router as pppoe client in bridging mode

From: <koen_at_koenzeilstra.com>
Date: Wed, 13 Oct 2010 08:26:09 +0200 (CEST)

Hi group,

Below is a challenge i would like to present to you and hope someone can help
me out on this.

The task is relatively simple.

There are 3 routers in this scenario

R0 (f0/0) --- (f0/0) R1 (f1/0) --- (f0/0) R2

R0 is PPPoE server
R1 is PPPoE client
R2 is simulating a server or pc

The goal is to have all the public ip addresses configured on R2 and have R1
act as a bridge. R0 should route it's traffic directly towards R2 (over bridge
R1)

What i have achieved so far:
1. R1 as PPPoE client
2. R1 as bridge (without PPPoE)

The combination does not seem to work.

1.1.1.1 is R0
1.1.1.2 is R2

R2#ping 1.1.1.1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 1.1.1.1, timeout is 2 seconds:

*Mar 1 00:02:05.639: IP: tableid=0, s=1.1.1.2 (local), d=1.1.1.1
(FastEthernet0/0), routed via RIB
*Mar 1 00:02:05.639: IP: s=1.1.1.2 (local), d=1.1.1.1 (FastEthernet0/0), len
100, sending
*Mar 1 00:02:05.643: IP: s=1.1.1.2 (local), d=1.1.1.1 (FastEthernet0/0), len
100, encapsulation failed.
*Mar 1 00:02:07.639: IP: tableid=0, s=1.1.1.2 (local), d=1.1.1.1
(FastEthernet0/0), routed via RIB

Here's the config of R1:

version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R1
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
no ip routing
!
!
no ip cef
no ip domain lookup
!
!
!
!
!
interface FastEthernet0/0
  no ip address
  no ip route-cache
  duplex auto
  speed auto
  pppoe enable group global
  pppoe-client dial-pool-number 1
!
interface FastEthernet1/0
  no ip address
  no ip route-cache
  duplex auto
  speed auto
  bridge-group 1
!
interface Dialer1
  no ip address
  encapsulation ppp
  no ip route-cache
  dialer pool 1
  dialer-group 1
  ppp pap sent-username TEST password 0 TEST
  bridge-group 1
!
ip http server
ip forward-protocol nd
!
!
!
!
!
!
control-plane
!
bridge 1 protocol ieee
!
!
!
!
!
!
!
!
line con 0
  logging synchronous
line aux 0
line vty 0 4
  login
!
!
end

Any help is appreciated.

Thanks in advance,

Koen

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Received on Wed Oct 13 2010 - 08:26:09 ART

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