This sample configuration shows you how to support a Point-to-Point Protocol over Ethernet (PPPoE) client when it is connected to the Ethernet interface of a Cisco 827 Digital Subscriber Line (DSL) Router.
The Cisco 827 is configured with RFC1483 bridging and terminates on a Cisco 6400 Universal Access Concentrator (UAC) that has been configured to support PPPoE using a multipoint ATM subinterface.
The PPPoE feature allows you to initiate a PPP session on a simple bridging Ethernet connected client. The session is transported over the Asynchronous Transfer Mode (ATM) link through encapsulated Ethernet-bridged frames. The session can be terminated at either a local exchange carrier central office or an Internet Service Provider (ISP) point of presence.
PPPoE is a client-initiated connection. On the Customer Premises Equipment (CPE) side, a PC with an Ethernet Network Interface Card (NIC) and the PPPoE client code are established. This PC and other PCs are connected to the 827 Ethernet segment.
The 827 ATM interface is connected to a Cisco 6130 Digital Subscriber Line Access Multiplexer (DSLAM) and terminates on a Cisco 6400 UAC.
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There are no specific prerequisites for this document.
The information in this document is based on the software versions below.
Cisco 827-4V CPE Cisco 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.
In this section, you are presented with the information to configure the features described in this document.
This document uses the network setup shown in the diagram below.
This document uses the configurations shown below.
Note: In the Cisco 6400 NRP configuration, you set the Maximum Transmission Unit (MTU). For more information about changing the MTU size, see Troubleshooting MTU Size in PPPoE Dialin Connectivity.
Cisco 6400 NRP
Current configuration: ! version 12.1 no service pad service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R1 ! ip subnet-zero no ip routing ! interface Ethernet0 no ip address no ip directed-broadcast bridge-group 1 ! interface ATM0 no ip address no ip directed-broadcast no ip mroute-cache no atm ilmi-keepalive pvc 3/100 encapsulation aal5snap ! bundle-enable bridge-group 1 hold-queue 224 in ! ip classless no ip http server ! bridge 1 protocol ieee ! 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 ! ! line con 0 end
|Cisco 6400 NRP|
Current configuration: ! version 12.0 service timestamps debug uptime service timestamps log uptime no service password-encryption ! hostname NRP1 ! username <username> password <password> !--- Username/password must match !--- client username/password. ! redundancy main-cpu auto-sync standard no secondary console enable ip subnet-zero ip cef ! vpdn enable ! vpdn-group 1 accept-dialin protocol pppoe virtual-template 1 pppoe limit per-mac 101 pppoe limit per-vc 102 ! interface ATM0/0/0 no ip address no ip directed-broadcast no ip mroute-cache no atm ilmi-keepalive ! interface ATM0/0/0.1 multipoint no ip directed-broadcast pvc 3/100 encapsulation aal5snap protocol pppoe ! interface Ethernet0/0/1 ip address 10.0.0.1 255.0.0.0 no ip directed-broadcast ! interface Ethernet0/0/0 no ip address no ip directed-broadcast shutdown ! interface FastEthernet0/0/0 no ip address no ip directed-broadcast half-duplex ! interface Virtual-Template1 !--- Do not use a static IP assignment within a !--- virtual template; routing problems can occur. ip mtu 1492 ip unnumbered Ethernet0/0/1 !--- Always use the ip unnumbered command when !--- configuring a virtual template. no ip directed-broadcast ip mroute-cache peer default ip address pool <pool name> ppp authentication chap ! ip local pool <pool name> 10.0.0.2 10.0.0.12 ip classless no ip http server ! line con 0 ! end
There is currently no verification procedure available for this configuration.
There is currently no specific troubleshooting information available for this configuration.
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Refer to Cisco Technical Tips Conventions for information on conventions used in this document.