW7 MST配置

[SW7]stp region-configuration
[SW7-mst-region] region-name H3C3
[SW7-mst-region] revision-level 3
[SW7-mst-region] instance 1 vlan 20
[SW7-mst-region] instance 2 vlan 40
[SW7-mst-region] active region-configuration

实验验证

查询各交换STP端口状态

[SW1]display stp brief MST ID   Port                                Role  STP State   Protection0        GigabitEthernet1/0/1                DESI  FORWARDING  NONE0        GigabitEthernet1/0/2                DESI  FORWARDING  NONE1        GigabitEthernet1/0/1                DESI  FORWARDING  NONE1        GigabitEthernet1/0/2                DESI  FORWARDING  NONE2        GigabitEthernet1/0/1                ROOT  FORWARDING  NONE2        GigabitEthernet1/0/2                DESI  FORWARDING  NONE

[SW2]display stp briefMST ID   Port                                Role  STP State   Protection0        GigabitEthernet1/0/1                ROOT  FORWARDING  NONE0        GigabitEthernet1/0/2                DESI  FORWARDING  NONE1        GigabitEthernet1/0/1                ROOT  FORWARDING  NONE1        GigabitEthernet1/0/2                DESI  FORWARDING  NONE2        GigabitEthernet1/0/1                DESI  FORWARDING  NONE2        GigabitEthernet1/0/2                DESI  FORWARDING  NONE

[SW3]display stp briefMST ID   Port                                Role  STP State   Protection0        GigabitEthernet1/0/1                ROOT  FORWARDING  NONE0        GigabitEthernet1/0/2                ALTE  DISCARDING  NONE0        GigabitEthernet1/0/3                DESI  FORWARDING  NONE0        GigabitEthernet1/0/4                DESI  FORWARDING  NONE1        GigabitEthernet1/0/1                ROOT  FORWARDING  NONE1        GigabitEthernet1/0/2                ALTE  DISCARDING  NONE1        GigabitEthernet1/0/3                DESI  FORWARDING  NONE1        GigabitEthernet1/0/4                DESI  FORWARDING  NONE2        GigabitEthernet1/0/1                ALTE  DISCARDING  NONE2        GigabitEthernet1/0/2                ROOT  FORWARDING  NONE2        GigabitEthernet1/0/3                DESI  FORWARDING  NONE2        GigabitEthernet1/0/4                DESI  FORWARDING  NONE

[SW4]display stp briefMST ID   Port                                Role  STP State   Protection0        GigabitEthernet1/0/1                ROOT  FORWARDING  NONE0        GigabitEthernet1/0/2                DESI  FORWARDING  NONE0        GigabitEthernet1/0/3                DESI  FORWARDING  NONE1        GigabitEthernet1/0/1                MAST  FORWARDING  NONE1        GigabitEthernet1/0/2                DESI  FORWARDING  NONE1        GigabitEthernet1/0/3                DESI  FORWARDING  NONE2        GigabitEthernet1/0/1                MAST  FORWARDING  NONE2        GigabitEthernet1/0/2                DESI  FORWARDING  NONE2        GigabitEthernet1/0/3                ROOT  FORWARDING  NONE

[SW5]display stp briefMST ID   Port                                Role  STP State   Protection0        GigabitEthernet1/0/1                ROOT  FORWARDING  NONE0        GigabitEthernet1/0/2                DESI  FORWARDING  NONE1        GigabitEthernet1/0/1                ROOT  FORWARDING  NONE1        GigabitEthernet1/0/2                ALTE  DISCARDING  NONE2        GigabitEthernet1/0/1                ALTE  DISCARDING  NONE2        GigabitEthernet1/0/2                ROOT  FORWARDING  NONE

[SW6]display stp briefMST ID   Port                                Role  STP State   Protection0        GigabitEthernet1/0/1                ALTE  DISCARDING  NONE0        GigabitEthernet1/0/2                ROOT  FORWARDING  NONE0        GigabitEthernet1/0/3                DESI  FORWARDING  NONE1        GigabitEthernet1/0/1                DESI  FORWARDING  NONE1        GigabitEthernet1/0/2                ROOT  FORWARDING  NONE1        GigabitEthernet1/0/3                DESI  FORWARDING  NONE2        GigabitEthernet1/0/1                DESI  FORWARDING  NONE2        GigabitEthernet1/0/2                DESI  FORWARDING  NONE2        GigabitEthernet1/0/3                DESI  FORWARDING  NONE

[SW7]display stp briefMST ID   Port                                Role  STP State   Protection0        GigabitEthernet1/0/1                ROOT  FORWARDING  NONE0        GigabitEthernet1/0/2                ALTE  DISCARDING  NONE1        GigabitEthernet1/0/1                MAST  FORWARDING  NONE1        GigabitEthernet1/0/2                ALTE  DISCARDING  NONE2        GigabitEthernet1/0/1                MAST  FORWARDING  NONE2        GigabitEthernet1/0/2                ALTE  DISCARDING  NONE

描绘STP拓扑

实例0 STP拓扑

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实例1 STP拓扑

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实例2 STP拓扑

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实验附件

H3C MSTP实验.zip

STP拓扑.drawio

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