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PPPoA Baseline Architecture
Cisco DSL Router Configuration and Troubleshooting Guide - PPPoA Online Form
The sample configuration provided in the thread should work with any Cisco router with integrated ADSL modem running PPPoA; such as 827, 837, 857, 877, and on.
Since the configuration is coming from ISP UK Zen customer, some parameters might not work for your ISP (i.e. the VPI/VCI or PVC value). Following is some ISP known parameters which may change at anytime.
VPI/VCI pair 8/35
PPPoA service, with provided username and password
PPP authentication method is either PAP or CHAP
As with any ISP connection using ADSL, please confirm the ISP DSL signaling and VPI/VCI values.
version 12.3 no service pad service tcp-keepalives-in service tcp-keepalives-out service timestamps debug datetime msec localtime show-timezone service timestamps log datetime msec localtime show-timezone service password-encryption service sequence-numbers ! hostname adsl-router ! boot-start-marker boot-end-marker ! logging buffered 16256 debugging logging rate-limit 15 enable secret 5 xxx ! clock timezone GMT 0 clock summer-time BST recurring 3 Sat Mar 1:00 last Sun Oct 2:00 no aaa new-model ! ! ip subnet-zero no ip source-route ip cef ! ! ! ! no ip bootp server ! ! interface ATM0/0 no ip address no ip redirects no ip unreachables no ip proxy-arp no ip mroute-cache no atm ilmi-keepalive dsl operating-mode auto pvc 0/38 encapsulation aal5mux ppp dialer dialer pool-member 1 ! ! ! interface FastEthernet0/0 description LAN ip address 192.168.1.1 255.255.255.0 speed 100 full-duplex ip nat inside ! interface Dialer1 description WIC1-ADSL Dialer to Zen ip address negotiated no ip redirects no ip unreachables no ip proxy-arp ip nat outside encapsulation ppp dialer pool 1 dialer-group 2 dialer idle-timeout 0 no cdp enable ppp chap hostname zenxxx@zen ppp chap password 7 xxx ppp pap sent-username zenxxx@zen password 7 xxx ppp ipcp dns request accept ppp ipcp route default ppp ipcp address accept ! ! ! ip nat inside source list 1 interface Dialer1 overload no ip http server no ip http secure-server ip classless ! ! ! ! access-list 1 permit 192.168.1.0 0.0.0.255 ! dialer-list 2 protocol permit ip ! ! ! ! ! ! line con 0 line aux 0 line vty 0 4 ! ! end
More Sample Configuration
Official Cisco documentation
Configuring a Cisco 827 Router Using PPPoA With CHAP and PAP
»Anyone successfully using a Cisco 877 with Qwest?
»[Config] Configuring an 877W for use on BT Broadband help please
To find out the DNS IP addresses from your ISP for you to use through the ppp ipcp dns request accept, run debug ppp packet and terminal monitor commands. Watch the scrolling lines during this debug, especially regarding the IP address for the router and the DNS IP addresses. Once you see the DNS IP addresses from one of the scrolling lines, you can stop the debug and monitoring by issuing undebug ppp packet and terminal no monitor commands.