不同的VLAN之间相互通信必须要有三层设备(路由器,多层交换机)做中转
VLAN间路由
通过三层设备路由,使得不同VLAN间可以相互通信。但仅仅允许单薄通信。不同VLAN之间广播帧依然被隔离即没有失去VLAN原来的意义
PC1(设置IP地址)
IP地址:192.168.10.1
子网掩码:255.255.255.0
网关:192.168.10.254
PC2(设置IP地址)
IP地址:192.168.10.2
子网掩码:255.255.255.0
网关:192.168.10.254
PC3(设置IP地址)
IP地址:192.168.20.1
子网掩码:255.255.255.0
网关:192.168.20.254
PC4(设置IP地址)
IP地址:192.168.20.2
子网掩码:255.255.255.0
网关:192.168.20.254
SW1(设置Trunk链路)
<Huawei>system-view //进入系统视图
[Huawei]undo info-center enable //关闭信息告警提示
[Huawei]sysname SW1 //改名
[SW1]vlan batch 10 20 //创建vlan10和vlan20
[SW1]interface g0/0/1 //进入接口
[SW1-GigabitEthernet0/0/1]port link-type trunk //设置为trunk链路
[SW1-GigabitEthernet0/0/1]port trunk allow-pass vlan all //允许所有VLAN通过
[SW1-GigabitEthernet0/0/1]quit //退出
[SW1]interface g0/0/2 //进入接口
[SW1-GigabitEthernet0/0/2]port link-type trunk //设置为trunk链路
[SW1-GigabitEthernet0/0/2]port trunk allow-pass vlan all //允许所有VLAN通过
[SW1-GigabitEthernet0/0/2]quit //退出
[SW1]
SW2(设置Trunk链路和access链路)
<Huawei>system-view //进入系统视图
[Huawei]undo info-center enable //关闭信息告警提示
[Huawei]sysname SW2 //改名
[SW2]vlan batch 10 20 //创建vlan10和vlan20
[SW2]interface g0/0/1 //进入接口
[SW2-GigabitEthernet0/0/1]port link-type access //设置为access链路
[SW2-GigabitEthernet0/0/1]port default vlan 10 //允许vlan10通过
[SW2-GigabitEthernet0/0/1]quit //退出
[SW2]interface g0/0/2 //进入接口
[SW2-GigabitEthernet0/0/2]port link-type access //设置为access链路
[SW2-GigabitEthernet0/0/2]port default vlan 20 //允许vlan20通过
[SW2-GigabitEthernet0/0/2]quit //退出
[SW2]interface g0/0/3 //进入接口
[SW2-GigabitEthernet0/0/3]port link-type trunk //设置为trunk链路
[SW2-GigabitEthernet0/0/3]port trunk allow-pass vlan all //允许所有VLAN通过
[SW2-GigabitEthernet0/0/3]quit //退出
[SW2]
SW3(设置Trunk链路和access链路)
<Huawei>system-view //进入系统视图
[Huawei]undo info-center enable //关闭信息告警提示
[Huawei]sysname SW3 //改名
[SW3]vlan batch 10 20 //创建vlan10和vlan20
[SW3]interface g0/0/1 //进入接口
[SW3-GigabitEthernet0/0/1]port link-type access //设置为access链路
[SW3-GigabitEthernet0/0/1]port default vlan 10 //允许vlan10通过
[SW3-GigabitEthernet0/0/1]quit //退出
[SW3]interface g0/0/2 //进入接口
[SW3-GigabitEthernet0/0/2]port link-type access //设置为access链路
[SW3-GigabitEthernet0/0/2]port default vlan 20 //允许vlan20通过
[SW3-GigabitEthernet0/0/2]quit //退出
[SW3]interface g0/0/3 //进入接口
[SW3-GigabitEthernet0/0/3]port link-type trunk //设置为trunk链路
[SW3-GigabitEthernet0/0/3]port trunk allow-pass vlan all //允许所有VLAN通过
[SW3-GigabitEthernet0/0/3]quit //退出
[SW3]
SW1(查看VLAN接口)
[SW1]dis port vlan //查看vlan接口
Port Link Type PVID Trunk VLAN List
-------------------------------------------------------------------------------
GigabitEthernet0/0/1 trunk 1 1-4094 //允许所有vlan通过
GigabitEthernet0/0/2 trunk 1 1-4094 //允许所有vlan通过
GigabitEthernet0/0/3 hybrid 1 -
GigabitEthernet0/0/4 hybrid 1 -
GigabitEthernet0/0/5 hybrid 1 -
GigabitEthernet0/0/6 hybrid 1 -
GigabitEthernet0/0/7 hybrid 1 -
GigabitEthernet0/0/8 hybrid 1 -
GigabitEthernet0/0/9 hybrid 1 -
GigabitEthernet0/0/10 hybrid 1 -
GigabitEthernet0/0/11 hybrid 1 -
GigabitEthernet0/0/12 hybrid 1 -
GigabitEthernet0/0/13 hybrid 1 -
GigabitEthernet0/0/14 hybrid 1 -
GigabitEthernet0/0/15 hybrid 1 -
GigabitEthernet0/0/16 hybrid 1 -
GigabitEthernet0/0/17 hybrid 1 -
GigabitEthernet0/0/18 hybrid 1 -
GigabitEthernet0/0/19 hybrid 1 -
GigabitEthernet0/0/20 hybrid 1 -
GigabitEthernet0/0/21 hybrid 1 -
GigabitEthernet0/0/22 hybrid 1 -
GigabitEthernet0/0/23 hybrid 1 -
GigabitEthernet0/0/24 hybrid 1 -
[SW1]
SW2(查看VLAN接口)
[SW2]dis port vlan //查看vlan接口
Port Link Type PVID Trunk VLAN List
