Cisco 2500 Router - DSL Authentication

[rpz620]

Has anyone had any luck utilizing a Cisco 2500 router to authenticate to a PPP DSL connection (Verizon) ... any pointers?

 

[Rucus1]

I have done it with other cisco routers before. How are you hooking the router to the DSL? pppoe ?

 

[rpz620]

yes, PPPOE and I am using a transceiver to connect the line to the AUI port.

 

[Rucus1]

Authentication between two routers is a two way process. You authentication to there router and there router authenticates to you. When I set it up before I had to start out by figureing out which auth method they used chap or pap. You can do this by issueing a debug ppp nego and debug ppp auth commands. After you figure out the hostname of the remote router you need to make a local user account that matches that hostname and has no password. This will allow there router to authenticate to you. You also are going to need vpdn set up like this:

vpdn-group 1
request-dialin
protocol pppoe

interface Ethernet1
no ip address
ip tcp adjust-mss 1452
pppoe enable
pppoe-client dial-pool-number 1
!
!
interface Dialer0
ip address 140.10.10.5 255.255.255.0 (can be negoed)
ip nat outside
ip mtu 1492
encapsulation ppp
dialer pool 1
dialer-group 1
ppp authentication chap
!

 

[Rucus1]

You can also turn off two way chap by useing
ppp authentication chap callin

This way you wont have to create a local use of the remote router. Here is a link to a description of how the auth works.

http://www.cisco.com/warp/public/131/ppp_callin_hostname.html

If you still cant figure it out post a message explaining your trouble.

 

[sack]

okay, im a bell south cust. which uses ppoe. How could i use a cisco 2500 router to get signed online? I have a linksys router switch combo.... which i but i have a cisco 1900 switch and 2500 router. how can i use these cisco devices instead of the linkysys box?

 

[cisco42]

Which version of IOS does support PPPoE client on cisco 2500 routers ? (which version are you using ?)
I can't find any on Feature Navigator.

Thanks for help.

Stephane

 

[sack]

I have not figured out how to do it as yet. However, my understanding is that you will need ios 12 or higher, which my router has.