The use of three-tier exchange technology to achieve communication between vlan
Third floor of the exchange exchange = + 3 forwarding
Layer 3 forwarding process to reseal layer 2
On Layer 3 switches, a third layer of the first packet of data flow processing engine
Once routing, switching times
Experimental topology
Experimental Procedure:
1, configuration switch sw2
<Huawei>sys [Huawei]sysname SW2 [SW2]vlan batch 10 20 ##创建vlan10 20 [SW2]int e0/0/2[SW2-Ethernet0/0/2]port link-type access ##设置access [SW2-Ethernet0/0/2]port default vlan 10 ##将接口放到vlan中 [SW2-Ethernet0/0/2]un sh [SW2-Ethernet0/0/2]int e0/0/3 [SW2-Ethernet0/0/3]port link-type access [SW2-Ethernet0/0/3]port default vlan 20 [SW2-Ethernet0/0/3]un sh [SW2-Ethernet0/0/3]int e0/0/1 [SW2-Ethernet0/0/1]port link-type trunk ##设置trunk [SW2-Ethernet0/0/1]port trunk allow-pass vlan all ##允许所有的vlan通过 [SW2-Ethernet0/0/1]un sh [SW2-Ethernet0/0/1]int g0/0/1 [SW2-GigabitEthernet0/0/1]port link-type trunk [SW2-GigabitEthernet0/0/1]port trunk allow-pass vlan all [SW2-GigabitEthernet0/0/1]un sh
2、配置sw3交换机（与sw2的配置一样）
<Huawei>sys [Huawei]sysname SW3 [SW3]vlan batch 10 20 [SW3]int e0/0/2 [SW3-Ethernet0/0/2]port link-type access [SW3-Ethernet0/0/2]port default vlan 10 [SW3-Ethernet0/0/2]un sh [SW3-Ethernet0/0/2]int e0/0/3 [SW3-Ethernet0/0/3]port link-type access [SW3-Ethernet0/0/3]port default vlan 20 [SW3-Ethernet0/0/3]un sh [SW3-Ethernet0/0/3]int e0/0/1 [SW3-Ethernet0/0/1]port link-type trunk [SW3-Ethernet0/0/1]port trunk allow-pass vlan all [SW3-Ethernet0/0/1]un sh
3、配置sw1三层交换机
<Huawei>sys [Huawei]sysname SW1 [SW1]vlan batch 10 20 1000 [SW1]int g0/0/1 [SW1-GigabitEthernet0/0/1]port link-type trunk [SW1-GigabitEthernet0/0/1]port trunk allow-pass vlan all [SW1-GigabitEthernet0/0/1]un sh [SW1-GigabitEthernet0/0/1]int g0/0/2 [SW1-GigabitEthernet0/0/2]port link-type access ##三层交换连接路由的不能配置trunk [SW1-GigabitEthernet0/0/2]port default vlan 1000 [SW1-GigabitEthernet0/0/2]un sh [SW1-GigabitEthernet0/0/2]q [SW1]int vlanif 10 ##进入逻辑接口[SW1-Vlanif10]ip add 192.168.10.1 24 ##设置网关 [SW1-Vlanif10]int vlanif 20[SW1-Vlanif20]ip add 192.168.20.1 24 [SW1]int vlanif 1000 [SW1-Vlanif1000]ip add 11.0.0.1 30 [SWl-Vlanif1000] Q [SW1] ip route-static 0.0.0.0 0.0.0.0 11.0.0.2 ## to set the default route, the default upward, downward static
4, arranged route R1
<The Huawei> SYS [the Huawei] Sysname Rl [Rl] int G0 / 0/0 interface ## is provided ip address [Rl-the GigabitEthernet0 / 0/0] ip 11.0.0.2 the Add 30 [Rl-the GigabitEthernet0 / 0/0] UN SH [Rl-the GigabitEthernet0 / 0/0] 0 ## int into the loopback interface Loopback provided IP [Rl-LoopBack0] 1.1.1.1 IP the Add 30 [Rl-LoopBack0] Q [Rl] static IP 192.168.10.0 route-24 11.0 ## .0.1 static routing [R1] ip route-static 192.168.20.0 24 11.0.0.1
5, the whole network interoperability test
Completion of the experiment.
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