120 lines
3.2 KiB
Markdown
120 lines
3.2 KiB
Markdown
# VLAN间通信
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### 一、VLANIF虚接口
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1. 三层交换机是具有网络层路由功能的交换机
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2. VLANIF接口是一种三层虚拟接口，可以实现VLAN间的三层互通
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3. VLANIF配置接口IP地址，作为VLAN内主机的网关
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### 二、VLANIF虚接口实验
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- **需求**
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> 让所有vlan内的所有pc主机都可以互通
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- **配置步骤**
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- 配置PC的IP地址和掩码、网关
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- 交换机SW2/SW3 上创建VLAN，配置接口接口加入VLAN
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- 在SW1上创建VLAN，并且给VLANIF 虚拟接口配置IP地址
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- **配置命令**
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- SW1配置
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```
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[SW1]vlan batch 10 20 30 40
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[SW1]port-group group-member g0/0/1 g0/0/2
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[SW1-port-group]port link-type trunk
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[SW1-port-group]port trunk allow-pass vlan all
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[SW1-port-group]quit
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[SW1]interface vlanif 10
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[SW1-vlanif10] ip address 192.168.10.254 24
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[SW1-vlanif10]interface vlanif 20
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[SW1-vlanif20]ip address 192.168.20.254 24
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[SW1-vlanif20]interface vlanif 30
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[SW1-vlanif30]ip address 192.168.30.254 24
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[SW1-vlanif30]interface vlanif 40
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[SW1-vlanif40]ip address 192.168.40.254 24
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```
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- SW2配置
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```
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[SW2]vlan batch 10 20 30 40
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[SW2]interface g0/0/1
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[SW2-g0/0/1]port link-type trunk
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[SW2-g0/0/1]port trunk allow-pass vlan all
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[SW2-g0/0/1]interface g0/0/2
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[SW2-g0/0/2]port link-type access
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[SW2-g0/0/2]port default vlan 10
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[SW2-g0/0/2]interface g0/0/3
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[SW2-g0/0/3]port link-type access
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[SW2-g0/0/3]port default vlan 20
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```
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- SW3配置
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```
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[SW3]vlan batch 10 20 30 40
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[SW3]interface g0/0/1
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[SW3-g0/0/1]port link-type trunk
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[SW3-g0/0/1]port trunk allow-pass vlan all
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[SW3-g0/0/1]interface g0/0/2
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[SW3-g0/0/2]port link-type access
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[SW3-g0/0/2]port default vlan 30
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[SW3-g0/0/2]interface g0/0/3
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[SW3-g0/0/3]port link-type access
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[SW3-g0/0/3]port default vlan 40
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```
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- 测试与验证
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```
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Vlan10主机192.168.10.1 ping 192.168.20.1
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192.168.30.1
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192.168.40.1
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```
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### 三、三层交换连接路由实现全网互通
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- 配置步骤1：通过三层交换实现vlan10，vlan20，vlan30，vlan40之间的通信（具体命令参考1前一个实验）
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- 配置步骤2：配置三层交换连接路由器并实现全网互通用
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- 三层交换机配置
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```
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[S3]vlan 50
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[S3]interfaceVlanif 50
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[S3-Vlanif50]IPaddress 192.168.50.1 24
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[S3]interfaceGigabitEthernet 0/0/1
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[S3-GigabitEthernet0/0/1]portlink-type access
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[S3-GigabitEthernet0/0/1]portdefault vlan 50
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[S3]IP route-static 192.168.60.0 24 192.168.50.2
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```
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路由配置
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```
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[R1]interfaceGigabitEthernet 0/0/0
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[R1-GigabitEthernet0/0/0]IPaddress 192.168.60.254 24
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[R1]interfaceGigabitEthernet 0/0/1
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[R1-GigabitEthernet0/0/1]IPaddress 192.168.50.2 24
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[R1]ip route-static 0.0.0.0 0 192.168.50.1
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```
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- 验证
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```
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192.168.60.1的主机 ping 192.168.10.1
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192.168.20.1
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192.168.30.1
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192.168.40.1
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```
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