在假期

要求：使用MSTP多生成树从逻辑上消除环路
配置VRRP虚拟路由器协议，实现备份
采用OSPF路由协议实现互通

1、PC 地址配置

PC IP地址 子网掩码 网关
PC_10 192.168.40.5 255.255.255.0 192.168.40.1
PC_6 192.168.20.5 255.255.255.0 192.168.20.2
PC_7 192.168.30.5 255.255.255.0 192.168.30.2
PC_8 192.168.20.6 255.255.255.0 192.168.20.3
PC_9 192.168.30.6 255.255.255.0 192.168.30.3

PC6 PC7的网关均为SWA
根据拓扑PC8 PC9的网关均为SWB
在此先这样配置，以便于验证基础网络配置是否正常

2、RT配置-基础IP地址配置

<H3C>sy
[H3C]sysn RT-ZXB
[RT-ZXB]i g5/0
[RT-ZXB-GigabitEthernet5/0]ip a 192.168.40.1 24
[RT-ZXB-GigabitEthernet5/0]in g0/1
[RT-ZXB-GigabitEthernet0/1]ip a 3.3.1.2 24
[RT-ZXB-GigabitEthernet0/1]in g0/0
[RT-ZXB-GigabitEthernet0/0]ip a 3.3.2.2 24

2.1 SWA 此处先配置互联地址和VLAN

<H3C>sy
[H3C]sysn SWA-ZXB
[SWA-ZXB]v 100
[SWA-ZXB-vlan100]port g1/0/10
[SWA-ZXB-vlan100]int v 100
[SWA-ZXB-Vlan-interface100]ip a 3.3.1.1 24
[SWA-ZXB-Vlan-interface100]v 2
[SWA-ZXB-vlan2]int v 2
[SWA-ZXB-Vlan-interface2]ip a 192.168.20.2 24
[SWA-ZXB-Vlan-interface2]v 3
[SWA-ZXB-vlan3]int v 3
[SWA-ZXB-Vlan-interface3]ip a 192.168.30.2 24

2.2 SWB

<H3C>sy
[H3C]sysn SWB-ZXB
[SWB-ZXB]v 100
[SWB-ZXB-vlan100]port g1/0/10
[SWB-ZXB-vlan100]int v 100
[SWB-ZXB-Vlan-interface100]ip a 3.3.2.1 24
[SWB-ZXB-Vlan-interface100]v 2
[SWB-ZXB-vlan2]int v 2
[SWB-ZXB-Vlan-interface2]ip a 192.168.20.3 24
[SWB-ZXB-Vlan-interface2]v 3
[SWB-ZXB-vlan3]int v 3
[SWB-ZXB-Vlan-interface3]ip a 192.168.30.3 24

SW1、SW2仅需声明VLAN

2.3 SW1

<H3C>sy
[H3C]sysn SW1-ZXB
[SW1-ZXB]v 2
[SW1-ZXB-vlan2]port g1/0/10
[SW1-ZXB-vlan2]v 3
[SW1-ZXB-vlan3]port g1/0/20

2.4 SW2

<H3C>sy
[H3C]sysn SW2-ZXB
[SW2-ZXB]v 2
[SW2-ZXB-vlan2]port g1/0/10
[SW2-ZXB-vlan2]v 3
[SW2-ZXB-vlan3]port g1/0/20

3、配置 Trunk

3.1 SWA

[SWA-ZXB]int range g1/0/1 to g1/0/3
[SWA-ZXB-if-range]port link-type t
[SWA-ZXB-if-range]port t p v a

3.2 SWB

[SWB-ZXB]int range g1/0/1 to g1/0/3
[SWB-ZXB-if-range]port link-t t
[SWB-ZXB-if-range]port t p v a

3.3 SW1

[SW1-ZXB]int range g1/0/2 to g1/0/3
[SW1-ZXB-if-range]port link-t t
[SW1-ZXB-if-range]port t p v a

3.4 SW2

[SW2-ZXB]int range g1/0/2 to g1/0/3
[SW2-ZXB-if-range]port link-t t
[SW2-ZXB-if-range]port t p v a

4、配置 OSPF

4.1 RT

[RT-ZXB]ospf
[RT-ZXB-ospf-1]a 0
[RT-ZXB-ospf-1-area-0.0.0.0]n 3.3.1.2 0.0.0.0
[RT-ZXB-ospf-1-area-0.0.0.0]n 3.3.2.2 0.0.0.0
[RT-ZXB-ospf-1-area-0.0.0.0]q
[RT-ZXB-ospf-1]i d

