H3C 多生成树MSTP
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[高1]
%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[高2] //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
1. MST 域
2. MSTI
3. VLAN 映射表
4. IST
5. CST
6. CIST
7. 域根
8. 总根
9. 端口角色
对上面的参数进行本实验的总结：
1.MST域：本实验有4个MST 域，分别是wnt、gao、cheng、wang。
2.MSTI：一个生成树实例，例如：wnt域中的所有实例1的集合。
3.Vlan映射表：就是实例
4.IST：下图介绍
5.CIT:下图介绍
6.CIST:下图介绍
7.域根：有4个，多个域根相连组成一个CIST域
8.总根：有1个。
9.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
关闭生成树：stp disable
在接口上设置也是如此：
[SWA-Ethernet1/0/4] stp enable 开启
[SWA-Ethernet1/0/4] stp disable 关闭
关闭边界端口属性：stp edged-port disable
