From: ying chang (ying_c@xxxxxxxxxxx)
Date: Sat Mar 23 2002 - 19:44:19 GMT-3
Hi,
I'm wondering why you don't have "ppp chap password cisco" in your
configurations. "ppp callback secure" is needed, otherwise the router will
not callback. If you take it out, make sure put it back. Use "debug dialer
event" should help too.
Chang
>From: "Nick Shah" <nshah@connect.com.au>
>Reply-To: "Nick Shah" <nshah@connect.com.au>
>To: "Lab Candidate" <labccie@yahoo.com>, "Ahmed Mamoor Amimi"
><mamoor@ieee.org>, <ccielab@groupstudy.com>
>Subject: Re: ISDN callback scenario
>Date: Sun, 24 Mar 2002 09:10:19 +1100
>
>hmm...on one router you have got ppp multilink configured on the client
>side, and not on the server, This *may* cause dialer callback-secure to
>reject the call as improperly configured. try removing ppp multilink.
>
>If that still doesnt resolve the issue, I would do a debug on ppp nego. &
>authentication and see that r2/r3 is getting authenticated and negotiating
>call back parameters...
>
>hth
>Nick
>
>-----Original Message-----
>From: Lab Candidate <labccie@yahoo.com>
>To: Ahmed Mamoor Amimi <mamoor@ieee.org>; ccielab@groupstudy.com
><ccielab@groupstudy.com>
>Date: Saturday, 23 March 2002 8:47
>Subject: Re: ISDN callback scenario
>
>
> >I took out dialer callback secure and it still desn't work giving the
>same
>error message "callback
> >is not configured for user r2". But it works perfectly when I changed it
>to
>caller ID callback.
> >Any ider what's going on here?
> >
> >
> >--- Ahmed Mamoor Amimi <mamoor@ieee.org> wrote:
> >> first try this with the minimum config.
> >> remove the call-back secure then try.
> >>
> >> i was wondering if call-back works with multilink.. !! let me know ..
> >>
> >> -Mamoor
> >>
> >>
> >> ----- Original Message -----
> >> From: Lab Candidate <labccie@yahoo.com>
> >> To: <ccielab@groupstudy.com>
> >> Sent: Saturday, March 23, 2002 12:59 PM
> >> Subject: ISDN callback scenario
> >>
> >>
> >> > r2 and r3 are setup with basic ISDN callback as below.
> >> > r2 callback client, r3 callback server.
> >> > everything is configured as CCO example, but when r2 calls r3
> >> > when r2 pings r3, r2 calls and disconnects, and waiting for r3.
> >> > but r3 never calls back.
> >> > r3 debug says "callback is not configured for user r2"
> >> > debug output and r2/r3 configs attached below.
> >> > what's the problem here please?
> >> >
> >> > r3#
> >> > 2d05h: %LINK-3-UPDOWN: Interface BRI0/0:1, changed state to up
> >> > 2d05h: BR0/0:1 DDR: No callback configured for user r2.
> >> > 2d05h: BR0/0:1 DDR: disconnecting call
> >> > 2d05h: %ISDN-6-CONNECT: Interface BRI0/0:1 is now connected to 2588
>r2
> >> > 2d05h: %LINK-3-UPDOWN: Interface BRI0/0:1, changed state to down
> >> > 2d05h: BR0/0:1 DDR: disconnecting call
> >> >
> >> > ===============r2==================
> >> > version 12.2
> >> > service timestamps debug uptime
> >> > service timestamps log uptime
> >> > no service password-encryption
> >> > !
> >> > hostname r2
> >> > !
> >> > no logging buffered
> >> > !
> >> > username r3 password 0 cisco
> >> > ip subnet-zero
> >> > !
> >> > !
> >> > interface BRI0/0
> >> > ip address 40.40.40.1 255.255.255.0
> >> > encapsulation ppp
> >> > dialer map snapshot 1 name r3 broadcast 2589
> >> > dialer map ip 40.40.40.2 name r3 broadcast 2589
> >> > dialer load-threshold 50 either
> >> > dialer-group 1
> >> > isdn switch-type basic-ni
> >> > isdn spid1 2588 2588
> >> > isdn spid2 3588 3588
> >> > no cdp enable
> >> > ppp callback request
> >> > ppp authentication chap
> >> > ppp multilink
> >> > !
> >> > dialer-list 1 protocol ip permit
> >> > !
> >> > !
> >> > line con 0
> >> > exec-timeout 0 0
> >> > line aux 0
> >> > line vty 0 4
> >> > password tts
> >> > no login
> >> > !
> >> > end
> >> >
> >> > r2#
> >> >
> >> >
> >> > ============r3=============
> >> > version 12.2
> >> > service timestamps debug uptime
> >> > service timestamps log uptime
> >> > no service password-encryption
> >> > !
> >> > hostname r3
> >> > !
> >> > !
> >> > username r2 password 0 cisco
> >> > ip subnet-zero
> >> > !
> >> > isdn switch-type basic-ni
> >> > !
> >> > interface BRI0/0
> >> > ip address 40.40.40.2 255.255.255.0
> >> > encapsulation ppp
> >> > dialer callback-secure
> >> > dialer map snapshot 1 name r2 broadcast 2588
> >> > dialer map ip 40.40.40.1 name r2 class dc1 broadcast 2588
> >> > dialer-group 1
> >> > isdn switch-type basic-ni
> >> > isdn spid1 2589 2589
> >> > isdn spid2 3589 3589
> >> > snapshot server 5 dialer
> >> > ppp callback accept
> >> > ppp authentication chap
> >> > !
> >> > map-class dialer dc1
> >> > dialer callback-server username
> >> >
> >> > dialer-list 1 protocol ip permit
> >> > !
> >> > line con 0
> >> > line aux 0
> >> > line vty 0 4
> >> > password tts
> >> > no login
> >> > !
> >> > ntp master 1
> >> > end
> >> >
> >> > r3#
> >> >
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