华三实验大全之多生成树-MSTP

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华三实验大全之多生成树-MSTP

一.单域多生成树的配置

二.多域生成树的配置

一.单域多生成树的配置

实验目的：

创建多生成树的域

创建实例----相当于捆绑在一起的vlan

实现负载均衡

实验步骤

开启STP---创建vlan---配置的MST域---开启trunk链路

[gaocw1]vlan 2 to 30 //创建vlan 2 到30

请等待...... 完成.

[gaocw1]stp enable //开启生成树协议

[gaocw1]stp region-configuration //进入MST 域视图

[gaocw1-mst-region]region-name wang //配置MST域名

[gaocw1-mst-region]instance 1 vlan 2 to 10 //配置生成树实例

[gaocw1-mst-region]instance 2 vlan 11 to 20

[gaocw1-mst-region]instance 3 vlan 21 to 30

[gaocw1-mst-region]active region-configuration

此处我没有设置修订值，因为默认修订值都是0，不

影响我们设置单域！

介绍几个域内的命令

check region-configuration ：本命令用来显示尚未激活的

MST 域的配置信息，

revision-level ：命令用来配置交换机的MSTP 修订级别

查看MST与的信息

[gaocw1]display stp region-configuration

操作值：

格式选择符 :0

域名 :wang

修订级别 :0

实例映射的VLAN

0 1, 31 to 4094

1 2 to 10

2 11 to 20

3 21 to 30

[gaocw1]int e1/0/2

[gaocw1-Ethernet1/0/2]port link-type trunk

[gaocw1-Ethernet1/0/2]port trunk permit vlan all

请等待........................................... 完成.

[gaocw1-Ethernet1/0/6]port link-type trunk

[gaocw1-Ethernet1/0/6]port trunk permit vlan all

请等待........................................... 完成.

配置sw2的过程同sw1

[gaocw2]vlan 2 to 30

请等待...... 完成.

[gaocw2]stp enable

%2000/4/2 00:07:15:646 gaocw2 MSTP/3/STPSTART:- 1 -设备启用生成树功能

[gaocw2]stp region-configuration

[gaocw2-mst-region]region-name wang

[gaocw2-mst-region]instance 1 vlan 2 to 10

[gaocw2-mst-region]instance 2 vlan 11 to 20

[gaocw2-mst-region]instance 3 vlan 21 to 30

[gaocw2-mst-region]active region-configuration

[gaocw2]display stp region-configuration

操作值：

格式选择符 :0

域名 :wang

修订级别 :0

实例映射的VLAN

0 1, 31 to 4094

1 2 to 10

2 11 to 20

3 21 to 30

[gaocw2]int e1/0/2

[gaocw2-Ethernet1/0/2]port link-type trunk

[gaocw2-Ethernet1/0/2]port trunk permit vlan all

请等待........................................... 完成.

[gaocw2]int e1/0/4

[gaocw2-Ethernet1/0/4]port link-type trunk

[gaocw2-Ethernet1/0/4]port trunk permit vlan all

请等待........................................... 完成.

配置sw3的过程同sw1

[H3C]sys gaocw3

[gaocw3]stp enable

%2000/4/2 00:14:33:275 gaocw3 MSTP/3/STPSTART:- 1 -设备启用生成树功能

[gaocw3]vlan 2 to 30

请等待...... 完成.

[gaocw3]stp region-configuration

[gaocw3-mst-region]region-name wang

[gaocw3-mst-region]instance 1 vlan 2 to 10

[gaocw3-mst-region]instance 2 vlan 11 to 20

[gaocw3-mst-region]instance 3 vlan 21 to 30

[gaocw3-mst-region]active region-configuration

[gaocw3]display stp region-configuration

操作值：

格式选择符 :0

域名 :wang

修订级别 :0

实例映射的VLAN

0 1, 31 to 4094

1 2 to 10

2 11 to 20

3 21 to 30

[gaocw3]int e1/0/4

[gaocw3-Ethernet1/0/4]port link-type trunk

[gaocw3-Ethernet1/0/4]port trunk permit vlan all

请等待........................................... 完成.

[gaocw3]int e1/0/6

[gaocw3-Ethernet1/0/6]port link-type trunk

[gaocw3-Ethernet1/0/6]port trunk permit vlan all

请等待........................................... 完成.

