Re: PPP CHAP PASSWORD

From: William (wdoyle123@comcast.net)
Date: Sat Feb 08 2003 - 12:04:05 GMT-3


Can anyone explain under what circumstances you would use this command?

"PPP CHAP PASSWORD"

I have tried many variations and cannot seem to get this to be applied. I
read that this was used as the default in the event no username was found in
the database but when I do this I get an authentication failure.

Here is my config for what I described.

Her is my config: R2 is calling R1

R2

username R1 password 0 cisco

interface BRI1/0

ip address 12.12.12.2 255.255.255.0

encapsulation ppp

dialer map ip 12.12.12.1 name R1 broadcast 2018662911

dialer map ip 12.12.12.1 name R1 broadcast 2018662913

dialer load-threshold 1 outbound

dialer-group 1

isdn switch-type basic-ni

isdn spid1 20133015680101 3301568

isdn spid2 20133015790101 3301579

ppp authentication chap

ppp multilink

R1

!

interface BRI2/0

ip address 12.12.12.1 255.255.255.0

encapsulation ppp

dialer map ip 12.12.12.2 name R2 broadcast 2013301568

dialer map ip 12.12.12.2 name R2 broadcast 2013301579

dialer load-threshold 1 outbound

dialer-group 1

isdn switch-type basic-ni

isdn spid1 20186629110101 8662911

isdn spid2 20186629130101 8662913

ppp authentication chap

ppp chap password 7 030752180500 (password cisco)

ppp multilink

Here is output:

--More--

13:27:04: %LINK-3-UPDOWN: Interface BRI2/0:1, changed state to up

--More--

13:27:04: BR2/0:1 PPP: Treating connection as a callin

13:27:05: BR2/0:1 CHAP: O CHALLENGE id 38 len 23 from "R1"

13:27:05: BR2/0:1 CHAP: I CHALLENGE id 38 len 23 from "R2"

13:27:05: BR2/0:1 CHAP: Waiting for peer to authenticate first

13:27:05: BR2/0:1 CHAP: I RESPONSE id 38 len 23 from "R2"

13:27:05: BR2/0:1 CHAP: Unable to validate Response. Username R2 not found

13:27:05: BR2/0:1 CHAP: O FAILURE id 38 len 26 msg is "Authentication
failure"

--More--

13:27:05: %LINK-3-UPDOWN: Interface BRI2/0:1, changed state to down

13:27:06: %LINK-3-UPDOWN: Interface BRI2/0:1, changed state to up

13:27:06: BR2/0:1 PPP: Treating connection as a callin

13:27:07: BR2/0:1 CHAP: O CHALLENGE id 39 len 23 from "R1"

13:27:07: BR2/0:1 CHAP: I CHALLENGE id 39 len 23 from "R2"

13:27:07: BR2/0:1 CHAP: Waiting for peer to authenticate first

13:27:07: BR2/0:1 CHAP: I RESPONSE id 39 len 23 from "R2"

13:27:07: BR2/0:1 CHAP: Unable to validate Response. Username R2 not found

13:27:07: BR2/0:1 CHAP: O FAILURE id 39 len 26 msg is "Authentication
failure"
.



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