Mục đích bài lab: Hướng dẫn cấu hình hoàn chỉnh: ADSL, BRAS, VPN server(router), VPN client. Ở đây sẽ kết hợp cả VPN site-to-site và VPN client-to-site (easy VPN) Cấu hình ADSL (client 1 và client 2, ở đây do không có modem nên ta giả định router làm ADSL client 2) ADSL1 Code: ADSL1#sh run hostname ADSL1 ! ! ip dhcp pool pool172 import all network 172.16.1.0 255.255.255.0 default-router 172.16.1.254 ! interface ATM0/0 no ip address no atm ilmi-keepalive dsl operating-mode auto pvc 8/35 pppoe-client dial-pool-number 1 ! ! interface Ethernet0/0 ip address 172.16.1.254 255.255.255.0 ip nat inside half-duplex ! interface Dialer1 ip address negotiated ip nat outside encapsulation ppp dialer pool 1 ! ip nat inside source list 1 interface Dialer1 overload ip http server no ip http secure-server ip classless ip route 0.0.0.0 0.0.0.0 Dialer1 ! ! access-list 1 permit 172.16.1.0 0.0.0.255 ! ADSL1#sh ip route 100.0.0.0/32 is subnetted, 2 subnets C 100.0.0.6 is directly connected, Dialer1 C 100.0.0.1 is directly connected, Dialer1 172.16.0.0/24 is subnetted, 1 subnets C 172.16.1.0 is directly connected, Ethernet0/0 S* 0.0.0.0/0 is directly connected, Dialer1 ADSL1#sh ip int br Interface IP-Address OK? Method Status Protocol ATM0/0 unassigned YES NVRAM up up Ethernet0/0 172.16.1.254 YES NVRAM up up Virtual-Access1 unassigned YES unset up up Dialer1 100.0.0.6 YES IPCP up up ADSL 2 Code: ADSL2#sh run hostname ADSL2 ip dhcp pool client import all network 10.0.0.0 255.255.255.0 dns-server 10.0.0.254 default-router 10.0.0.254 ! interface ATM0/0 no ip address no atm ilmi-keepalive dsl operating-mode auto pvc 8/35 pppoe-client dial-pool-number 1 ! interface FastEthernet0/0 ip address 10.0.0.254 255.255.255.0 ip nat inside duplex auto speed auto ! interface Dialer1 ip address negotiated ip nat outside encapsulation ppp dialer pool 1 ! ip nat inside source list 1 interface Dialer1 overload ! ip route 0.0.0.0 0.0.0.0 Dialer1 ! ! access-list 1 permit 10.0.0.0 0.0.0.255 ! ADSL2#sh ip route 100.0.0.0/32 is subnetted, 2 subnets C 100.0.0.1 is directly connected, Dialer1 C 100.0.0.3 is directly connected, Dialer1 10.0.0.0/24 is subnetted, 1 subnets C 10.0.0.0 is directly connected, FastEthernet0/0 S* 0.0.0.0/0 is directly connected, Dialer1 ADSL2#sh ip int br Interface IP-Address OK? Method Status Protocol ATM0/0 unassigned YES NVRAM up up FastEthernet0/0 10.0.0.254 YES NVRAM up up Virtual-Access1 unassigned YES unset up up Dialer1 100.0.0.3 YES IPCP up up . lab: Hướng dẫn cấu hình hoàn chỉnh: ADSL, BRAS, VPN server(router), VPN client. Ở đây sẽ kết hợp cả VPN site-to-site và VPN client-to-site (easy VPN) Cấu hình ADSL (client 1 và client 2, ở đây