The Cisco 1700, 2600, and 3600 series routers support the Asymmetric Digital Subscriber Line (ADSL) WAN Interface Card (WIC). All three platforms are configured essentially the same, but there are differences in hardware and in the Cisco IOS® Software release required for each one. Throughout this document, the Cisco 1700/2600/3600 is referred to as the Cisco ADSL WIC.
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 ADSL WIC.
The Cisco ADSL WIC is configured with RFC 1483 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 ATM link via 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 ADSL WIC Ethernet segment.
The ADSL WIC ATM interface is connected to a Cisco 6130 DSL Access Multiplexer (DSLAM) and terminates on a Cisco 6400 UAC.
Before you attempt this configuration, please ensure that you use one of these prerequisite software releases:
Cisco 6400 UAC-NRP IOS Software Release 12.1(3)DC1
Cisco 6400 UAC-NSP IOS Software Release 12.1(3)DB
Cisco 6130 DSLAM-NI2 IOS Software Release 12.1(5)DA
The information in this document is based on these software and hardware versions.
To support the ADSL WIC on the Cisco 2600 or 3600, these hardware components are required:
2600: Chassis WIC slots, NM-2W
3600: NM-1FE1R2W, NM-1FE2W, NM-2FE2W, NM-2W
Note: For the Cisco 3600, ADSL is not supported on WIC NM-1E1R2W, NM-1E2W, or NM-2E2W.
These are the minimum Cisco IOS Software Releases required to support the ADSL WIC:
Cisco IOS Software Release 12.1(5)YB (Plus versions only) on the Cisco 2600 or 3600
Cisco IOS Software Release IOS 12.1(3)XJ or later (Plus versions or ADSL feature set only) on the Cisco 1700. The ADSL feature set is identified by "y7" in the image name; for example, c1700-sy7-mz.121-3.XJ.bin.
Note: When you download the image for the Cisco 1700, make sure you select the image name of 1700. Do not download a 1720 or a 1750 image; the features do not support the ADSL WIC.
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 in a live network, ensure that you understand the potential impact of any command before you use use it.
For more information on document conventions, see the Cisco Technical Tips Conventions.
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, refer to Troubleshooting MTU Size in PPPoE Dialin Connectivity.
|Cisco ADSL WIC|
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 FastEthernet0 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 ! 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 !--- The username and password must match client username and 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.