Configuring a Cisco 827 Router With IP Unnumbered E0, PPPoA, PPP-PAP, and Manually Configured Local LAN Devices

This sample configuration shows a Cisco 827 digital subscriber line (DSL) Router connecting to a Cisco 6130 Digital Subscriber Line Access Multiplexer (DSLAM) and terminating on a Cisco 6400 Universal Access Concentrator (UAC). The Cisco 827 has been configured with PPP over ATM (PPPoA).

The Internet Service Provider (ISP) has given the subscriber a range of IP addresses, 10.0.0.1 to 10.0.0.254, with a mask of 255.255.255.0. IP address "10.0.0.1" will be manually configured on the Ethernet interface of the Cisco 827. The subscriber will manually configure the remaining IP addresses on the local LAN devices. Each local device should be configured with a default gateway IP address of 10.0.0.1 (the IP address of the Cisco 827 Ethernet interface).

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 and hardware versions below.

Cisco 827-4V Customer Premises Equipment (CPE) IOS® Software Release 12.1(1)XB
Cisco 6400 UAC-Node Route Processor (NRP) IOS Software Release 12.0(7)DC
Cisco 6400 UAC-Node Switch Processor (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.

Cisco 827
! version 12.1 service timestamps debug datetime msec service timestamps datetime msec ! hostname R1 ! ip subnet-zero ! interface Ethernet0 ip address 10.0.0.1 255.255.255.0 no ip directed-broadcast no ip mroute-cache ! interface ATM0 no ip address no ip directed-broadcast no ip mroute-cache no atm ilmi-keepalive pvc 1/150 encapsulation aal5mux ppp dialer dialer pool-member 1 ! hold-queue 224 in ! interface Dialer0 ip unnumbered Ethernet0 no ip directed-broadcast encapsulation ppp dialer pool 1 dialer-group 1 ppp pap sent-username username password password ! ip classless ip route 0.0.0.0 0.0.0.0 Dialer0 no ip http server ! 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

! 
version 12.1
service timestamps debug datetime msec 
service timestamps datetime msec 
! 
hostname R1 
! 
ip subnet-zero 
! 

interface Ethernet0 
 ip address 10.0.0.1 255.255.255.0 
 no ip directed-broadcast 
 no ip mroute-cache
! 
interface ATM0 
 no ip address 
 no ip directed-broadcast 
 no ip mroute-cache 
 no atm ilmi-keepalive
 pvc 1/150 
  encapsulation aal5mux ppp dialer 
  dialer pool-member 1 
 !
 hold-queue 224 in 
! 
interface Dialer0 
 ip unnumbered Ethernet0 
 no ip directed-broadcast 
 encapsulation ppp 
 dialer pool 1 
 dialer-group 1 
 ppp pap sent-username username password password
! 
ip classless 
ip route 0.0.0.0 0.0.0.0 Dialer0 
no ip http server 
! 
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