DSL: Point to Point Protocol over Ethernet (PPPoE) Configuration Guide on ASR920

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Updated:August 22, 2016

Document ID:200590

Bias-Free Language

The documentation set for this product strives to use bias-free language. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Learn more about how Cisco is using Inclusive Language.

Introduction

This document describes the procedure to configure Point to Point Protocol over Ethernet (PPPoE) on Cisco ASR 920 Aggregation Service Router acting as Client.

Prerequisites

Requirements

Cisco recommends that you have knowledge of End-to-End Layer 1 connectivity.

Components Used

The information in this document is based on Cisco ASR 920 hardware.

The information in this document was created from the devices in a specific lab environment, All of the devices used in this document started with a cleared(default) configuration.

Note: If your network is live, ensure that you understand the potential impact of any command.

Configure

Note: Use the Command Lookup Tool (registered customers only) in order to obtain more information on the commands used in this section.

Configuration on the Routers are from a back to back setup (Client and Server).

Client Configuration

It is specific to the ASR 920 Platform.


interface GigabitEthernet0/0/1
 no ip address
 no ip redirects
 no ip proxy-arp
 ip tcp adjust-mss 1452
 speed 1000
 no negotiation auto
 cdp enable
 ip virtual-reassembly
 service instance 10 ethernet
  encapsulation untagged etype pppoe-all
  bridge-domain 10
!
interface Dialer1
 ip address negotiated
 encapsulation ppp
 dialer pool 1
 dialer-group 1
 ppp authentication pap chap callin
 ppp chap hostname cisco
 ppp chap password 0 cisco123
 ppp pap sent-username cisco password 0 cisco123
end
!
interface BDI10
 no ip address
 pppoe enable group global
 pppoe-client dial-pool-number 1
!
ip route 0.0.0.0 0.0.0.0 Dialer1

Server Configuration

This remains the same in all scenarios, irrespective of the platform used on client side.


 username cisco password 0 cisco123 
 ! 
 bba-group pppoe global 
  virtual-template 1 
 ! 
 interface GigabitEthernet0/0 
  ip address 192.168.1.1 255.255.255.0 
  ip rip advertise 4 
  load-interval 30 
  duplex auto 
  speed auto 
  pppoe enable group global 
 ! 
 interface Virtual-Template1 
  mtu 1492 
  ip unnumbered GigabitEthernet0/0 
  peer default ip address pool PPPoE_Pool 
  ppp authentication pap chap 
 ! 
 ip local pool PPPoE_Pool 10.1.1.1 10.1.1.100

Verify

Use this section to confirm that your configuration works properly.

These debugs are enabled on both Client and Server:

Debug ppp negotiation
Debug ppp authentication
Debug ppp error
Debug dialer

Client Logs:

