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Cisco 800 Series Routers

Configuring a Cisco 827 Router With Two PVCs Using PPPoA (aal5mux ppp)

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Document ID: 12884

Updated: Nov 23, 2007

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Introduction

This sample configuration shows a Cisco 827 Router configured with two permanent virtual circuits (PVCs) and terminating on a Cisco 6400 Universal Access Concentrator (UAC). The UAC has a single node route processor (NRP) installed. Both PVCs use an interface dialer and have been configured by issuing the aal5mux ppp command. If you need more discussion about end-to-end ADSL PPPoA architecture, please read PPPoA Baseline Architecture document.

Before You Begin

Conventions

For more information on document conventions, see the Cisco Technical Tips Conventions.

Prerequisites

There are no specific prerequisites for this document.

Components Used

The information in this document is based on the software versions below.

  • Cisco 827-4V Customer Premises Equipment (CPE) IOS® Software Release 12.1(1)XB

  • Cisco 6400 UAC-NRP IOS Software Release 12.0(7)DC

  • Cisco 6400 UAC-NSP IOS Software Release 12.0(4)DB

  • Cisco 6130 DSLAM-NI2 IOS Software Release 12.1(1)DA

The information presented in this document was created from devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If you are working in a live network, ensure that you understand the potential impact of any command before using it.

Configure

In this section, you are presented with the information to configure the features described in this document.

Note: To find additional information on the commands used in this document, use the Command Lookup Tool (registered customers only) .

Network Diagram

This document uses the network setup shown in the diagram below.

827pppoa_2pvc.gif

Configurations

This document uses the configurations shown below.

Note: Make sure chap hostname differs for each PVC.

Cisco 827 
Current configuration: 
! 
version 12.1 
no service pad 
service timestamps debug datetime msec 
service timestamps log datetime msec 
!
hostname R1 
! 
ip subnet-zero 
! 
interface Loopback1 
 ip address 172.16.0.1 255.255.0.0 
 no ip directed-broadcast 
 
interface Loopback2 
 ip address 172.17.0.1 255.255.0.0 
 no ip directed-broadcast 
! 
interface Ethernet0 
 no ip address 
 no ip directed-broadcast 
! 
interface ATM0 
 no ip address 
 no ip directed-broadcast 
 no atm ilmi-keepalive 
 bundle-enable 
 hold-queue 224 in 
! 
interface ATM0.3 point-to-point 
 no ip directed-broadcast 
 no ip mroute-cache 
 pvc 3/100 
  encapsulation aal5mux ppp dialer 
  dialer pool-member 3 
 ! 
! 
interface ATM0.4 point-to-point 
 no ip directed-broadcast 
 no ip mroute-cache 
 PVC 4/100 
  encapsulation aal5mux ppp dialer 
  dialer pool-member 4 
 ! 
! 
interface Dialer3 
 ip address 172.18.0.1 255.255.0.0 
 no ip directed-broadcast 
 encapsulation ppp 
 no ip mroute-cache 
 dialer pool 3 
 dialer-group 1 
 ppp authentication chap callin 
 ppp chap hostname username1
 ppp chap password password1
! 
interface Dialer4 
 ip address 172.19.0.1 255.255.0.0 
 no ip directed-broadcast 
 encapsulation ppp 
 no ip mroute-cache 
 dialer pool 4 
 dialer-group 1 
 ppp authentication chap callin 
 ppp chap hostname username2
 ppp chap password password2
! 
ip classless 
ip route 172.20.0.1 255.255.255.255 Dialer3 
ip route 172.21.0.1 255.255.255.255 Dialer4 
! 
dialer-list 1 protocol ip permit 
! 
voice-port 1 
 timing hookflash-in 0 
! 
voice-port 2 
 timing hookflash-in 0 
! 
voice-port 3 
 timing hookflash-in 0 
! 
voice-port 4 
 timing hookflash-in 0 
! 
end

Cisco 6400-NRP 
Current configuration:
!
version 12.0 
service timestamps debug datetime msec 
service timestamps log datetime msec 
! 
hostname NRP 
! 
username username1 password password1 
username username2 password password2 
! 
redundancy 
 main-cpu 
  no auto-sync standard 
 no secondary console enable 
ip subnet-zero 
! 
interface Loopback33 
 ip address 172.20.0.1 255.255.0.0 
 no ip directed-broadcast 
! 
interface Loopback44 
 ip address 172.21.0.1 255.255.0.0 
 no ip directed-broadcast 
! 
interface ATM0/0/0 
 no ip address 
 no ip directed-broadcast 
 no ip mroute-cache 
 no ATM ilmi-keepalive 
! 
interface ATM0/0/0.3 point-to-point 
 no ip directed-broadcast 
 PVC 3/100 
  encapsulation aal5mux ppp Virtual-Template3 
 ! 
! 
interface ATM0/0/0.4 point-to-point 
 no ip directed-broadcast 
 no ip route-cache 
 PVC 4/100 
  encapsulation aal5mux ppp Virtual-Template4
 ! 
interface Ethernet0/0/1 
 no ip address 
 no ip directed-broadcast 
! 
interface Ethernet0/0/0 
 no ip directed-broadcast 
! 
interface FastEthernet0/0/0 
 no ip address 
 no ip directed-broadcast 
 full-duplex 
! 
interface Virtual-Template3 
 ip unnumbered Loopback33 
 no ip directed-broadcast 
 no peer default ip address 
 ppp authentication chap 
! 
interface Virtual-Template4 
 ip unnumbered Loopback44 
 no ip directed-broadcast 
 no peer default ip address 
 ppp authentication chap 
! 
ip classless 
ip route 172.16.0.0 255.255.0.0 172.19.0.1
ip route 172.17.0.0 255.255.0.0 172.18.0.1 
!
end

Verify

There is currently no verification procedure available for this configuration.

Troubleshoot

There is currently no specific troubleshooting information available for this configuration.

Related Information

Updated: Nov 23, 2007
Document ID: 12884