当我们都设置完后，就可以看一下配置的情况，从sw1看起！

[gaocw1]display stp brief

MSTID 端口角色 STP状态保护类型

0 Ethernet1/0/2 ROOT FORWARDING NONE

0 Ethernet1/0/6 ALTE DISCARDING NONE

1 Ethernet1/0/2 ROOT FORWARDING NONE

1 Ethernet1/0/6 ALTE DISCARDING NONE

2 Ethernet1/0/2 ROOT FORWARDING NONE

2 Ethernet1/0/6 ALTE DISCARDING NONE

3 Ethernet1/0/2 ROOT FORWARDING NONE

3 Ethernet1/0/6 ALTE DISCARDING NONE

[gaocw2]display stp brief

MSTID 端口角色 STP状态保护类型

0 Ethernet1/0/2 DESI FORWARDING NONE

0 Ethernet1/0/4 DESI FORWARDING NONE

1 Ethernet1/0/2 DESI FORWARDING NONE

1 Ethernet1/0/4 DESI FORWARDING NONE

2 Ethernet1/0/2 DESI FORWARDING NONE

2 Ethernet1/0/4 DESI FORWARDING NONE

3 Ethernet1/0/2 DESI FORWARDING NONE

3 Ethernet1/0/4 DESI FORWARDING NONE

[gaocw3]display stp brief

MSTID 端口角色 STP状态保护类型

0 Ethernet1/0/4 ROOT FORWARDING NONE

0 Ethernet1/0/6 DESI FORWARDING NONE

1 Ethernet1/0/4 ROOT FORWARDING NONE

1 Ethernet1/0/6 DESI FORWARDING NONE

2 Ethernet1/0/4 ROOT FORWARDING NONE

2 Ethernet1/0/6 DESI FORWARDING NONE

3 Ethernet1/0/4 ROOT FORWARDING NONE

3 Ethernet1/0/6 DESI FORWARDING NONE

总结，此时我们看到的是--sw2是所有实例的跟桥，包括系统自动生成的实例0

所以不符合我们所说的负责均衡！

接下来，实现MSTP的负载均衡功能

[gaocw1]int e1/0/1

[gaocw1-Ethernet1/0/1]stp edged-port enable //配置连接终端设备的端口为域边界端口！

[gaocw1]stp instance 2 root ?

primary 主根交换机

secondary 备份根交换机

[gaocw1]stp instance 2 root primary //让sw1为实例二的主根桥，

[gaocw1]stp instance 3 root secondary //让sw1为实例三的备份跟桥。

[gaocw3]stp instance 2 root secondary //让sw3为实例二的备份跟桥

[gaocw3]stp instance 3 root primary //让sw1为实例三的主根桥

现在查看----就实现了负载分担功能

[gaocw2]display stp brief

MSTID 端口角色 STP状态保护类型

0 Ethernet1/0/2 DESI FORWARDING NONE

0 Ethernet1/0/4 DESI FORWARDING NONE

1 Ethernet1/0/2 DESI FORWARDING NONE

1 Ethernet1/0/4 DESI FORWARDING NONE

2 Ethernet1/0/2 ROOT FORWARDING NONE

2 Ethernet1/0/4 ALTE DISCARDING NONE

3 Ethernet1/0/2 ALTE DISCARDING NONE

3 Ethernet1/0/4 ROOT FORWARDING NONE

[gaocw1]display stp brief

MSTID 端口角色 STP状态保护类型

0 Ethernet1/0/2 ROOT FORWARDING NONE

0 Ethernet1/0/6 ALTE DISCARDING NONE

1 Ethernet1/0/2 ROOT FORWARDING NONE

1 Ethernet1/0/6 ALTE DISCARDING NONE

2 Ethernet1/0/2 DESI FORWARDING NONE

2 Ethernet1/0/6 DESI FORWARDING NONE

3 Ethernet1/0/2 DESI FORWARDING NONE

3 Ethernet1/0/6 ROOT FORWARDING NONE

二.多域生成树的配置

通过此拓扑来实现多区域的生成树设置

上图的补充，因为模拟器没有合适的实验拓扑。

实验步骤

开启stp--创建vlan---配置mstp域---开启trunk链路

配置sw1,--实例2 to 5-----域名：wnt

[sw1]vlan 2 to 30

Please wait... Done.

