AR28/AR46系列路由器DHCP Clint的典型配置

AR28/AR46系列路由器DHCP Client典型配置

【需求】

路由器作为DHCP Client，获取接口的动态IP地址。

主要用在使用路由器的以太网接口通过LAN方式接入公网的组网。

 

【组网图】

 

【配置脚本】

RouterA配置脚本

# sysname RouterA # radius scheme system # domain system # interface Ethernet1/0/0 ip address dhcp-alloc      /配置DHCP方式获取地址/ # interface Ethernet1/0/1 ip address 192.168.0.1 255.255.255.0 # interface NULL0 # ip route-static 0.0.0.0 0.0.0.0 202.101.68.1 preference 60 /指定默认出口路由/ # user-interface con 0 user-interface vty 0 4 # return

 

【验证】

通过disp int 可以查看接口获取的IP地址

[Quidway]disp int e 1/0/0

Ethernet1/0/0 current state :UP  

Line protocol current state :UP

Description :  Ethernet1/0/0 Interface

The Maximum Transmit Unit is 1500, Hold timer is 10(sec)

Internet Address is 202.101.xx.4/24, acquired via DHCP

IP Sending Frames' Format is PKTFMT_ETHNT_2, Hardware address is 00e0-fc45-2ca7

Media type is twisted pair, loopback not set, promiscuous mode not set

100Mb/s, Full-duplex, link type is autonegotiation

Output flow-control is disabled, input flow-control is disabled

Output queue : (Urgent queue : Size/Length/Discards)  0/50/0

Output queue : (Protocol queue : Size/Length/Discards) 0/500/0

Output queue : (FIFO queuing : Size/Length/Discards)  0/75/0

    Last 300 seconds input rate 0.00 bytes/sec, 0.00 packets/sec

    Last 300 seconds output rate 0.00 bytes/sec, 0.00 packets/sec

    Input: 406 packets, 57174 bytes, 406 buffers

           218 broadcasts, 0 multicasts, 0 pauses

           0 errors, 0 runts, 0 giants

           0 crc, 0 align errors, 0 overruns

           0 dribbles, 0 drops, 0 no buffers

    Output:268 packets, 37113 bytes, 269 buffers

           86 broadcasts, 19 multicasts, 0 pauses

           0 errors, 0 underruns, 0 collisions

           0 deferred, 0 lost carriers 

 

【提示】

1、为了实现上网功能必须指定默认路由器。该网关的地址可以通过debug dhcp client packet获得。将设备的默认路由指向该网关就可以了。该默认网关一般都是固定不变的，不会随地址的获取和释放而变化。

2、该配置经常需要和NAT配置结合起来，实现内网用户上网功能。