- 主机通过DHCP协议动态获取IP地址和DNS地址
- 模拟实现可用于不同楼层不同部门/科室等不同网段实现互联。
- 模拟实现可用于不同部门/科室分类别连接外网。
- eNSP 1.3.00.100 V100R003C000SPC100
- window 10
- 路由器开启DHCP全局使能，让路由器开启DHCP功能。
- 配置IP地址池分配给VLAN 10，地址范围192.168.10.0/24，网关地址192.168.10.254，域名服务器地址8.8.8.8。这里VLAN没有意义，只是说明，真正起作用的是网关，即连接到网关地址192.168.10.254互联的主机开启DHCP即可获得这个地址池分配。
- 配置IP地址池分配给VLAN 20，地址范围192.168.20.0/24，网关地址192.168.20.254，域名服务器地址8.8.8.8。这里VLAN没有意义，只是说明，真正起作用的是网关，即连接到网关地址192.168.20.254互联的主机开启DHCP即可获得这个地址池分配。
- 开启与三层交换机LWS1互联接口的DHCP使能，PC主机发送DHCP Discover报文会被接收处理。
sys Enter system view, return user view with Ctrl+Z. [AR1]dhcp enable Info: The operation may take a few seconds. Please wait for a moment.done. [AR1]ip pool pool-10 Info: It's successful to create an IP address pool. [AR1-ip-pool-pool-10]network 192.168.10.0 mask 24 [AR1-ip-pool-pool-10]gateway-list 192.168.10.254 [AR1-ip-pool-pool-10]dns-list 8.8.8.8 [AR1-ip-pool-pool-10]q [AR1] [AR1]ip pool pool-20 Info: It's successful to create an IP address pool. [AR1-ip-pool-pool-20]network 192.168.20.0 mask 24 [AR1-ip-pool-pool-20]gateway-list 192.168.20.254 [AR1-ip-pool-pool-20]dns-list 8.8.8.8 [AR1-ip-pool-pool-20]q [AR1] [AR1]interface GigabitEthernet 0/0/1 [AR1-GigabitEthernet0/0/1]dhcp select global [AR1-GigabitEthernet0/0/1]q [AR1]q save The current configuration will be written to the device. Are you sure to continue? (y/n)[n]:y It will take several minutes to save configuration file, please wait....... Configuration file had been saved successfully Note: The configuration file will take effect after being activated完整配置
dis current-configuration [V200R003C00] # sysname AR1 # snmp-agent local-engineid 800007DB03000000000000 snmp-agent # clock timezone China-Standard-Time minus 08:00:00 # portal local-server load flash:/portalpage.zip # drop illegal-mac alarm # dns resolve dns server 8.8.8.8 # wlan ac-global carrier id other ac id 0 # set cpu-usage threshold 80 restore 75 # dhcp enable # acl number 2000 rule 5 permit source 192.168.0.0 0.0.255.255 # ip pool pool-10 gateway-list 192.168.10.254 network 192.168.10.0 mask 255.255.255.0 dns-list 8.8.8.8 # ip pool pool-20 gateway-list 192.168.20.254 network 192.168.20.0 mask 255.255.255.0 dns-list 8.8.8.8 # aaa authentication-scheme default authorization-scheme default accounting-scheme default domain default domain default_admin local-user admin password cipher %$%$K8m.Nt84DZ}e#<0`8bmE3Uw}%$%$ local-user admin service-type http # firewall zone Local priority 15 # interface Ethernet0/0/0 # interface Ethernet0/0/1 # interface Ethernet0/0/2 # interface Ethernet0/0/3 # interface Ethernet0/0/4 # interface Ethernet0/0/5 # interface Ethernet0/0/6 # interface Ethernet0/0/7 # interface GigabitEthernet0/0/0 ip address 192.168.137.2 255.255.255.0 nat outbound 2000 # interface GigabitEthernet0/0/1 ip address 192.168.100.2 255.255.255.0 dhcp select global # interface NULL0 # ip route-static 0.0.0.0 0.0.0.0 192.168.137.1 ip route-static 192.168.0.0 255.255.0.0 192.168.100.1 # user-interface con 0 authentication-mode password user-interface vty 0 4 user-interface vty 16 20 # wlan ac # return交换机LWS1配置
- 交换机开启DHCP全局使能，让路由器开启DHCP功能。
- 配置VLAN 10口为DHCP中继（中转站），DHCP 服务器地址为192.168.100.2。
- 配置VLAN 20口为DHCP中继（中转站），DHCP 服务器地址为192.168.100.2。
[LSW1]dhcp enable Info: The operation may take a few seconds. Please wait for a moment.done. [LSW1]interface Vlanif 10 [LSW1-Vlanif10]dhcp select relay [LSW1-Vlanif10]dhcp relay server-ip 192.168.100.2 [LSW1-Vlanif10]q [LSW1] [LSW1]interface Vlanif 20 [LSW1-Vlanif20]dhcp select relay [LSW1-Vlanif20]dhcp relay server-ip 192.168.100.2 [LSW1-Vlanif20]q [LSW1]q完整配置save The current configuration will be written to the device. Are you sure to continue?[Y/N]y Now saving the current configuration to the slot 0. Dec 23 2021 17:54:40-08:00 LSW1 %%01CFM/4/SAVE(l)[0]:The user chose Y when decid ing whether to save the configuration to the device. Save the configuration successfully.
