configure ppoe in cisco 881 isr router with fiber broad ONT

yagon0rma · ‎06-07-2017

Hi Everyone,

I am new to cisco routers, currently, i am configuring my cisco 881 isr router to connect to the internet using fiber broadband ONT,

my provider, gave me the pppoe credentials (username and password) and with the ppp authentication type which is pap, primary and secondary dns.

Here is the configuration after running the show run, and still i cannot get ip-address, and wan or fe4 port is not lit at all. Thank you in advance everyone. hope someone will get notice.

WANRTR#show run
Building configuration...
Current configuration : 2062 bytes
!
! Last configuration change at 06:11:08 UTC Wed Jun 7 2017
version 15.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname WANRTR
!
boot-start-marker
boot-end-marker
!
aqm-register-fnf
!
enable secret 5 xxx
!
no aaa new-model
!
!
!
!
!
!

!
!
!
!
ip cef
no ipv6 cef
!
!
!
!
!
multilink bundle-name authenticated
!
!
!
!
!
!
!
license udi pid C881-K9 sn FGL201822Q5
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
interface FastEthernet0
no ip address
!
interface FastEthernet1
no ip address
!
interface FastEthernet2
no ip address
!
interface FastEthernet3
no ip address
!
interface FastEthernet4
description ### WAN ###
no ip address
duplex full
speed 100
pppoe enable group global
pppoe-client dial-pool-number 1
!
interface Vlan1
description ### LAN LOGICAL ###
ip address 10.168.0.1 255.255.255.0
no autostate
!
interface Dialer1
description ### FIBER-INTERNET-LOGICAL ###
ip address negotiated
ip mtu 1492
encapsulation ppp
dialer pool 1
dialer-group 1
ppp authentication pap callin
ppp pap sent-username xxx password 0 xxx
ppp ipcp dns 203.116.0.36 203.116.1.78
ppp ipcp route default
!
ip forward-protocol nd
no ip http server
no ip http secure-server
!
!
ip route 0.0.0.0 0.0.0.0 Dialer1
ip route 0.0.0.0 0.0.0.0 10.168.0.2
ip route 10.168.1.0 255.255.255.0 10.168.0.2
ip route 10.168.2.0 255.255.255.0 10.168.0.2
ip route 10.168.3.0 255.255.255.0 10.168.0.2
ip route 10.168.4.0 255.255.255.0 10.168.0.2
ip route 10.168.5.0 255.255.255.0 10.168.0.2
ip route 10.168.6.0 255.255.255.0 10.168.0.2
ip route 10.168.7.0 255.255.255.0 10.168.0.2
!
dialer-list 1 protocol ip permit
!
!
control-plane
!
!
!
mgcp behavior rsip-range tgcp-only
mgcp behavior comedia-role none
mgcp behavior comedia-check-media-src disable
mgcp behavior comedia-sdp-force disable
!
mgcp profile default
!
!
!
!
!
line con 0
no modem enable
line aux 0
line vty 0 4
login
transport input all
!
scheduler allocate 20000 1000
!
end
WANRTR#

Again thank you in advance

Mark Malone · ‎06-07-2017

Hi

going by your config you shouldn't really need a default route , as its asking for default to be injected from the ISP with this command ppp ipcp route default when it receives an ip from DHCP

definite remove this.... ip route 0.0.0.0 0.0.0.0 10.168.0.2 , you can still leave the dialer route but its should really be auto injected

you shouldn't need statics to reach ips in same subnet either

have you debugged the ppp negotiation and authentication to see what happening at the protocol level , 9 /10 its the ISP side if your not getting an IP address and without that ip address you cant break out

http://www.cisco.com/c/en/us/support/docs/wan/point-to-point-protocol-ppp/25440-debug-ppp-negotiation.html

http://www.cisco.com/c/en/us/support/docs/long-reach-ethernet-lre-digital-subscriber-line-xdsl/asymmetric-digital-subscriber-line-adsl/71124-adslguide-pppoedsl-ts.html

yagon0rma · ‎06-07-2017

Hi Mark,

thank you for the quick response.

Yes i used debug ppp nego.

I have a hub and spoke topology hub is located in our hq and the 7 spoke is located in different area. This is being service by different provider. Our Internet Fiber Broadband is service by another provider. By the way, the hub and spoke topology have no internet. thats the reason why i have a lot of static route. I want to share my internet to hub and subsequently, hub will give internet to the spoke. My internet have its own cisco 881 router and so with the hub. the internet router will act as the dhcp server. I hope its clear. :)

again thank you in advance.

Georg Pauwen · ‎06-07-2017

Hello,

so, as I understand it, your spoke router is the PPPoE client, and the hub is the PPPoE server ? Do you have this working for any of the other 7 spoke sites ?

If you FastEthernet 4 WAN port is not even lit, that is where you have to start. Try and set speed and duplex to auto on the FastEthernet4 interface.

Also, post the configuration of the hub.

yagon0rma · ‎06-08-2017

hello there,

Thanks for the quick response.

hub and spoke is already running. i recently change isp for our internet connection. take note hub and spoke topology is under different provider (no internet connectivity).

my goal here is, from my new internet isp, i want to give internet access to the hub. (** internet has its own cisco 881 isr router.) i am setting the internet router which uses pppoe authentication.

Thank you in advance