思科模拟器：交换机实现DHCP功能1、打开Cisco Packet Tracer，点击【交换机】，选择第六个图标3560交换机，按住鼠标左键拖动到工作区。只有这个交换机及以上级别的才具备DHCP功能，我们之前讲的2960只可以划分Vlan，不支持DHCP服务 2、在工作区内拖入3台电脑，用直通线和交换机连接 3、打开交换机属性界面，在命令行中输入代码，划分Vlan 10和Vlan 20两个Vlan 代码如下： 【 Switch>enable Switch#vlan database % Warning: It is recommended to configure VLAN from config mode, as VLAN database mode is being deprecated. Please consult user documentation for configuring VTP/VLAN in config mode. Switch(vlan)#vlan 10 name v10 VLAN 10 modified: Name: v10 Switch(vlan)#vlan 20 name v20 VLAN 20 modified: Name: v20 Switch(vlan)#exit 4、设置vlan10和Vlan20的默认地址池和网关dns，代码如下： 【 Switch(config)#ip dhcp pool vlan10 *设置相应的VLAN Switch(dhcp-config)#default-router 192.168.1.254 *设置该地址池的默认网关 Switch(dhcp-config)#network 192.168.1.0 255.255.255.0 *设置分配的地址池 Switch(dhcp-config)#dns-server 202.1.1.1 *设置该地址池的默认DNS地址。 Switch(dhcp-config)#ip dhcp pool vlan20 Switch(dhcp-config)#default-router 192.168.2.254 Switch(dhcp-config)#network 192.168.2.0 255.255.255.0 Switch(dhcp-config)#dns-server 202.1.1.2 Switch(dhcp-config)#ip dhcp pool vlan30 Switch(dhcp-config)#default-router 192.168.3.254 Switch(dhcp-config)#network 192.168.3.0 255.255.255.0 Switch(dhcp-config)#exit 5、 将交换机0/1和0/2端口加入Vlan10；0/3端口加入Vlan20，代码如下 【 Switch(config)#interface range f0/1 -2 Switch(config-if-range)#switchport access vlan 10 Switch(config-if-range)#interface range f0/3 Switch(config-if-range)#switchport access vlan 20 6、配置完成，我们打开主机0，让其主动获取ip，点击【ip配置】 7、在同一Vlan的主机0和主机1可以ping通 下面附上全部代码 【 交换机的配置：
Switch>enable Switch#vlan database % Warning: It is recommended to configure VLAN from config mode, as VLAN database mode is being deprecated. Please consult user documentation for configuring VTP/VLAN in config mode. Switch(vlan)#vlan 10 name v10 VLAN 10 modified: Name: v10 Switch(vlan)#vlan 20 name v20 VLAN 20 modified: Name: v20 Switch(vlan)#vlan 30 name v30 VLAN 30 modified: Name: v30 Switch(vlan)#exit APPLY completed. Exiting.... Switch# Switch(config)#ip dhcp pool vlan10 *设置相应的VLAN Switch(dhcp-config)#default-router 192.168.1.254 *设置该地址池的默认网关 Switch(dhcp-config)#network 192.168.1.0 255.255.255.0 *设置分配的地址池 Switch(dhcp-config)#dns-server 202.1.1.1 *设置该地址池的默认DNS地址。 Switch(dhcp-config)#ip dhcp pool vlan20 Switch(dhcp-config)#default-router 192.168.2.254 Switch(dhcp-config)#network 192.168.2.0 255.255.255.0 Switch(dhcp-config)#dns-server 202.1.1.2 Switch(dhcp-config)#ip dhcp pool vlan30 Switch(dhcp-config)#default-router 192.168.3.254 Switch(dhcp-config)#network 192.168.3.0 255.255.255.0 Switch(dhcp-config)#exit Switch(config)#ip dhcp excluded-address 192.168.3.2 192.168.3.10 *设置保留地址，此条命令不是保留192.168.3.2与192.168.3.10两个地址，而是保留192.168.3.2至192.168.3.10的全部地址。 Switch(config)#ip dhcp excluded-address 192.168.2.1 *保留单一的一个地址。 Switch(config)# Switch(config)#interface range f 0/1 -24 Switch(config-if-range)#spanning-tree portfast Switch(config-if-range)#exit Switch(config)#int f 0/1 Switch(config-if)#switchport access vlan 10 Switch(config-if)#int f 0/2 Switch(config-if)#switchport access vlan 20 Switch(config-if)#int range f 0/3 -5 Switch(config-if-range)#switchport access vlan 30 Switch(config-if-range)#exit Switch(config)# Switch(config)#interface vlan 10 %LINK-5-CHANGED: Interface Vlan10, changed state to up %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan10, changed state to up Switch(config-if)#ip add 192.168.1.254 255.255.255.0 Switch(config-if)#interface vlan 20 %LINK-5-CHANGED: Interface Vlan20, changed state to up Switch(config-if)#ip add 192.168.2.254 255.255.255.0 Switch(config-if)#interface vlan 30 %LINK-5-CHANGED: Interface Vlan30, changed state to up Switch(config-if)#ip add 192.168.3.254 255.255.255.0 Switch(config-if)#exit Switch(config)#ip routing 】 |
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