H3C【MSTP配置实验】

MSTP

STP/RSTP的缺陷：
所有vlan共享一颗生成树，阻塞链路被完全浪费，无法实现不同vlan在多条链路上负载分担

MSTP的定义：
多生成树协议，基于实例计算出多颗生成树，实例间实现负载分担

MSTP基本概念
1.MST域
定义：拥有相同MST配置标识的交换机构成的集合，划分区域可加快收敛速度和方便管理
相同域的必要条件：域名一致，修订级别一致，实例和映射关系一致

2.IST（内部生成树）：每个MST域独立计算的内部生成树实例，默认所有的vlan都映射在实例0

3.CST（公共生成树）：用来互联MST域的单生成树（把每个MST域作为一台交换机，计算出的生成树实例）

4.CIST（公共内部生成树）：CST+每个域的内部IST

5.CIST域根：每个IST的根网桥

6.CIST总根：整个CIST的根网桥

7.Master端口：CST的根端口，单域MSTP中不可能存在Master端口，多域MSTP中，根域不可能存在Master端口，其他域只有一个

MSTP配置要点
MSTP配置完成或修改MST配置后，一定要激活配置才能生效

MSTP兼容性问题
1.配置端口识别/发送MSTP报文格式：
自动识别 Auto
标准格式 dotls
与非标准兼容的格式 Legacy

2.摘要侦听：
其他产商设备可能使用私有密钥计算配置摘要
开启摘要侦听使设备不在对比配置摘要，但会导致只要域名和修订级别一致，vlan映射关系不一致也属于同一域，可全局开启也可接口开启

3.配置No Agreement Check特性
P/A机制问题：MSTP收到P/A位都置位的BPDU才会回复A位置位的BPDU，一个RSTP端口连接一个MSTP端口，RSTP的指定端口快速切换时只会发出P位BPDU，导致MSTP不会回应A位BPDU

配置No Agreement Check特性后，MSTP不再检查Propsal报文中的A位是否置位

								实验

实验需求：
1.所有交换机创建vlan10，vlan20，vlan30，vlan40
2.所有交换机之间的端口配置位Trunk，并放行相关vlan
3.按照图示分区域配置MSTP，并配置主备网桥

SW1配置
[H3C]sysname SW1
[SW1]vlan 10
[SW1-vlan10]vlan 20
[SW1-vlan20]vlan 30
[SW1-vlan30]vlan 40
[SW1-vlan40]int g1/0/1
[SW1-GigabitEthernet1/0/1]port link-type trunk
[SW1-GigabitEthernet1/0/1]port trunk permit vlan 10 20 30 40
[SW1-vlan40]int g1/0/2
[SW1-GigabitEthernet1/0/2]port link-type trunk
[SW1-GigabitEthernet1/0/2]port trunk permit vlan 10 20 30 40
[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
[SW1]stp instance 1 root primary
[SW1]stp instance 2 root secondary

SW2配置
[H3C]sysname SW2
[SW2]vlan 10
[SW2-vlan10]vlan 20
[SW2-vlan20]vlan 30
[SW2-vlan30]vlan 40
[SW2-vlan40]int g1/0/1
[SW2-GigabitEthernet1/0/1]port link-type trunk
[SW2-GigabitEthernet1/0/1]port trunk permit vlan 10 20 30 40
[SW2-vlan40]int g1/0/2
[SW2-GigabitEthernet1/0/2]port link-type trunk
[SW2-GigabitEthernet1/0/2]port trunk permit vlan 10 20 30 40
[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
[SW2]stp instance 1 root secondary
[SW2]stp instance 2 root primary