PC机配置和测试dis current-configuration # sysname LSW1 # vlan batch 10 20 100 # cluster enable ntdp enable ndp enable # drop illegal-mac alarm # dhcp enable # diffserv domain default # drop-profile default # aaa authentication-scheme default authorization-scheme default accounting-scheme default domain default domain default_admin local-user admin password simple admin local-user admin service-type http # interface Vlanif1 # interface Vlanif10 ip address 192.168.10.254 255.255.255.0 dhcp select relay dhcp relay server-ip 192.168.100.2 # interface Vlanif20 ip address 192.168.20.254 255.255.255.0 dhcp select relay dhcp relay server-ip 192.168.100.2 # interface Vlanif100 ip address 192.168.100.1 255.255.255.0 # interface MEth0/0/1 # interface GigabitEthernet0/0/1 port link-type trunk port trunk allow-pass vlan 10 20 # interface GigabitEthernet0/0/2 port link-type trunk port trunk allow-pass vlan 10 20 # interface GigabitEthernet0/0/3 port link-type access port default vlan 100 # interface GigabitEthernet0/0/4 # interface GigabitEthernet0/0/5 # interface GigabitEthernet0/0/6 # interface GigabitEthernet0/0/7 # interface GigabitEthernet0/0/8 # interface GigabitEthernet0/0/9 # interface GigabitEthernet0/0/10 # interface GigabitEthernet0/0/11 # interface GigabitEthernet0/0/12 # interface GigabitEthernet0/0/13 # interface GigabitEthernet0/0/14 # interface GigabitEthernet0/0/15 # interface GigabitEthernet0/0/16 # interface GigabitEthernet0/0/17 # interface GigabitEthernet0/0/18 # interface GigabitEthernet0/0/19 # interface GigabitEthernet0/0/20 # interface GigabitEthernet0/0/21 # interface GigabitEthernet0/0/22 # interface GigabitEthernet0/0/23 # interface GigabitEthernet0/0/24 # interface NULL0 # ip route-static 0.0.0.0 0.0.0.0 192.168.100.2 # user-interface con 0 user-interface vty 0 4 # return
*选择DCHP，点击应用。
PC>ipconfig link local IPv6 address...........: fe80::5689:98ff:fe49:126c IPv6 address......................: :: / 128 IPv6 gateway......................: :: IPv4 address......................: 0.0.0.0 Subnet mask.......................: 0.0.0.0 Gateway...........................: 0.0.0.0 Physical address..................: 54-89-98-49-12-6C DNS server........................: PC>ipconfig /renew IP Configuration link local IPv6 address...........: fe80::5689:98ff:fe49:126c IPv6 address......................: :: / 128 IPv6 gateway......................: :: IPv4 address......................: 192.168.10.253 Subnet mask.......................: 255.255.255.0 Gateway...........................: 192.168.10.254 Physical address..................: 54-89-98-49-12-6C DNS server........................: 8.8.8.8 PC>ping 8.8.8.8 Ping 8.8.8.8: 32 data bytes, Press Ctrl_C to break From 8.8.8.8: bytes=32 seq=1 ttl=109 time=125 ms From 8.8.8.8: bytes=32 seq=2 ttl=109 time=110 ms From 8.8.8.8: bytes=32 seq=3 ttl=109 time=110 ms From 8.8.8.8: bytes=32 seq=4 ttl=109 time=125 ms From 8.8.8.8: bytes=32 seq=5 ttl=109 time=109 ms --- 8.8.8.8 ping statistics --- 5 packet(s) transmitted 5 packet(s) received 0.00% packet loss round-trip min/avg/max = 109/115/125 ms PC>ping www.baidu.com www.baidu.com -> www.a.shifen.com www.a.shifen.com -> www.wshifen.com Ping www.wshifen.com [103.235.46.39]: 32 data bytes, Press Ctrl_C to break From 103.235.46.39: bytes=32 seq=1 ttl=40 time=265 ms From 103.235.46.39: bytes=32 seq=2 ttl=40 time=234 ms From 103.235.46.39: bytes=32 seq=3 ttl=40 time=235 ms From 103.235.46.39: bytes=32 seq=4 ttl=40 time=250 ms From 103.235.46.39: bytes=32 seq=5 ttl=40 time=234 ms --- 103.235.46.39 ping statistics --- 5 packet(s) transmitted 5 packet(s) received 0.00% packet loss round-trip min/avg/max = 234/243/265 ms PC>