 *Jul 14 20:23:09.486: ppp13 PPP: Phase is ESTABLISHING 
 *Jul 14 20:23:09.486: Vi2 PPP: Using dialer call direction 
 *Jul 14 20:23:09.486: Vi2 PPP: Treating connection as a callout 
 *Jul 14 20:23:09.486: Vi2 PPP: Session handle[6300000D] Session id[13] 
 *Jul 14 20:23:09.486: Vi2 LCP: Event[OPEN] State[Initial to Starting] 
 *Jul 14 20:23:09.486: Vi2 PPP: No remote authentication for call-out 
 *Jul 14 20:23:09.486: Vi2 LCP: O CONFREQ [Starting] id 1 len 10 
 *Jul 14 20:23:09.486: Vi2 LCP:    MagicNumber 0xB07C8578 (0x0506B07C8578) 
 *Jul 14 20:23:09.486: Vi2 LCP: Event[UP] State[Starting to REQsent] 
 *Jul 14 20:23:09.488: Vi2 LCP: I CONFREQ [REQsent] id 1 len 18 
 *Jul 14 20:23:09.488: Vi2 LCP:    MRU 1492 (0x010405D4) 
 *Jul 14 20:23:09.488: Vi2 LCP:    AuthProto PAP (0x0304C023) 
 *Jul 14 20:23:09.488: Vi2 LCP:    MagicNumber 0xED0582E9 (0x0506ED0582E9) 
 *Jul 14 20:23:09.488: Vi2 LCP: O CONFNAK [REQsent] id 1 len 8 
 *Jul 14 20:23:09.488: Vi2 LCP:    MRU 1500 (0x010405DC) 
 *Jul 14 20:23:09.489: Vi2 LCP: Event[Receive ConfReq-] State[REQsent to REQsent] 
 *Jul 14 20:23:09.489: Vi2 LCP: I CONFACK [REQsent] id 1 len 10 
 *Jul 14 20:23:09.489: Vi2 LCP:    MagicNumber 0xB07C8578 (0x0506B07C8578) 
 *Jul 14 20:23:09.489: Vi2 LCP: Event[Receive ConfAck] State[REQsent to ACKrcvd] 
 *Jul 14 20:23:09.490: Vi2 LCP: I CONFREQ [ACKrcvd] id 2 len 18 
 *Jul 14 20:23:09.490: Vi2 LCP:    MRU 1500 (0x010405DC) 
 *Jul 14 20:23:09.490: Vi2 LCP:    AuthProto PAP (0x0304C023) 
 *Jul 14 20:23:09.490: Vi2 LCP:    MagicNumber 0xED0582E9 (0x0506ED0582E9) 
 *Jul 14 20:23:09.490: Vi2 LCP: O CONFACK [ACKrcvd] id 2 len 18 
 *Jul 14 20:23:09.490: Vi2 LCP:    MRU 1500 (0x010405DC) 
 *Jul 14 20:23:09.490: Vi2 LCP:    AuthProto PAP (0x0304C023) 
 *Jul 14 20:23:09.490: Vi2 LCP:    MagicNumber 0xED0582E9 (0x0506ED0582E9) 
 *Jul 14 20:23:09.490: Vi2 LCP: Event[Receive ConfReq+] State[ACKrcvd to Open] 
 *Jul 14 20:23:09.499: Vi2 PPP: No authorization without authentication 
 *Jul 14 20:23:09.499: Vi2 PPP: Phase is AUTHENTICATING, by the peer 
 *Jul 14 20:23:09.499: Vi2 PAP: Using hostname from interface PAP 
 *Jul 14 20:23:09.499: Vi2 PAP: Using password from interface PAP 
 *Jul 14 20:23:09.499: Vi2 PAP: O AUTH-REQ id 1 len 19 from "cisco" 
 *Jul 14 20:23:09.499: Vi2 LCP: State is Open 