[sw1]stp region-configuration

[sw1-mst-region]instance 1 vlan 2 to 5

[sw1-mst-region]region-name wnt

[sw1-mst-region]active region-configuration

[sw1]display stp region-configuration

Oper configuration

Format selector :0

Region name :wnt

Revision level :0

Instance Vlans Mapped

0 1, 6 to 4094

1 2 to 5

sw1]int e0/4/4

[sw1-Ethernet0/4/4]port link-type trunk

[sw1-Ethernet0/4/4]port trunk permit vlan all

[sw1]int e0/4/3

[sw1-Ethernet0/4/3]port link-type trunk

[sw1-Ethernet0/4/3]port trunk permit vlan all

配置sw2---实例2 to 6----域名：gao

[sw2]vlan 2 to 10

Please wait... Done.

[sw2]stp region-configuration

[sw2-mst-region]instance 1 vlan 2 to 6

[sw2-mst-region]region-name gao

[sw2-mst-region]active re

[sw2]int e0/4/3

[sw2-Ethernet0/4/3]port link-type trunk

[sw2-Ethernet0/4/3]port trunk permit vlan all

Please wait........................................... Done.

[sw2]int e0/4/6

[sw2-Ethernet0/4/6]port link-type trunk

[sw2-Ethernet0/4/6]port trunk permit vlan all

Please wait........................................... Done.

[sw2]display stp brief

MSTID Port Role STP State Protection

0 Ethernet0/4/3 ROOT FORWARDING NONE

0 Ethernet0/4/6 DESI FORWARDING NONE

1 Ethernet0/4/3 MAST FORWARDING NONE

1 Ethernet0/4/6 DESI FORWARDING NONE

配置sw3---实例2 to 7---域名：cheng

[sw3]vlan 2 to 10

Please wait... Done.

[sw3]stp region-configuration

[sw3-mst-region]instance 1 vlan 2 to 7

[sw3-mst-region]region-name cheng

[sw3-mst-region]active region-configuration

[sw3]int e0/4/4

[sw3-Ethernet0/4/4]port link-type trunk

[sw3-Ethernet0/4/4]port trunk permit vlan all

Please wait........................................... Done.

[sw3-Ethernet0/4/4]int e0/4/7

[sw3-Ethernet0/4/7]port link-type trunk

[sw3-Ethernet0/4/7]port trunk permit vlan all

Please wait........................................... Done.

[sw3]display stp brief

MSTID Port Role STP State Protection

0 Ethernet0/4/4 ROOT FORWARDING NONE

0 Ethernet0/4/7 DESI FORWARDING NONE

1 Ethernet0/4/4 MAST FORWARDING NONE

1 Ethernet0/4/7 DESI FORWARDING NONE

配置sw4--实例2 to 8----域名：wang

[sw4]vlan 2 to 10

[sw4]stp region-configuration

[sw4-mst-region]instance 1 vlan 2 to 8

[sw4-mst-region]region-name wang

[sw4-mst-region]active region-configuration

[sw4]display stp region-configuration

Oper configuration

Format selector :0

Region name :wang

Revision level :0

Instance Vlans Mapped

0 1, 9 to 4094

1 2 to 8

[sw4]int e0/4/7

[sw4-Ethernet0/4/7]port link-type trunk

[sw4-Ethernet0/4/7]port trunk permit vlan all

Please wait........................................... Done.

[sw4-Ethernet0/4/7]int e0/4/6

[sw4-Ethernet0/4/6]port link-type trunk

[sw4-Ethernet0/4/6]port trunk permit vlan al

Please wait........................................... Done.

[sw4]display stp brief

MSTID Port Role STP State Protection

0 Ethernet0/4/6 ROOT FORWARDING NONE

0 Ethernet0/4/7 ALTE DISCARDING NONE

1 Ethernet0/4/6 MAST FORWARDING NONE

1 Ethernet0/4/7 ALTE DISCARDING NON

然后个vlan2配置ip地址，他们是可以ping通的！从而实现了不同域之间的通信！！

MSTP域内的参数---------------对应本实验

MST 域

MSTI

VLAN 映射表

IST

CST

CIST

域根

总根

9. 端口角色

对上面的参数进行本实验的总结：

MST域：本实验有4个MST 域，分别是wnt、gao、cheng、wang。

MSTI：一个生成树实例，例如：wnt域中的所有实例1的集合。

Vlan映射表：就是实例

IST：下图介绍

CIT:下图介绍

CIST:下图介绍

域根：有4个，多个域根相连组成一个CIST域

总根：有1个。

端口状态

sw4中的e0/4/7属于整个大域（CIST）的阻塞端口！

Master 端口是连接MST 域到总根的端口，位于整个域到总根的最短路径上。

就相当于我们在单域中所说的根端口

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