Vlan和Trunk实验
实验拓扑
图1-1
注:如无特别说明,描述中的R1或SW1对应拓扑中设备名称末尾数字为1的设备,R2或SW2对应拓扑中设备名称末尾数字为2的设备,以此类推
实验需求
- 按图示为PC配置IP地址
- SW1和SW2上分别创建vlan10和vlan20,要求PC3和PC5属于vlan10,PC4和PV6属于vlan20
- SW1和SW2相连的接口配置为trunk类型,允许vlan10和vlan20通过
- 测试效果,同一vlan的PC可以互通,不同vlan的PC无法互通
实验解法
-
PC配置IP地址命令略
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SW1和SW2上分别创建vlan10和vlan20
步骤1:在SW1上创建vlan10和vlan20
[SW1]vlan 10 [SW1-vlan10]vlan 20 [SW1-vlan20]
步骤2:在SW2上创建vlan10和vlan20
[SW2]vlan 10 [SW2-vlan10]vlan 20 [SW2-vlan20]
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SW1和SW2都把g1/0/1接口加入vlan10,g1/0/2接口加入vlan20
步骤1:在SW1上把g1/0/1接口加入到vlan10,把g1/0/2接口加入到vlan20
[SW1]vlan 10 [SW1-vlan10]port g1/0/1 [SW1-vlan10]vlan 20 [SW1-vlan20]port g1/0/2
步骤2:在SW2上把g1/0/1接口加入到vlan10,把g1/0/2接口加入到vlan20
[SW2]vlan 10 [SW2-vlan10]port g1/0/1 [SW2-vlan10]vlan 20 [SW2-vlan20]port g1/0/2
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SW1和SW2的g1/0/3接口都配置为trunk,允许vlan10和vlan20通过
步骤1:在SW1上把g1/0/3接口配置为Trunk类型,并允许vlan10和vlan20通过
[SW1]interface g1/0/3 [SW1-GigabitEthernet1/0/3]port link-type trunk [SW1-GigabitEthernet1/0/3]port trunk permit vlan 10 20
步骤2:在SW2上把g1/0/3接口配置为Trunk类型,并允许vlan10和vlan20通过
[SW2]interface g1/0/3 [SW2-GigabitEthernet1/0/3]port link-type trunk [SW2-GigabitEthernet1/0/3]port trunk permit vlan 10 20
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测试结果,如下所示,PC3可以PING通PC5,但无法PING通PC4和PC6
步骤1:在PC3上PingPC4,发现不能Ping通
<H3C>ping 192.168.1.2 Ping 192.168.1.2 (192.168.1.2): 56 data bytes, press CTRL_C to break Request time out Request time out Request time out Request time out Request time out
步骤2:在PC3上PingPC5,发现可以Ping通
<H3C>ping 192.168.1.3 Ping 127.0.0.1 (127.0.0.1): 56 data bytes, press CTRL_C to break 56 bytes from 127.0.0.1: icmp_seq=0 ttl=255 time=0.000 ms 56 bytes from 127.0.0.1: icmp_seq=1 ttl=255 time=0.000 ms 56 bytes from 127.0.0.1: icmp_seq=2 ttl=255 time=0.000 ms 56 bytes from 127.0.0.1: icmp_seq=3 ttl=255 time=0.000 ms 56 bytes from 127.0.0.1: icmp_seq=4 ttl=255 time=0.000 ms
步骤3:在PC3上PingPC6,发现不能Ping通
<H3C>ping 192.168.1.4 Ping 192.168.1.4 (192.168.1.4): 56 data bytes, press CTRL_C to break Request time out Request time out Request time out Request time out Request time out