三层交换机的真机实验

复盘一下之前做过的真机实验

硬件准备：

4台交换机，3根网线，1根console线，1台PC

按照拓扑图接线即可，连线注意一定要有条理，否则很容易配置IP的时候产生混乱

正式配置：

使用SecureCRT连接设备（真机配置命令会和虚拟机不同）

1.配二层交换机

LSW1:

[SW1]vlan 20 [SW1]vlan 30 [SW1]int g0/0/2 [SW1-GigabitEthernet0/0/2]p l a [SW1-GigabitEthernet0/0/2]port default vlan 20 [SW1-GigabitEthernet0/0/2]q [SW1] [SW1]int g0/0/3 [SW1-GigabitEthernet0/0/3]p l a [SW1-GigabitEthernet0/0/3]port default vlan 30 [SW1-GigabitEthernet0/0/3]q [SW1] [SW1]int g0/0/1 [SW1-GigabitEthernet0/0/1]p l t [SW1-GigabitEthernet0/0/1]port trunk allow-pass vlan all [SW1-GigabitEthernet0/0/1]q

LSW2:

[SW2]vlan 2 [SW2]vlan 3 [SW2]int g0/0/2 [SW2-GigabitEthernet0/0/2]p l a [SW2-GigabitEthernet0/0/2]port default vlan 2 [SW2-GigabitEthernet0/0/2]q [SW2] [SW2]int g0/0/3 [SW2-GigabitEthernet0/0/3]p l a [SW2-GigabitEthernet0/0/3]port default vlan 3 [SW2-GigabitEthernet0/0/3]q [SW2] [SW2]int g0/0/1 [SW2-GigabitEthernet0/0/1]p l t [SW2-GigabitEthernet0/0/1]port trunk allow-pass vlan all [SW2-GigabitEthernet0/0/1]q

2.配三层交换机

SW3:

[SW3]vlan 20 [SW3-vlan20]q [SW3]vlan 30 [SW3-vlan30]q [SW3] [SW3]int g0/0/2 [SW3-GigabitEthernet0/0/2]p l t [SW3-GigabitEthernet0/0/2]p t a v all [SW3-GigabitEthernet0/0/2]q [SW3] [SW3]int vlanif 20 [SW3-Vlanif20]ip add 192.168.1.1 27 [SW3-Vlanif20]q [SW3]int vlanif 30 [SW3-Vlanif30]ip add 192.168.1.33 27 [SW3-Vlanif30]q [SW3] [SW3]int g0/0/1 [SW3-GigabitEthernet0/0/1]ip add 192.168.1.129 27 [SW3-GigabitEthernet0/0/1]p l t [SW3-GigabitEthernet0/0/1]p t a v all [SW3]

SW4:

[SW4]vlan 2 [SW4-vlan2]q [SW4]vlan 3 [SW4-vlan3]q [SW4] [SW4]int g0/0/2 [SW4-GigabitEthernet0/0/2]p l t [SW4-GigabitEthernet0/0/2]p t a v all [SW4-GigabitEthernet0/0/2]q [SW4] [SW4]int vlanif 2 [SW4-Vlanif2]ip add 192.168.1.65 27 [SW4-Vlanif2]q [SW4]int vlanif 3 [SW4-Vlanif3]ip add 192.168.1.97 27 [SW4-Vlanif3]q [SW4] [SW4]int g0/0/1 [SW4-GigabitEthernet0/0/1]ip add 192.168.1.130 27 [SW4-GigabitEthernet0/0/1]p l t [SW4-GigabitEthernet0/0/1]p t a v all [SW4]

3.配置DHCP地址池

SW3

[SW3]dhcp enable [SW3]ip pool jio [SW3-ip-pool-jio]network 192.168.1.0 mask 27 [SW3-ip-pool-jio]gateway-list 192.168.1.1 [SW3-ip-pool-jio]q [SW3]ip pool hh [SW3-ip-pool-hh]network 192.168.1.32 mask 27 [SW3-ip-pool-hh]gateway-list 192.168.1.33 [SW3-ip-pool-hh]q [SW3]int vlanif 20 [SW3-Vlanif20]dhcp select global [SW3-Vlanif20]q [SW3]int vlanif 30 [SW3-Vlanif30]dhcp select global [SW3-Vlanif30]q

SW4:

[SW4]dhcp enable [SW4]ip pool jio1 [SW4-ip-pool-jio1]network 192.168.1.64 mask 27 [SW4-ip-pool-jio1]gateway-list 192.168.1.65 [SW4-ip-pool-jio1]q [SW4]ip pool hh1 [SW4-ip-pool-hh1]network 192.168.1.96 mask 27 [SW4-ip-pool-hh1]gateway-list 192.168.1.97 [SW4-ip-pool-hh1]q [SW4]int vlanif 2 [SW4-Vlanif2]dhcp select global [SW4-Vlanif2]q [SW4]int vlanif 3 [SW4-Vlanif3]dhcp select global [SW4-Vlanif3]q

4.配置ospf，跨网段互通

SW3:

[SW3]ospf 1 router-id 1.1.1.1 [SW3-ospf-1]area 0 [SW3-ospf-1-area-0.0.0.0]network 192.168.1.128 0.0.0.31 [SW3-ospf-1-area-0.0.0.0]q [SW3-ospf-1]area 1 [SW3-ospf-1-area-0.0.0.1]network 192.168.1.0 0.0.0.31 [SW3-ospf-1-area-0.0.0.1]network 192.168.1.32 0.0.0.31（这两条可配置一个路由聚合减少路由条目） [SW3-ospf-1-area-0.0.0.1]q [SW3-ospf-1]q

SW4:

[SW4]ospf 1 router-id 2.2.2.2 [SW4-ospf-1]area 0 [SW4-ospf-1-area-0.0.0.0]network 192.168.1.128 0.0.0.31 [SW4-ospf-1-area-0.0.0.0]q [SW4-ospf-1]area 1 [SW4-ospf-1-area-0.0.0.1]network 192.168.1.64 0.0.0.31 [SW4-ospf-1-area-0.0.0.1]network 192.168.1.96 0.0.0.31（这两条可配置一个路由聚合减少路由条目） [SW4-ospf-1-area-0.0.0.1]q [SW4-ospf-1]q

可display ip routing-table查看ospf路由条目已经有了

最终ping测试，可以全网互通