搭建DHCP中继服务(3)

3、DHCP服务开启后我们回到GNS3中，开启添加的3层交换机与2层交换机，并双击进入3层交换设备与2层交换设备，在2层交换设备中配置vlan，并将接入链路分别接入相对应的vlan中，将f1/0接口配置为trunk链路，在3层交换设备中同样设置vlan，然后进入vlan中配置IP地址，并指定IP地址192.168.100.100可以通过vlan在局域网中通信，最后将f1/0接口同样配置为trunk链路。

sw2#conf t //在2层交换设备中进入全局模式 Enter configuration commands, one per line. End with CNTL/Z. sw2(config)#vlan 10,20,100 //配置vlan10、20、100 sw2(config-vlan)#ex //退出vlan接口 sw2(config)#do show vlan-sw b //查看vlna是否配置成功 VLAN Name Status Ports ---- -------------------------------- --------- ------------------------------- 1 default active Fa1/0, Fa1/1, Fa1/2, Fa1/3 Fa1/4, Fa1/5, Fa1/6, Fa1/7 Fa1/8, Fa1/9, Fa1/10, Fa1/11 Fa1/12, Fa1/13, Fa1/14, Fa1/15 10 VLAN0010 active 20 VLAN0020 active //配置的vlan 100 VLAN0100 active 1002 fddi-default act/unsup 1003 token-ring-default act/unsup 1004 fddinet-default act/unsup 1005 trnet-default act/unsup sw2(config)#int f1/1 //进入f1/1接口 sw2(config-if)#sw m acc //进入配置链路 sw2(config-if)#sw acc vlan 100 //将链路接入vlan100 sw2(config-if)#ex //退出 sw2(config)#int f1/2 //进入f1/2接口 sw2(config-if)#sw m acc //进入配置链路 sw2(config-if)#sw acc vlan 10 //将链路接入vlan10 sw2(config-if)#ex //退出 sw2(config)#int f1/3 //进入f1/3接口 sw2(config-if)#sw m acc //进入配置链路 sw2(config-if)#sw acc vlan 20 //将链路接入vlan20 sw2(config-if)#ex //退出 sw2(config)#do show vlan-sw b //查看vlna VLAN Name Status Ports ---- -------------------------------- --------- ------------------------------- 1 default active Fa1/0, Fa1/4, Fa1/5, Fa1/6 Fa1/7, Fa1/8, Fa1/9, Fa1/10 Fa1/11, Fa1/12, Fa1/13, Fa1/14 Fa1/15 10 VLAN0010 active Fa1/2 20 VLAN0020 active Fa1/3 //链路成功接入vlan 100 VLAN0100 active Fa1/1 1002 fddi-default act/unsup 1003 token-ring-default act/unsup 1004 fddinet-default act/unsup 1005 trnet-default act/unsup sw2(config)#int f1/0 //进入f1/0接口 sw2(config-if)#sw m t //将接口配置为trunk sw2(config-if)#sw t en do //在trunk链路中封装dot1q协议 sw2(config-if)#ex //退出 sw2(config)#do show int f1/0 switchport //查看接口是否配置成功 Name: Fa1/0 Switchport: Enabled Administrative Mode: trunk //成功配置trunk链路 Operational Mode: trunk Administrative Trunking Encapsulation: dot1q Operational Trunking Encapsulation: dot1q Negotiation of Trunking: Disabled Access Mode VLAN: 0 ((Inactive)) Trunking Native Mode VLAN: 1 (default) Trunking VLANs Enabled: ALL Trunking VLANs Active: 1,10,20,100 Protected: false Priority for untagged frames: 0 Override vlan tag priority: FALSE Voice VLAN: none Appliance trust: none sw2(config)#no ip routing //关闭2层交换设备路由功能 sw3(config)#vlan 10,20,100 //在3层交换设备中配置vlan10、20、100 sw3(config-vlan)#ex //退出 sw3(config)#do show vlan-sw b //查看vlan VLAN Name Status Ports ---- -------------------------------- --------- ------------------------------- 1 default active Fa1/0, Fa1/1, Fa1/2, Fa1/3 Fa1/4, Fa1/5, Fa1/6, Fa1/7 Fa1/8, Fa1/9, Fa1/10, Fa1/11 Fa1/12, Fa1/13, Fa1/14, Fa1/15 10 VLAN0010 active 20 VLAN0020 active //配置成功 100 VLAN0100 active 1002 fddi-default act/unsup 1003 token-ring-default act/unsup 1004 fddinet-default act/unsup 1005 trnet-default act/unsup sw3(config)#int vlan 10 //进入虚拟接口vlan10 sw3(config-if)#ip add 192.168.10.1 255.255.255.0 //在接口中添加IP地址 sw3(config-if)#ip helper-address 192.168.100.100 //指定IP地址192.168.100.100可通过接口 sw3(config-if)#no shut //开启配置 sw3(config-if)#ex //退出 sw3(config)#int vlan 20 //进入虚拟接口vlan20 sw3(config-if)#ip add 192.168.20.1 255.255.255.0 //在接口中添加IP地址 sw3(config-if)#ip helper-address 192.168.100.100 //指定IP地址192.168.100.100可通过接口 sw3(config-if)#no shut //开启配置 sw3(config-if)#ex //退出 sw3(config)#int vlan 100 //进入虚拟接口vlan100 sw3(config-if)#ip add 192.168.100.1 255.255.255.0 //在接口中添加IP地址 sw3(config-if)#ip helper-address 192.168.100.100 //指定IP地址192.168.100.100可通过接口 sw3(config-if)#no shut //开启配置 sw3(config-if)#ex //退出 sw3(config)#int f1/0 //进入f1/0 接口 sw3(config-if)#sw m t //配置为trunk链路 *Mar 1 00:22:18.607: %DTP-5-TRUNKPORTON: Port Fa1/0 has become dot1q trunk *Mar 1 00:22:19.111: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan10, changed state to up *Mar 1 00:22:19.119: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan20, changed state to up *Mar 1 00:22:19.127: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan100, changed state to up sw3(config-if)#sw t en do //封装协议 sw3(config-if)#ex //突出 sw3(config)#do show int f1/0 switchport //查看trunk是否配置成功 Name: Fa1/0 Switchport: Enabled Administrative Mode: trunk //成功配置trunk链路 Operational Mode: trunk Administrative Trunking Encapsulation: dot1q Operational Trunking Encapsulation: dot1q Negotiation of Trunking: Disabled Access Mode VLAN: 0 ((Inactive)) Trunking Native Mode VLAN: 1 (default) Trunking VLANs Enabled: ALL Trunking VLANs Active: 1,10,20,100 Protected: false Priority for untagged frames: 0 Override vlan tag priority: FALSE Voice VLAN: none Appliance trust: none sw3(config)#do show ip int b //查看IP地址是否配入vlan，是否开启 Interface IP-Address OK? Method Status Protocol FastEthernet0/0 unassigned YES unset administratively down down FastEthernet0/1 unassigned YES unset administratively down down FastEthernet1/0 unassigned YES unset up up FastEthernet1/1 unassigned YES unset up down ...//省略部分内容... FastEthernet1/14 unassigned YES unset up down FastEthernet1/15 unassigned YES unset up down Vlan1 unassigned YES unset up up Vlan10 192.168.10.1 YES manual up up Vlan20 192.168.20.1 YES manual up up Vlan100 192.168.100.1 YES manual up up //成功配入，并开启

4、完成配置后我们来查看虚拟机客户端win 10、win 7是否自动获取IP地址