 *Jul 14 20:23:09.530: Vi2 PAP: I AUTH-ACK id 1 len 5 
 *Jul 14 20:23:09.530: Vi2 PPP: Phase is FORWARDING, Attempting Forward 
 *Jul 14 20:23:09.530: Vi2 PPP: Queue IPCP code[1] id[1] 
 *Jul 14 20:23:09.532: Vi2 PPP: Phase is ESTABLISHING, Finish LCP 
 *Jul 14 20:23:09.532: Vi2 PPP: Phase is UP 
 *Jul 14 20:23:09.532: Vi2 IPCP: Protocol configured, start CP. state[Initial] 
 *Jul 14 20:23:09.532: Vi2 IPCP: Event[OPEN] State[Initial to Starting] 
 *Jul 14 20:23:09.532: Vi2 IPCP: O CONFREQ [Starting] id 1 len 10 
 *Jul 14 20:23:09.532: Vi2 IPCP:    Address 0.0.0.0 (0x030600000000) 
 *Jul 14 20:23:09.532: Vi2 IPCP: Event[UP] State[Starting to REQsent] 
 *Jul 14 20:23:09.532: Vi2 PPP: Process pending ncp packets 
 *Jul 14 20:23:09.532: Vi2 IPCP: Redirect packet to Vi2 
 *Jul 14 20:23:09.532: Vi2 IPCP: I CONFREQ [REQsent] id 1 len 10 
 *Jul 14 20:23:09.532: Vi2 IPCP:    Address 192.168.1.1 (0x0306C0A80101) 
 *Jul 14 20:23:09.533: Vi2 IPCP: O CONFACK [REQsent] id 1 len 10 
 *Jul 14 20:23:09.533: Vi2 IPCP:    Address 192.168.1.1 (0x0306C0A80101) 
 *Jul 14 20:23:09.533: Vi2 IPCP: Event[Receive ConfReq+] State[REQsent to ACKsent] 
 *Jul 14 20:23:09.535: Vi2 IPCP: I CONFNAK [ACKsent] id 1 len 10 
 *Jul 14 20:23:09.535: Vi2 IPCP:    Address 10.1.1.1 (0x03060A010101) 
 *Jul 14 20:23:09.535: Vi2 IPCP: O CONFREQ [ACKsent] id 2 len 10 
 *Jul 14 20:23:09.535: Vi2 IPCP:    Address 10.1.1.1 (0x03060A010101) 
 *Jul 14 20:23:09.536: Vi2 IPCP: Event[Receive ConfNak/Rej] State[ACKsent to ACKsent] 
 *Jul 14 20:23:09.537: Vi2 IPCP: I CONFACK [ACKsent] id 2 len 10 
 *Jul 14 20:23:09.537: Vi2 IPCP:    Address 10.1.1.1 (0x03060A010101) 
 *Jul 14 20:23:09.537: Vi2 IPCP: Event[Receive ConfAck] State[ACKsent to Open] 
 *Jul 14 20:23:09.562: Vi2 IPCP: State is Open 
 *Jul 14 20:23:09.562: Di1 IPCP: Install negotiated IP interface address 10.1.1.1 
 *Jul 14 20:23:09.565: PPPoE : ipfib_encapstr  prepared 
 *Jul 14 20:23:09.566: Di1 Added to neighbor route AVL tree: topoid 0, address 192.168.1.1 
 *Jul 14 20:23:09.566: Di1 IPCP: Install route to 192.168.1.1 
 *Jul 14 20:23:09.567: Vi2 DDR: dialer protocol up 
 *Jul 14 20:23:09.567: PPPoE : ipfib_encapstr  prepared 
 *Jul 14 20:23:09.567: Di1 DDR: dialer protocol up 
 *Jul 14 20:23:10.235: %LINEPROTO-5-UPDOWN: Line protocol on Interface Virtual-Access2, changed state to up

