The problem is that you cannot pass subnet information to a PPPOE client, nor can you have a single subnet running on multiple interfaces of a Cisco router. So, to get around that we have to be creative.
This base config that should get you up and running. Please adjust the basic info (username, password, interface names, etc) to match your router and account. This config should work on any Cisco with 2 ethernet ports running an IOS DSL Plus image of at least version:
12.2(4)T
12.1(5)YB4
12.2(2)XH
12.2(2)XQ
!!!begin config !!!
!
vpdn enable
no vpdn logging
!--- default
!
vpdn-group pppoe
request-dialin
!--- we are the PPPoE client requesting to establish
!--- a session with the aggregation unit (6400 NRP)
protocol pppoe
!
int Dialer1
ip unnumbered FastEthernet0
encapsulation ppp
mtu 1492
!--- Ethernet MTU is 1500 by default
!--- (1492 + 8 byte PPPoE headers = 1500)
ip tcp adjust-mss 1460
dialer pool 1
!--- ties to interface Ethernet0
dialer-group 1
ppp authentication chap callin
ppp chap yourusername@static_ameritech.net
ppp chap yourpassword
!
!
!--- internal FastEthernet network
!
interface FastEthernet0
ip address !your primary static here! 255.255.255.248
!
interface Ethernet0
pppoe enable
pppoe-client dial-pool-number 1
ip tcp adjust-mss 1460
!--- The PPPoE client code ties into a dialer
!--- interface upon which a virtual-access
!--- interface is cloned.
!
ip classless
ip route 0.0.0.0 0.0.0.0 dialer1
no ip http server
!
dialer-list 1 protocol ip permit
!
end
Make sure that all computers behind the router have their MTU set to 1492 or lower to avoid fragmentation issues that can render some websites unreachable.
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by dflanigan  edited by lev
last modified: 2006-02-16 17:46:01 |