SW3配置
[H3C]sysname SW3
[SW3]vlan 10
[SW3-vlan10]vlan 20
[SW3-vlan20]vlan 30
[SW3-vlan30]vlan 40
[SW3-vlan40]int g1/0/1
[SW3-GigabitEthernet1/0/1]port link-type trunk
[SW3-GigabitEthernet1/0/1]port trunk permit vlan 10 20 30 40
[SW3-vlan40]int g1/0/2
[SW3-GigabitEthernet1/0/2]port link-type trunk
[SW3-GigabitEthernet1/0/2]port trunk permit vlan 10 20 30 40
[SW3-vlan40]int g1/0/3
[SW3-GigabitEthernet1/0/3]port link-type trunk
[SW3-GigabitEthernet1/0/3]port trunk permit vlan 10 20 30 40
[SW3-vlan40]int g1/0/4
[SW3-GigabitEthernet1/0/4]port link-type trunk
[SW3-GigabitEthernet1/0/4]port trunk permit vlan 10 20 30 40
[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

SW4配置
[H3C]sysname SW4
[SW4]vlan 10
[SW4-vlan10]vlan 20
[SW4-vlan20]vlan 30
[SW4-vlan30]vlan 40
[SW4-vlan40]int g1/0/1
[SW4-GigabitEthernet1/0/1]port link-type trunk
[SW4-GigabitEthernet1/0/1]port trunk permit vlan 10 20 30 40
[SW4-vlan40]int g1/0/2
[SW4-GigabitEthernet1/0/2]port link-type trunk
[SW4-GigabitEthernet1/0/2]port trunk permit vlan 10 20 30 40
[SW4-vlan40]int g1/0/3
[SW4-GigabitEthernet1/0/3]port link-type trunk
[SW4-GigabitEthernet1/0/3]port trunk permit vlan 10 20 30 40
[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
[SW4]stp instance 1 root primary
[SW4]stp instance 2 root secondary

SW5配置
[H3C]sysname SW5
[SW5]vlan 10
[SW5-vlan10]vlan 20
[SW5-vlan20]vlan 30
[SW5-vlan30]vlan 40
[SW5-vlan40]int g1/0/1
[SW5-GigabitEthernet1/0/1]port link-type trunk
[SW5-GigabitEthernet1/0/1]port trunk permit vlan 10 20 30 40
[SW5-vlan40]int g1/0/2
[SW5-GigabitEthernet1/0/2]port link-type trunk
[SW5-GigabitEthernet1/0/2]port trunk permit vlan 10 20 30 40
[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配置
[H3C]sysname SW6
[SW6]vlan 10
[SW6-vlan10]vlan 20
[SW6-vlan20]vlan 30
[SW6-vlan30]vlan 40
[SW6-vlan40]int g1/0/1
[SW6-GigabitEthernet1/0/1]port link-type trunk
[SW6-GigabitEthernet1/0/1]port trunk permit vlan 10 20 30 40
[SW6-vlan40]int g1/0/2
[SW6-GigabitEthernet1/0/2]port link-type trunk
[SW6-GigabitEthernet1/0/2]port trunk permit vlan 10 20 30 40
[SW6-vlan40]int g1/0/3
[SW6-GigabitEthernet1/0/3]port link-type trunk
[SW6-GigabitEthernet1/0/3]port trunk permit vlan 10 20 30 40
[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
[SW6]stp instance 1 root secondary
[SW6]stp instance 2 root primary

SW7配置
[H3C]sysname SW7
[SW7]vlan 10
[SW7-vlan10]vlan 20
[SW7-vlan20]vlan 30
[SW7-vlan30]vlan 40
[SW7-vlan40]int g1/0/1
[SW7-GigabitEthernet1/0/1]port link-type trunk
[SW7-GigabitEthernet1/0/1]port trunk permit vlan 10 20 30 40
[SW7-vlan40]int g1/0/2
[SW7-GigabitEthernet1/0/2]port link-type trunk
[SW7-GigabitEthernet1/0/2]port trunk permit vlan 10 20 30 40
[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

实验二
实验需求：
1.网络中存在vlan10，vlan20，vlan30，vlan40，可以再所有链路上传输
2.通过配置MSTP防止二层环路，并实现流量负载
3.所有交换机配置再一个MST域中，域名为h3c，修订级别为1，创建instance1映射vlan10和vlan20，创建instance2映射vlan30和vlan40
4.SW1配置为instance1的主根和instance2的备份，SW2配置instance2的主根和instance1的备份根
在这里插入图片描述

