# 项目实战 - 基础交换网络设计

![image-20240903111352230](https://picgo-noriu.oss-cn-beijing.aliyuncs.com/Images/image-20240903111352230.png)

- **需求**
  - 公司有三个部门，财务部，市场部，技术部，为了内网安全，给每个部门单独划分一个VLAN
  - 财务部：vlan10、市场部：vlan20、技术部：vlan30
  - 公司所有部门，所有VLAN内的主机都通过DHCP服务器分发IP地址
  - 每个部门，每个VLAN的网关地址都为，192.168.xx.254
  - SW5中每个vlanif 虚接口地址都为 192.168.xx.254
  - SW5通过vlanif50与DHCP进行通信，DHCP服务器管理IP：192.168.50.1
  - 所有的PC都通过SW5与DHCP服务器进行通信，获取IP地址，所以SW5是DHCP中继

### 一、IP、VLAN、Routing

- **PC**

- **SW1**

  ```
  [SW1]vlan batch 10 20 30
  [SW1]port-group group-member g0/0/1 g0/0/3 g0/0/4
  [SW1-port-group]port link-type access
  [SW1-port-group]port default vlan 10
  [SW1-port-group]quit
  [SW1]int g0/0/2
  [SW1-GigabitEthernet0/0/2]port link-type trunk
  [SW1-GigabitEthernet0/0/2]port trunk allow-pass vlan all
  ```

- **SW2**

  ```
  [SW2]vlan batch 10 20 30
  [SW2]int g0/0/1
  [SW2-GigabitEthernet0/0/1]port link-type access
  [SW2-GigabitEthernet0/0/1]port default vlan 20
  [SW2-GigabitEthernet0/0/1]int g0/0/2
  [SW2-GigabitEthernet0/0/2]port link-type trunk
  [SW2-GigabitEthernet0/0/2]port trunk allow-pass vlan all
  ```

- **SW3**

  ```
  [SW3]vlan batch 10 20 30
  [SW3]int g0/0/1
  [SW3-GigabitEthernet0/0/1]port link-type access
  [SW3-GigabitEthernet0/0/1]port default vlan 30
  [SW3-GigabitEthernet0/0/1]int g0/0/2
  [SW3-GigabitEthernet0/0/2]port link-type trunk
  [SW3-GigabitEthernet0/0/2]port trunk allow-pass vlan all
  ```

- **HX - SW5**

  ```
  [HX-SW5]vlan batch 10 20 30 50
  [HX-SW5]port-group group-member g0/0/1 to g0/0/3
  [HX-SW5-port-group]port link-type trunk
  [HX-SW5-port-group]port trunk allow-pass vlan all
  [HX-SW5-port-group]quit
  [HX-SW5]int g0/0/5
  [HX-SW5-GigabitEthernet0/0/5]port link-type access
  [HX-SW5-GigabitEthernet0/0/5]port default vlan 50
  [HX-SW5-GigabitEthernet0/0/5]quit
  [HX-SW5]int vlan 50
  [HX-SW5-Vlanif50]ip add 192.168.50.251 24
  ```

- **AR3 - DHCP**

  ```
  [AR3-DHCP]int g0/0/1
  [AR3-DHCP-GigabitEthernet0/0/1]ip add 192.168.50.1 24
  [AR3-DHCP-GigabitEthernet0/0/1]quit
  [AR3-DHCP]ip route-static 0.0.0.0 0 192.168.50.251
  ```

### 二、DHCP

#### 1、配置

- **AR3 - DHCP**

  ```
  [AR3-DHCP]dhcp enable 
  [AR3-DHCP]ip pool vlan10
  [AR3-DHCP-ip-pool-vlan10]network 192.168.10.0 mask 24
  [AR3-DHCP-ip-pool-vlan10]gateway-list 192.168.10.254
  [AR3-DHCP-ip-pool-vlan10]dns-list 8.8.8.8
  [AR3-DHCP-ip-pool-vlan10]quit
  [AR3-DHCP]ip pool vlan20
  [AR3-DHCP-ip-pool-vlan20]network 192.168.20.0 mask 24
  [AR3-DHCP-ip-pool-vlan20]gateway-list 192.168.20.254
  [AR3-DHCP-ip-pool-vlan20]dns-list 8.8.8.8
  [AR3-DHCP-ip-pool-vlan20]quit
  [AR3-DHCP]ip pool vlan30
  [AR3-DHCP-ip-pool-vlan30]network 192.168.30.0 mask 24
  [AR3-DHCP-ip-pool-vlan30]gateway-list 192.168.30.254
  [AR3-DHCP-ip-pool-vlan30]dns-list 8.8.8.8
  [AR3-DHCP-ip-pool-vlan30]quit
  [AR3-DHCP]int g0/0/1
  [AR3-DHCP-GigabitEthernet0/0/1]dhcp select global
  ```

- **HX - SW5**

  ```
  [HX-SW5]dhcp enable 
  [HX-SW5]int Vlanif 10
  [HX-SW5-Vlanif10]ip add 192.168.10.254 24
  [HX-SW5-Vlanif10]dhcp select relay
  [HX-SW5-Vlanif10]dhcp relay server-ip 192.168.50.1
  [HX-SW5-Vlanif10]int Vlanif 20
  [HX-SW5-Vlanif20]ip add 192.168.20.254 24
  [HX-SW5-Vlanif20]dhcp select relay
  [HX-SW5-Vlanif20]dhcp relay server-ip 192.168.50.1
  [HX-SW5-Vlanif20]int Vlanif 30
  [HX-SW5-Vlanif30]ip add 192.168.30.254 24
  [HX-SW5-Vlanif30]dhcp select relay
  [HX-SW5-Vlanif30]dhcp relay server-ip 192.168.50.1
  ```
  

#### 2、测试

- **PC1	*[VALN10]***

  ```
  PC1>ipconfig
  
  Link local IPv6 address...........: fe80::5689:98ff:fed3:1698
  IPv6 address......................: :: / 128
  IPv6 gateway......................: ::
  IPv4 address......................: 192.168.10.253
  Subnet mask.......................: 255.255.255.0
  Gateway...........................: 192.168.10.254
  Physical address..................: 54-89-98-D3-16-98
  DNS server........................: 8.8.8.8
  ```

- **PC2	*[VALN20]***

  ```
  PC2>ipconfig
  
  Link local IPv6 address...........: fe80::5689:98ff:fe31:2c88
  IPv6 address......................: :: / 128
  IPv6 gateway......................: ::
  IPv4 address......................: 192.168.20.253
  Subnet mask.......................: 255.255.255.0
  Gateway...........................: 192.168.20.254
  Physical address..................: 54-89-98-31-2C-88
  DNS server........................: 8.8.8.8
  ```

- **PC3	*[VALN30]***

  ```
  PC3>ipconfig
  
  Link local IPv6 address...........: fe80::5689:98ff:fef9:3881
  IPv6 address......................: :: / 128
  IPv6 gateway......................: ::
  IPv4 address......................: 192.168.30.253
  Subnet mask.......................: 255.255.255.0
  Gateway...........................: 192.168.30.254
  Physical address..................: 54-89-98-F9-38-81
  DNS server........................: 8.8.8.8
  ```