PPOE help only ever used PPOA on 877 routers

jamesgonzo · ‎04-22-2009

Hi,

I have only ever configured Cisco 877 routers for PPOA ADSL lines in the UK, I now have to configure another 877 for a new VPN on Ireland which use PVC 8/38 (normally 0/38 in UK) and PPOE instead of PPOA.

I have the configure attched, what do I need to change for PPOE? I can see I need to change the PVC to 8/38, but I'm not sure from then on.

Collin Clark · ‎04-23-2009

Here's the working config of my PPoE connection at home.

interface FastEthernet0/1

description DSL WAN Interface

no ip address

no ip redirects

no ip unreachables

no ip proxy-arp

no ip mroute-cache

duplex auto

speed auto

pppoe enable

pppoe-client dial-pool-number 1

!

interface Dialer1

description DSL WAN Dialer$FW_OUTSIDE$

ip address negotiated

no ip unreachables

ip nat outside

ip virtual-reassembly

encapsulation ppp

no ip mroute-cache

dialer pool 1

dialer-group 1

no cdp enable

ppp authentication pap callin

ppp pap sent-username CORP@static.sbcglobal.net password 0 SeCrEt

dialer-list 1 protocol ip permit

Hope that helps.

jamesgonzo · ‎04-23-2009

Thanks, what router do you have? I think I have the wrong one, I have an 877 which has an ATM port and not and Ethernet like yours.

Collin Clark · ‎04-23-2009

That's from an 871. Here's one from an 877.

interface ATM0

no ip address

no atm ilmi-keepalive

pvc 0/35

pppoe-client dial-pool-number 1

!

dsl operating-mode auto

!

interface Dialer0

description Virtual Public Interface

ip address 75.50.95.73 255.255.255.248

ip access-group outside_in in

ip mtu 1452

ip flow ingress

ip inspect STATEFUL_FW out

ip nat outside

ip virtual-reassembly

encapsulation ppp

dialer pool 1

dialer-group 1

no cdp enable

ppp authentication pap callin

ppp chap hostname username@static.sbcglobal.net

ppp chap password 0 SeCrEtPaSsWd

ppp pap sent-username username@static.sbcglobal.net password 0 SeCrEtPaSsWd

!

ip route 0.0.0.0 0.0.0.0 Dialer0 permanent

As you stated before, you'll have to change the ATM pvc.

whiteford · ‎04-23-2009

Great, apart from changing the PVC I notice the only other part I have to add is the ppoe setting under the ATM?

What are the differences between the ppoe and ppoa as thought it was just the port on the back, I immediately assumed as it was ethernet I would need an 871!

jamesgonzo · ‎05-01-2009

Hi Collin,

Just one last thing, does this look ok on my 877 before I ship it off:

interface ATM0

no ip address

no ip mroute-cache

atm vc-per-vp 64

no atm ilmi-keepalive

pvc 8/35

pppoe-client dial-pool-number 1

!

dsl operating-mode auto

It was originally a PPOA router, so should I remove "atm vc-per-vp 64"?

interface Dialer1

ip address negotiated

ip access-group inbound in

encapsulation ppp

ip route-cache flow

dialer pool 1

dialer-group 1

no cdp enable

ppp authentication chap pap callin

ppp chap hostname eircom

ppp chap password 0 broadband

ppp pap sent-username broadband password 0 broadband

crypto map Crypto_Map

Thanks

Collin Clark · ‎05-01-2009

It won't hurt anything being in there. Make sure you create the dialer pool as well (it's not posted). Is the connection really ppp?

jamesgonzo · ‎05-01-2009

I can see the dialer pool under my dialer 1 interface, or should this be somewhere else?

Are the DSL lines normally CHAP, is my config just using either PPP or CHAP?