 Client#sh pppoe session
     1 client session 

Uniq ID  PPPoE  RemMAC          Port                    VT  VA         State
           SID  LocMAC                                      VA-st      Type
    N/A      1  a0ec.f9d8.9dd0  BD10                    Di1 Vi2        UP      
                64f6.9d6e.dd3f                              UP

Server Logs:

* Jul 15 04:41:18.727: ppp1 PPP: Phase is ESTABLISHING 
 *Jul 15 04:41:18.727: ppp1 PPP: Using vpn set call direction 
 *Jul 15 04:41:18.727: ppp1 PPP: Treating connection as a callin 
 *Jul 15 04:41:18.727: ppp1 PPP: Session handle[BF000001] Session id[1] 
 *Jul 15 04:41:18.727: ppp1 LCP: Event[OPEN] State[Initial to Starting] 
 *Jul 15 04:41:18.727: ppp1 PPP LCP: Enter passive mode, state[Stopped] 
 *Jul 15 04:41:18.735: ppp1 LCP: I CONFREQ [Stopped] id 1 len 10 
 *Jul 15 04:41:18.735: ppp1 LCP:    MagicNumber 0xB07C8578 (0x0506B07C8578) 
 *Jul 15 04:41:18.735: ppp1 LCP: O CONFREQ [Stopped] id 1 len 18 
 *Jul 15 04:41:18.735: ppp1 LCP:    MRU 1492 (0x010405D4) 
 *Jul 15 04:41:18.735: ppp1 LCP:    AuthProto PAP (0x0304C023) 
 *Jul 15 04:41:18.735: ppp1 LCP:    MagicNumber 0xED0582E9 (0x0506ED0582E9) 
 *Jul 15 04:41:18.735: ppp1 LCP: O CONFACK [Stopped] id 1 len 10 
 *Jul 15 04:41:18.735: ppp1 LCP:    MagicNumber 0xB07C8578 (0x0506B07C8578) 
 *Jul 15 04:41:18.735: ppp1 LCP: Event[Receive ConfReq+] State[Stopped to ACKsent] 
 *Jul 15 04:41:18.735: ppp1 LCP: I CONFNAK [ACKsent] id 1 len 8 
 *Jul 15 04:41:18.735: ppp1 LCP:    MRU 1500 (0x010405DC) 
 *Jul 15 04:41:18.735: ppp1 LCP: O CONFREQ [ACKsent] id 2 len 18 
 *Jul 15 04:41:18.735: ppp1 LCP:    MRU 1500 (0x010405DC) 
 *Jul 15 04:41:18.735: ppp1 LCP:    AuthProto PAP (0x0304C023) 
 *Jul 15 04:41:18.735: ppp1 LCP:    MagicNumber 0xED0582E9 (0x0506ED0582E9) 
 *Jul 15 04:41:18.735: ppp1 LCP: Event[Receive ConfNak/Rej] State[ACKsent to ACKsent] 
 *Jul 15 04:41:18.739: ppp1 LCP: I CONFACK [ACKsent] id 2 len 18 
 *Jul 15 04:41:18.739: ppp1 LCP:    MRU 1500 (0x010405DC) 
 *Jul 15 04:41:18.739: ppp1 LCP:    AuthProto PAP (0x0304C023) 
 *Jul 15 04:41:18.739: ppp1 LCP:    MagicNumber 0xED0582E9 (0x0506ED0582E9) 
 *Jul 15 04:41:18.739: ppp1 LCP: Event[Receive ConfAck] State[ACKsent to Open] 
 *Jul 15 04:41:18.747: ppp1 PPP: Queue PAP code[1] id[1] 
 *Jul 15 04:41:18.763: ppp1 PPP: Phase is AUTHENTICATING, by this end 
 *Jul 15 04:41:18.763: ppp1 PAP: Redirect packet to ppp1 
 *Jul 15 04:41:18.763: ppp1 PAP: I AUTH-REQ id 1 len 19 from "cisco" 
 *Jul 15 04:41:18.763: ppp1 PAP: Authenticating peer cisco 
 *Jul 15 04:41:18.763: ppp1 PPP: Phase is FORWARDING, Attempting Forward 
 *Jul 15 04:41:18.763: ppp1 LCP: State is Open 
 *Jul 15 04:41:18.763: ppp1 PPP: Phase is AUTHENTICATING, Unauthenticated User 
 *Jul 15 04:41:18.763: ppp1 PPP: Sent PAP LOGIN Request 
 *Jul 15 04:41:18.763: ppp1 PPP: Received LOGIN Response PASS 
 *Jul 15 04:41:18.763: ppp1 IPCP: Authorizing CP 
 *Jul 15 04:41:18.763: ppp1 IPCP: CP stalled on event[Authorize CP] 
 *Jul 15 04:41:18.763: ppp1 IPCP: CP unstall 
 *Jul 15 04:41:18.763: ppp1 PPP: Phase is FORWARDING, Attempting Forward 
 *Jul 15 04:41:18.775: Vi1.1 PPP: Phase is AUTHENTICATING, Authenticated User 
 *Jul 15 04:41:18.775: Vi1.1 PAP: O AUTH-ACK id 1 len 5 