-------------------------------------------------------------------------------
GigabitEthernet0/0/1 access 10 - //允许vlan10通过
GigabitEthernet0/0/2 access 20 - //允许vlan20通过
GigabitEthernet0/0/3 trunk 1 1-4094 //允许所有vlan通过
GigabitEthernet0/0/4 hybrid 1 -
GigabitEthernet0/0/5 hybrid 1 -
GigabitEthernet0/0/6 hybrid 1 -
GigabitEthernet0/0/7 hybrid 1 -
GigabitEthernet0/0/8 hybrid 1 -
GigabitEthernet0/0/9 hybrid 1 -
GigabitEthernet0/0/10 hybrid 1 -
GigabitEthernet0/0/11 hybrid 1 -
GigabitEthernet0/0/12 hybrid 1 -
GigabitEthernet0/0/13 hybrid 1 -
GigabitEthernet0/0/14 hybrid 1 -
GigabitEthernet0/0/15 hybrid 1 -
GigabitEthernet0/0/16 hybrid 1 -
GigabitEthernet0/0/17 hybrid 1 -
GigabitEthernet0/0/18 hybrid 1 -
GigabitEthernet0/0/19 hybrid 1 -
GigabitEthernet0/0/20 hybrid 1 -
GigabitEthernet0/0/21 hybrid 1 -
GigabitEthernet0/0/22 hybrid 1 -
GigabitEthernet0/0/23 hybrid 1 -
GigabitEthernet0/0/24 hybrid 1 -
[SW2]
SW3(查看VLAN接口)
[SW3]dis port vlan //查看vlan接口
Port Link Type PVID Trunk VLAN List
-------------------------------------------------------------------------------
GigabitEthernet0/0/1 access 10 - // 允许vlan10通过
GigabitEthernet0/0/2 access 20 - //允许vlan20通过
GigabitEthernet0/0/3 trunk 1 1-4094 //允许所有vlan通过
GigabitEthernet0/0/4 hybrid 1 -
GigabitEthernet0/0/5 hybrid 1 -
GigabitEthernet0/0/6 hybrid 1 -
GigabitEthernet0/0/7 hybrid 1 -
GigabitEthernet0/0/8 hybrid 1 -
GigabitEthernet0/0/9 hybrid 1 -
GigabitEthernet0/0/10 hybrid 1 -
GigabitEthernet0/0/11 hybrid 1 -
GigabitEthernet0/0/12 hybrid 1 -
GigabitEthernet0/0/13 hybrid 1 -
GigabitEthernet0/0/14 hybrid 1 -
GigabitEthernet0/0/15 hybrid 1 -
GigabitEthernet0/0/16 hybrid 1 -
GigabitEthernet0/0/17 hybrid 1 -
GigabitEthernet0/0/18 hybrid 1 -
GigabitEthernet0/0/19 hybrid 1 -
GigabitEthernet0/0/20 hybrid 1 -
GigabitEthernet0/0/21 hybrid 1 -
GigabitEthernet0/0/22 hybrid 1 -
GigabitEthernet0/0/23 hybrid 1 -
GigabitEthernet0/0/24 hybrid 1 -
[SW3]
SW1(配置SVI)
[SW1]interface Vlanif 10 //进入vlanif10
[SW1-Vlanif10]ip address 192.168.10.254 24 //设置IP地址
[SW1-Vlanif10]quit //退出
[SW1]interface Vlanif 20 //进入vlanif20
[SW1-Vlanif20]ip address 192.168.20.254 24 //设置IP地址
[SW1-Vlanif20]quit //退出
[SW1]
PC1(测试是否可以全网互通)
PC>ping 192.168.20.1 //测试是否可以ping通PC2
Ping 192.168.20.1: 32 data bytes, Press Ctrl_C to break
From 192.168.20.1: bytes=32 seq=1 ttl=127 time=125 ms //ping通
From 192.168.20.1: bytes=32 seq=2 ttl=127 time=62 ms
From 192.168.20.1: bytes=32 seq=3 ttl=127 time=78 ms
From 192.168.20.1: bytes=32 seq=4 ttl=127 time=78 ms
From 192.168.20.1: bytes=32 seq=5 ttl=127 time=109 ms
--- 192.168.20.1 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 62/90/125 ms
PC>ping 192.168.10.2 //测试是否可以ping通PC3
Ping 192.168.10.2: 32 data bytes, Press Ctrl_C to break
From 192.168.10.2: bytes=32 seq=1 ttl=128 time=94 ms //ping通
From 192.168.10.2: bytes=32 seq=2 ttl=128 time=62 ms
From 192.168.10.2: bytes=32 seq=3 ttl=128 time=109 ms
From 192.168.10.2: bytes=32 seq=4 ttl=128 time=78 ms
From 192.168.10.2: bytes=32 seq=5 ttl=128 time=94 ms
--- 192.168.10.2 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 62/87/109 ms
PC>ping 192.168.20.2 //测试是否可以ping通PC4
Ping 192.168.20.2: 32 data bytes, Press Ctrl_C to break
From 192.168.20.2: bytes=32 seq=1 ttl=127 time=124 ms //ping通
From 192.168.20.2: bytes=32 seq=2 ttl=127 time=93 ms
From 192.168.20.2: bytes=32 seq=3 ttl=127 time=78 ms
From 192.168.20.2: bytes=32 seq=4 ttl=127 time=125 ms
From 192.168.20.2: bytes=32 seq=5 ttl=127 time=78 ms
--- 192.168.20.2 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 78/99/125 ms
PC>