实验对象一台路由器、一台交换机、四台PC机实验环境eNSP单臂路由实验命令 interface Ethernet0/0/0.10dot1q termination vid 10该接口属于vlan10ip add 192.168.10.1 24arp broadcast enable开启arp广播工作原理当数据包进入路由器时路由器首先根据目标地址结合自己的路由表将标签转换然后从相应的子接口发出。注 意从子接口发出报文会给报文嵌入相应标签实验要求1.按照拓扑配置vlan和trunk使各个vlan之间都能ping通2.在R2上基于接口口DHCP功能让四台PC通过DHCP获取IP地址3.PC5-1保留192.168.40.250-254地址不分配R2:interface Ethernet0/0/0.10dot1q termination vid 10ip address 192.168.10.1 255.255.255.0arp broadcast enabledhcp select interfacedhcp server dns-list 10.10.10.10 1.1.1.1interface Ethernet0/0/0.20dot1q termination vid 20ip address 192.168.20.1 255.255.255.0arp broadcast enabledhcp select interfacedhcp server dns-list 20.20.20.20 2.2.2.2interface Ethernet0/0/0.30dot1q termination vid 30ip address 192.168.30.1 255.255.255.0arp broadcast enabledhcp select interfacedhcp server dns-list 30.30.30.30 3.3.3.3interface Ethernet0/0/0.40dot1q termination vid 40ip address 192.168.40.1 255.255.255.0arp broadcast enabledhcp select interfacedhcp server excluded-ip-address 192.168.40.250 192.168.40.254dhcp server dns-list 40.40.40.40 4.4.4.4LSW5-1:interface GigabitEthernet0/0/1port link-type trunkport trunk allow-pass vlan 2 to 4094interface GigabitEthernet0/0/2port link-type accessport default vlan 10interface GigabitEthernet0/0/3port link-type accessport default vlan 40interface GigabitEthernet0/0/4port link-type accessport default vlan 20interface GigabitEthernet0/0/5port link-type accessport default vlan 30R2:LSW5-1:PC机通过DHCP方式获取IP地址测试PC之间的网络连通性PC4-1pingPC5-1PC5-1 保留192.168.40.250-254地址不分配