4.2 SWA

[SWA-ZXB]ospf
[SWA-ZXB-ospf-1]a 0
[SWA-ZXB-ospf-1-area-0.0.0.0]n 3.3.1.1 0.0.0.0
[SWA-ZXB-ospf-1-area-0.0.0.0]q
[SWA-ZXB-ospf-1]i d

4.3 SWB

[SWB-ZXB]ospf
[SWB-ZXB-ospf-1]a 0
[SWB-ZXB-ospf-1-area-0.0.0.0]n 3.3.2.1 0.0.0.0
[SWB-ZXB-ospf-1-area-0.0.0.0]q
[SWB-ZXB-ospf-1]i d

5、配置 MSTP

5.1 SWA

[SWA-ZXB]stp g e # 全局启用STP
[SWA-ZXB]s m m # STP模式MSTP
[SWA-ZXB]stp re # STP域配置
[SWA-ZXB-mst-region]reg 17 # STP域名
[SWA-ZXB-mst-region]rev 1 # 修订级别
[SWA-ZXB-mst-region]ins 1 v 2 # 实例1配置
[SWA-ZXB-mst-region]ins 2 v 3 # 实例2配置
[SWA-ZXB-mst-region]ac re # 激活域配置
[SWA-ZXB-mst-region]stp ins 1 r p # 实例1配置为主根桥
[SWA-ZXB]stp ins 2 r s # 实例2配置为备根桥

5.2 SWB

[SWB-ZXB]stp g e
[SWB-ZXB]s m m
[SWB-ZXB]stp re
[SWB-ZXB-mst-region]reg 17
[SWB-ZXB-mst-region]rev 1
[SWB-ZXB-mst-region]ins 1 v 2
[SWB-ZXB-mst-region]ins 2 v 3
[SWB-ZXB-mst-region]ac re 
[SWB-ZXB-mst-region]stp ins 2 r p # 实例2配置为主根桥
[SWB-ZXB]stp ins 1 r s # 实例1配置为备根桥

6、配置 VRRP

VRRP有一个默认的优先级100
所以配置监视的时候，优先级直接减至100以下
监视前明确上联口

6.1 SWA

[SWA-ZXB]int v 2
[SWA-ZXB-Vlan-interface2]vrrp vrid 10 vi 192.168.20.1 # 设置虚拟IP
[SWA-ZXB-Vlan-interface2]vr vr 10 pri 170 # 优先级
[SWA-ZXB-Vlan-interface2]vr vr 10 pre # 抢占模式
[SWA-ZXB-Vlan-interface2]q
[SWA-ZXB]track 1 interface g1/0/10 # 设置监视g1/0/10
[SWA-ZXB-track-1]int v 2
[SWA-ZXB-Vlan-interface2]vr vr 10 track 1 p r 80 # 在监视端口发生故障时将优先级减去80，使得，比默认优先级还低，
[SWA-ZXB-Vlan-interface2]int v 3 # 配置下一组
[SWA-ZXB-Vlan-interface3]vr vr 20 vi 192.168.30.1
[SWA-ZXB-Vlan-interface3]vr vr 20 pri 170
[SWA-ZXB-Vlan-interface3]vr vr 20 pre
[SWA-ZXB-Vlan-interface3]vr vr 20 t 1 p r 80

6.2 SWB

另一边将优先级给低一些

[SWB-ZXB]int v 2
[SWB-ZXB-Vlan-interface2]vr vr 10 vi 192.168.20.1
[SWB-ZXB-Vlan-interface2]vr vr 10 pri 150
[SWB-ZXB-Vlan-interface2]vr vr 10 pre
[SWB-ZXB-Vlan-interface2]q
[SWB-ZXB]track 1 int g1/0/10
[SWB-ZXB-track-1]int v 2
[SWB-ZXB-Vlan-interface2]vr vr 10 t 1 p r 80
[SWB-ZXB-Vlan-interface2]int v 3
[SWB-ZXB-Vlan-interface3]vr vr 20 vi 192.168.30.1
[SWB-ZXB-Vlan-interface3]vr vr 20 pri 150
[SWB-ZXB-Vlan-interface3]vr vr 20 pre
[SWB-ZXB-Vlan-interface3]vr vr 20 t 1 p r 80

7、更改PC网关地址

PC IP地址 子网掩码 网关
PC_6 不变 不变 192.168.20.1
PC_7 不变 不变 192.168.30.1
PC_8 不变 不变 192.168.20.1
PC_9 不变 不变 192.168.30.1

7.1 查看 VRRP 状态

dis vr v

7.2 VRRP 中断测试

vr vrid xx shut # xx 为备份组vrid

可关闭任一备份组进行ping测试