Configuring WIC-1ADSL on Cisco 2600 with PPPOA and PPPOE
Configuring a Cisco router to use the WIC-1ADSL card is one of the most commonly asked question by people in the Cisco forums. There are some interesting and compelling reasons to use a WIC card instead of connecting PPPOE through the ADSL modem in bridged mode. One of the most compelling reasons is the ability to use advanced QOS features such as interleaving and fragmentation. Because the DSL WIC card shows up as an ATM WAN interface, the router is able to perform those advanced Quality of Service features. The overhead of encapsulating a packet in PPPOE and sending it to the modem over some length of cable is also a reason to use a WIC card instead of the modem.
It is important to realize that with most ISP’s you can configure the connection to use either PPPOA or PPPOE, the difference in configuration is very subtle however it can save you a couple of bits of overhead as PPPOE is encapsulated more time Than PPPOA. So without further a due:
First the PPPOE config:
The below is a complete config
Red is directly related to the WIC DSL config
Green is the rest of the config needed for a bare minimum working config.
##################################################################################
Using 5173 out of 29688 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname Lord_Yu
!
boot-start-marker
boot-end-marker
!
logging buffered 56000 debugging
no logging console
enable password 7 xxxxxxxxxxxxxxx
!
memory-size iomem 15
clock timezone est -5
clock summer-time est recurring 4 Sun Mar 1:00 4 Sat Oct 1:00
no aaa new-model
ip subnet-zero
ip cef
!
!
no ip domain lookup
ip domain name techinvasion.net
!
no ip bootp server
vpdn enable
vpdn-group 1
request-dialin
protocol pppoe
!
interface ATM0/0
no ip address
ip route-cache flow
no atm ilmi-keepalive
bundle enable
!
dsl operating-mode auto
pvc 8/35
encapsulation aal5mux ppp dialer
dialer pool-member 1
!
!
interface FastEthernet0/0
description LAN INTERFACE
ip address 10.0.0.254 255.255.255.0
ip nat inside
ip tcp adjust-mss 1460
duplex auto
speed auto
!
interface Ethernet1/0
no ip address
shutdown
half-duplex
!
interface Dialer1
description ADSL WAN DIALER
ip address negotiated
ip mtu 1492
ip nat outside
encapsulation ppp
ip route-cache flow
ip tcp adjust-mss 1452
dialer pool 1
dialer-group 1
no cdp enable
ppp authentication chap pap callin
ppp chap hostname xxxxxxx@xxxxxxxxxx.net
ppp chap password 7 xxxxxxxxxxxxx
ppp pap sent-username xxxxxxxx@xxxxxxxxxx.net password 7 xxxxxxxxxxxx
ppp ipcp dns request
!
ip nat translation timeout 3600
ip nat translation tcp-timeout 1200
ip nat translation finrst-timeout 15
ip nat translation syn-timeout 45
ip nat inside source list 10 interface Dialer1 overload
no ip http server
no ip http secure-server
ip flow-export destination 10.0.0.3 2055
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer1 permanent
!
!
!
ip access-list extended inbound
deny ip 0.0.0.0 0.255.255.255 any log-input
deny ip 10.0.0.0 0.255.255.255 any log-input
deny ip 127.0.0.0 0.255.255.255 any log-input
deny ip 169.254.0.0 0.0.255.255 any log-input
deny ip 172.16.0.0 0.15.255.255 any log-input
deny ip 192.168.0.0 0.0.255.255 any log-input
deny ip 224.0.0.0 15.255.255.255 any log-input
logging 10.0.0.3
access-list 10 permit 10.0.0.0 0.0.0.255
!
line con 0
password 7 xxxxxxxxxxx
line aux 0
line vty 0 4
password 7 xxxxxxxxxx
login
transport input telnet ssh
line vty 5
password 7 xxxxxxxxxxxx
login
!
ntp clock-period 17180335
ntp server 192.43.244.18
ntp server 129.6.15.28
!
end
The Following is the PPPOA Config:
It is not the full config only a partial config.
Notice how the dialer access-list is different and notice tha lack of the VPDN commands at the top of the config:
version 12.3
hostname Lord_Yu
!
boot-start-marker
boot-end-marker
!
logging buffered 4096 debugging
no logging console
enable password 7
!
memory-size iomem 15
clock timezone est -5
clock summer-time est recurring 4 Sun Mar 1:00 4 Sat Oct 1:00
no aaa new-model
ip subnet-zero
ip cef
!
no ip domain lookup
ip domain name techinvasion.net
!
interface ATM0/0
no ip address
ip route-cache flow
no atm ilmi-keepalive
bundle enable
!
dsl operating-mode auto
pvc 8/35
encapsulation aal5mux ppp dialer
dialer pool-member 1
!
!
interface FastEthernet0/0
description LAN INTERFACE
ip address 10.0.0.254 255.255.255.0
ip nat inside
ip tcp adjust-mss 1460
duplex auto
speed auto
ipv6 address autoconfig
ipv6 enable
!
interface Ethernet1/0
no ip address
shutdown
half-duplex
!
interface Dialer1
description ADSL WAN DIALER
ip address negotiated
ip mtu 1492
ip nat outside
encapsulation ppp
ip route-cache flow
ip tcp adjust-mss 1452
dialer pool 1
no cdp enable
ppp authentication chap pap callin
ppp chap hostname xxxxxxxxx@xxxxxxxx.net
ppp chap password 7 xxxxxxxxx
ppp pap sent-username xxxxxxx@xxxxxxxx.net password 7 xxxxxxxx
ppp ipcp dns request
!
ip nat inside source list 10 interface Dialer1 overload
no ip http server
no ip http secure-server
ip flow-export destination 10.0.0.3 2055
ip classless
access-list 10 permit 10.0.0.0 0.0.0.255
dialer-list 1 protocol ip permit