小型园区网实验

 第一步:对于接入层设备LSW3,LSW4,汇聚层LSW1,LSW2, 创建vlan2,3,20,30,并进行相应的配置。以LSW3为例,最终的效果如下:

 

 需要注意的是,要先对LSW1,LSW2进行链路聚合再进行相关的VLAN配置。以LSW1的g0/0/1和g0/0/2为例,结果如下:

第二步:配置主根,使用MSTP。

1.模式改为mstp,创建实例1(vlan2和vlan3)和实例2(vlan20和vlan30),LSW1,2,3,4配置命令都是:
stp enable
stp mode mstp
stp region-configuration
region-name aa
revision-level 100
instance 1 vlan 2 to 3
instance 2 vlan 20 30
active region-configuration

2.配置LSW1,LSW2中实例1和实例2 的优先级:
在LSW1中:
stp instance 1 root primary
stp instance 2 root secondary

在LSW2中:
stp instance 1 root secondary
stp instance 2 root primary

第三步:配置网关,使用VRRP

1.VLAN2以LSW1为主网关,以LSW2为备用网关

        在LSW1中:

         interface Vlanif2
         ip address 10.0.2.1 255.255.255.0
         vrrp vrid 1 virtual-ip 10.0.2.254
         vrrp vrid 1 priority 120
         vrrp vrid 1 track interface GigabitEthernet0/0/5 reduced 30

        在LSW2中:

          interface Vlanif2
          ip address 10.0.2.1 255.255.255.0
          vrrp vrid 1 virtual-ip 10.0.2.254

1.VLAN2以LSW1为主网关,以LSW2为备用网关

        在LSW1中:

         interface Vlanif2
         ip address 10.0.2.1 255.255.255.0
         vrrp vrid 1 virtual-ip 10.0.2.254
         vrrp vrid 1 priority 120
         vrrp vrid 1 track interface GigabitEthernet0/0/5 reduced 30

        在LSW2中:

          interface Vlanif2
          ip address 10.0.2.2 255.255.255.0
          vrrp vrid 1 virtual-ip 10.0.2.254

 2.VLAN3以LSW1为主网关,以LSW2为备用网关

        在LSW1中:

         interface Vlanif3
         ip address 10.0.3.1 255.255.255.0
         vrrp vrid 1 virtual-ip 10.0.3.254
         vrrp vrid 1 priority 120
         vrrp vrid 1 track interface GigabitEthernet0/0/5 reduced 30

        在LSW2中:

          interface Vlanif3
          ip address 10.0.3.2 255.255.255.0
          vrrp vrid 1 virtual-ip 10.0.3.254

 3.VLAN20以LSW2为主网关,以LSW1为备用网关

        在LSW2中:

         interface Vlanif20
         ip address 10.0.20.2 255.255.255.0
         vrrp vrid 1 virtual-ip 10.0.20.254
         vrrp vrid 1 priority 120
         vrrp vrid 1 track interface GigabitEthernet0/0/5 reduced 30

        在LSW1中:

          interface Vlanif20
          ip address 10.0.20.1 255.255.255.0
          vrrp vrid 1 virtual-ip 10.0.2.254

 4.VLAN30以LSW2为主网关,以LSW1为备用网关

        在LSW2中:

         interface Vlanif30
         ip address 10.0.30.2 255.255.255.0
         vrrp vrid 1 virtual-ip 10.0.20.254
         vrrp vrid 1 priority 120
         vrrp vrid 1 track interface GigabitEthernet0/0/5 reduced 30

        在LSW1中:

          interface Vlanif30
          ip address 10.0.20.1 255.255.255.0
          vrrp vrid 1 virtual-ip 10.0.2.254

第四步:对核心层进行配置,OSPF

        对于LSW1:

         vlan 11
         interface GigabitEthernet0/0/5
         port link-type access
         port default vlan 11

         interface Vlanif11
         ip address 10.0.11.1 255.255.255.252
        

          ospf 1
          area 0.0.0.0
          network 10.0.2.1 0.0.0.0
          network 10.0.3.1 0.0.0.0
          network 10.0.20.1 0.0.0.0
          network 10.0.30.1 0.0.0.0
          network 10.0.11.1 0.0.0.0

  对于LSW2:

         vlan 12
         interface GigabitEthernet0/0/5
         port link-type access
         port default vlan 12

        interface Vlanif12
        ip address 10.0.12.1 255.255.255.252

  对于AR1 

         interface GigabitEthernet0/0/1
         ip address 10.0.11.2 255.255.255.252

         interface GigabitEthernet0/0/12
         ip address 10.0.12.2 255.255.255.252

         interface GigabitEthernet0/0/2
         ip address 202.1.1.1 255.255.255.252 

         ospf 1 
         area 0.0.0.0 
         network 10.0.11.2 0.0.0.0 
         network 10.0.12.2 0.0.0.0 

         ip route-static 0.0.0.0 0.0.0.0 202.1.1.2

第五步骤:在AR1和AR2配置NAPT

   对于AR2:

          interface GigabitEthernet0/0/0
          ip address 202.1.1.2 255.255.255.252 
          interface LoopBack0
          ip address 100.100.100.100 255.255.255.0 

   对于AR2:

        interface GigabitEthernet0/0/2
        acl number 2000  
        rule 5 permit source 10.0.0.0 0.0.255.255 
        nat outbound 2000

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