ISDN callback scenario

From: Lab Candidate (labccie@xxxxxxxxx)
Date: Sat Mar 23 2002 - 04:59:33 GMT-3


   
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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