 *Jul 15 04:41:18.775: Vi1.1 PPP: Phase is UP 
 *Jul 15 04:41:18.775: Vi1.1 IPCP: Protocol configured, start CP. state[Initial] 
 *Jul 15 04:41:18.775: Vi1.1 IPCP: Event[OPEN] State[Initial to Starting] 
 *Jul 15 04:41:18.775: Vi1.1 IPCP: O CONFREQ [Starting] id 1 len 10 
 *Jul 15 04:41:18.775: Vi1.1 IPCP:    Address 192.168.1.1 (0x0306C0A80101) 
 *Jul 15 04:41:18.779: Vi1.1 IPCP: Event[UP] State[Starting to REQsent] 
 *Jul 15 04:41:18.779: Vi1.1 IPCP: I CONFREQ [REQsent] id 1 len 10 
 *Jul 15 04:41:18.779: Vi1.1 IPCP:    Address 0.0.0.0 (0x030600000000) 
 *Jul 15 04:41:18.783: Vi1.1 IPCP AUTHOR: Start.  Her address 0.0.0.0, we want 0.0.0.0 
 *Jul 15 04:41:18.783: Vi1.1 IPCP AUTHOR: Done.  Her address 0.0.0.0, we want 0.0.0.0 
 *Jul 15 04:41:18.783: Vi1.1 IPCP: Pool returned 10.1.1.1 
 *Jul 15 04:41:18.783: Vi1.1 IPCP: O CONFNAK [REQsent] id 1 len 10 
 *Jul 15 04:41:18.783: Vi1.1 IPCP:    Address 10.1.1.1 (0x03060A010101) 
 *Jul 15 04:41:18.783: Vi1.1 IPCP: Event[Receive ConfReq-] State[REQsent to REQsent] 
 *Jul 15 04:41:18.783: Vi1.1 IPCP: I CONFACK [REQsent] id 1 len 10 
 *Jul 15 04:41:18.783: Vi1.1 IPCP:    Address 192.168.1.1 (0x0306C0A80101) 
 *Jul 15 04:41:18.783: Vi1.1 IPCP: Event[Receive ConfAck] State[REQsent to ACKrcvd] 
 *Jul 15 04:41:18.783: Vi1.1 IPCP: I CONFREQ [ACKrcvd] id 2 len 10 
 *Jul 15 04:41:18.783: Vi1.1 IPCP:    Address 10.1.1.1 (0x03060A010101) 
 *Jul 15 04:41:18.783: Vi1.1 IPCP: O CONFACK [ACKrcvd] id 2 len 10 
 *Jul 15 04:41:18.783: Vi1.1 IPCP:    Address 10.1.1.1 (0x03060A010101) 
 *Jul 15 04:41:18.783: Vi1.1 IPCP: Event[Receive ConfReq+] State[ACKrcvd to Open] 
 *Jul 15 04:41:18.795: Vi1.1 IPCP: State is Open 
 *Jul 15 04:41:18.795: Vi1.1 Added to neighbor route AVL tree: topoid 0, address 10.1.1.1 
 *Jul 15 04:41:18.795: Vi1.1 IPCP: Install route to 10.1.1.1

 Server#show pppoe session 
      1 session  in LOCALLY_TERMINATED (PTA) State 
      1 session  total 

 Uniq ID  PPPoE  RemMAC          Port                    VT  VA         State 
            SID  LocMAC                                      VA-st      Type 
       1      1  64f6.9d6e.dd3f  Gi0/0                    1  Vi1.1      PTA   
                 a0ec.f9d8.9dd0                              UP

Troubleshoot

This section provides information you can use to troubleshoot your configuration.

Follow the standard PPP troubleshooting steps.

Note: If the BDI interface is not configured and the PPPoE Client Configuration is applied on Gigabit Ethernet interface, you will see that the PPPoE session does not get established and displays this error message.

 padi timer expired 
 Sending PADI: Interface = GigabitEthernet0/0/1

Related Information

Contributed by Cisco Engineers

Srinivasulu K.
Cisco TAC Engineer

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DSL: Point to Point Protocol over Ethernet (PPPoE) Configuration Guide on ASR920

Available Languages

Download Options

Bias-Free Language

Contents

Introduction

Prerequisites

Requirements

Components Used

Configure

Client Configuration

Server Configuration

Verify

Troubleshoot

Related Information

Contributed by Cisco Engineers

Was this Document Helpful?

Contact Cisco