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一 实验拓扑
R0作为dhcp服务器,为所有pc分配ip,其中pc0-3的网关在三层交换机上,pc4和pc5通过单臂路由通信。 三 实验配置划分vlan,建立svi口: sw0: Switch(config)#vlan 10 Switch(config-vlan)#int f0/3 Switch(config-if)#switchport mode access Switch(config-if)#switchport access vlan 10 Switch(config-if#int f0/2 Switch(config-if)#switchport mode trunk Switch(config-if)#switchport trunk allowed vlan all Switch(config-if)#int f0/1 Switch(config-if)#switchport mode trunk Switch(config-if)#switchport trunk allowed vlan allsw1: Switch(config)#vlan 20 Switch(config-vlan)#vlan 30 Switch(config-vlan)#int f0/3 Switch(config-if)#switchport mode access Switch(config-if)#switchport access vlan 20 Switch(config-if)#int f0/4 Switch(config-if)#switchport mode access Switch(config-if)#switchport access vlan 30 Switch(config-if)#int f0/1 Switch(config-if)#switchport mode trunk Switch(config-if)#switchport trunk allowed vlan all Switch(config-if)#int f0/2 Switch(config-if)#switchport mode trunk Switch(config-if)#switchport trunk allowed vlan allsw2: Switch(config)#vlan 40 Switch(config-vlan)#vlan 50 Switch(config)#int f0/1 Switch(config-if)#switchport mode trunk Switch(config-if)#int f0/2 Switch(config-if)#switchport mode access Switch(config-if)#switchport access vlan 40 Switch(config-if)#int f0/3 Switch(config-if)#switchport mode access Switch(config-if)#switchport access vlan 50三层交换机sw0: Switch(config)#vlan 10 Switch(config)#vlan 20 Switch(config)#vlan 30 Switch(config)#int f0/1 Switch(config-if)#switchport trunk encapsulation dot1q Switch(config-if)#switchport mode trunk Switch(config-if)#switchport trunk allowed vlan all Switch(config-if)#int f0/2 Switch(config-if)#switchport trunk encapsulation dot1q Switch(config-if)#switchport mode trunk Switch(config-if)#switchport trunk allowed vlan al Switch(config)#int f0/3 Switch(config-if)#no switchport Switch(config-if)#no shutdown Switch(config-if)#ip address 10.1.1.1 255.255.255.0 Switch(config)#int vlan 10 Switch(config-if)#ip address 192.168.10.254 255.255.255.0 Switch(config-if)#int vlan 20 Switch(config-if)#ip address 192.168.20.254 255.255.255.0 Switch(config-if)#int vlan 30 Switch(config-if)#ip address 192.179.30.254 255.255.255.0 Switch(config-if)#int vlan 40R0: Router(config)#int g0/0 Router(config-if)#no shu Router(config-if)#no shutdown Router(config-if)#ip address 10.1.1.2 255.255.255.0dhcp配置地址池: R0: ip dhcp pool vlan10 network 192.168.10.0 255.255.255.0 default-router 192.168.10.254 dns-server 8.8.8.8 ip dhcp pool vlan20 network 192.168.20.0 255.255.255.0 default-router 192.168.20.254 dns-server 8.8.8.8 ip dhcp pool vlan30 network 192.168.30.0 255.255.255.0 default-router 192.168.30.254 dns-server 8.8.8.8 ip dhcp pool vlan40 network 192.168.40.0 255.255.255.0 default-router 192.168.40.254 dns-server 8.8.8.8 ip dhcp pool vlan50 network 192.168.50.0 255.255.255.0 default-router 192.168.50.254 dns-server 8.8.8.8R0需要有指向pc网段的路由: Router(config)#ip route 192.168.10.0 255.255.255.0 10.1.1.1 Router(config)#ip route 192.168.20.0 255.255.255.0 10.1.1.1 Router(config)#ip route 192.168.30.0 255.255.255.0 10.1.1.1三层交换机sw0配置: Switch(config)#int vlan 10 Switch(config-if)#ip helper-address 10.1.1.2 Switch(config)#int vlan 20 Switch(config-if)#ip helper-address 10.1.1.2 Switch(config)#int vlan 30 Switch(config-if)#ip helper-address 10.1.1.2 配置默认: Switch(config)#ip route 0.0.0.0 0.0.0.0 10.1.1.2配置单臂路由: interface GigabitEthernet0/1.1 encapsulation dot1Q 40 ip address 192.168.40.254 255.255.255.0 ip helper-address 192.168.40.254 interface GigabitEthernet0/1.2 encapsulation dot1Q 50 ip helper-address 192.168.40.254 ip address 192.168.50.254 255.255.255.0配置效果如下: pc0: pc1: pc2有bug出不来 pc3: pc4:
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