Use the home ADSL line and use the CISCO router to build the PPPoe Server so that the PC can access www.2cto.com R1 (config-if) # do sh runBuilding configuration... Current configuration: 1470 bytes! Version 12.4 service timestamps debug datetime msecservice timestamps log datetime msecno service password-encryption! Hostname R1! Boot-start-markerboot-end-marker !! No aaa new-modelmemory-size iomem 5 !! Ip cefno ip domain lookup !!! Vpdn enable !!!!!!!!!!!!!!! Username zhaojinglei password 0 cisco !! !!! Bba-group pppoe pppoeser virtual-template 1 !! Interface FastEthernet0/0 description $ ETH-WAN $ no ip address duplex auto speed auto pppoe enable group global pppoe-client dial-pool-number 1! Interface FastEthernet1/0 no ip address ip tcp adjust-mss 1412 duplex auto speed auto pppoe enable group pppoeser! Interface Virtual-Template1 ip address 172.16.1.254 255.255.255.0 ip nat inside ip virtual-reassembly peer default ip address pool zyh ppp authentication pap ppp ipcp dns 61.139.2.69 202.98.96.68! Interface Dialer0 ip address negotiated ip mtu 1452 ip nat outside ip virtual-reassembly encapsulation ppp dialer pool 1 dialer-group 1 ppp authentication pap callin ppp pap sent-username 6332155 @ myadsl password 0 666666! Ip local pool zyh 172.16.1.100 172.16.1.150ip http serverno ip http secure-server! Ip route 0.0.0.0 0.0.0.0 Dialer0! The ip nat inside source list 2 interface Virtual-Template1 overload! Access-list 2 permit anydialer-list 1 protocol ip permit !! Control-plane !!!!!!!!!! Line con 0 exec-timeout 0 0 logging synchronousline aux 0 line vty 0 4 !! End: the user name for building a PPPoe broadband connection on the computer. ****** password: ***** the connection is successful. The computer is connected to the Internet through the router in GNS3.