SW1配置
[H3C]sysname SW1
[SW1]vlan 10
[SW1-vlan10]vlan  20
[SW1-vlan20]vlan 30
[SW1-vlan30]vlan 40
[SW1-vlan40]int g1/0/1
[SW1-GigabitEthernet1/0/1]port link-type trunk
[SW1-GigabitEthernet1/0/1]port trunk permit vlan 10 20 30 40
[SW1-vlan40]int g1/0/2
[SW1-GigabitEthernet1/0/2]port link-type trunk
[SW1-GigabitEthernet1/0/2]port trunk permit vlan 10 20 30 40
[SW1-vlan40]int g1/0/3
[SW1-GigabitEthernet1/0/3]port link-type trunk
[SW1-GigabitEthernet1/0/3]port trunk permit vlan 10 20 30 40
[SW1]stp region-configuration
[SW1-mst-region]region-name h3c
[SW1-mst-region]region-name
[SW1-mst-region]revision-level 1
[SW1-mst-region]instance 1 vlan 10 20
[SW1-mst-region]instance 2 vlan 30 40
[SW1]stp instance 1 root  primary
[SW1]stp instance 2 root secondary

SW2配置
[H3C]sysname SW2
[SW2]vlan 10
[SW2-vlan10]vlan  20
[SW2-vlan20]vlan 30
[SW2-vlan30]vlan 40
[SW2-vlan40]int g1/0/1
[SW2-GigabitEthernet1/0/1]port link-type trunk
[SW2-GigabitEthernet1/0/1]port trunk permit vlan 10 20 30 40
[SW2-vlan40]int g1/0/2
[SW2-GigabitEthernet1/0/2]port link-type trunk
[SW2-GigabitEthernet1/0/2]port trunk permit vlan 10 20 30 40
[SW2-vlan40]int g1/0/3
[SW2-GigabitEthernet1/0/3]port link-type trunk
[SW2-GigabitEthernet1/0/3]port trunk permit vlan 10 20 30 40
[SW2]stp region-configuration
[SW2-mst-region]region-name h3c
[SW2-mst-region]region-name
[SW2-mst-region]revision-level 1
[SW2-mst-region]instance 1 vlan 10 20
[SW2-mst-region]instance 2 vlan 30 40
[SW2]stp instance 2 root  primary
[SW2]stp instance 1 root secondary
SW3配置
[H3C]sysname SW3
[SW3]vlan 10
[SW3-vlan10]vlan  20
[SW3-vlan20]vlan 30
[SW3-vlan30]vlan 40
[SW3-vlan40]int g1/0/1
[SW3-GigabitEthernet1/0/1]port link-type trunk
[SW3-GigabitEthernet1/0/1]port trunk permit vlan 10 20 30 40
[SW3-vlan40]int g1/0/2
[SW3-GigabitEthernet1/0/2]port link-type trunk
[SW3-GigabitEthernet1/0/2]port trunk permit vlan 10 20 30 40
[SW3]stp region-configuration
[SW3-mst-region]region-name h3c
[SW3-mst-region]region-name
[SW3mst-region]revision-level 1
[SW3-mst-region]instance 1 vlan 10 20
[SW3-mst-region]instance 2 vlan 30 40

SW4配置
[H3C]sysname SW4
[SW4]vlan 10
[SW4-vlan10]vlan  20
[SW4-vlan20]vlan 30
[SW4-vlan30]vlan 40
[SW4-vlan40]int g1/0/1
[SW4-GigabitEthernet1/0/1]port link-type trunk
[SW4-GigabitEthernet1/0/1]port trunk permit vlan 10 20 30 40
[SW4-vlan40]int g1/0/2
[SW4-GigabitEthernet1/0/2]port link-type trunk
[SW4-GigabitEthernet1/0/2]port trunk permit vlan 10 20 30 40
[SW4]stp region-configuration
[SW43-mst-region]region-name h3c
[SW4-mst-region]region-name
[SW4mst-region]revision-level 1
[SW4-mst-region]instance 1 vlan 10 20
[SW4-mst-region]instance 2 vlan 30 40

H3C【MSTP配置实验】

MSTP

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