PPP Callback with Dialer Profiles

From: Michelle Famiglietti (michelle@xxxxxxxxxxxxxxxxx)
Date: Sat Apr 14 2001 - 16:28:32 GMT-3


   
We have a PRI on one end using dialer profiles and a BRI on the other end
using legacy dialer maps. We have configured the BRI to request callback
but the PRI will not negotiate.

Here is part of the configs:

BRI
hostname R2-CHARLIE
username test-pri password 0 cisco
isdn switch-type basic-ni
isdn voice-call-failure 0
!
interface BRI0/0
 ip address 192.168.182.27 255.255.255.0
 no ip redirects
 encapsulation ppp
 dialer map ip 192.168.182.1 name test-pri 703xxxxxxx
 dialer-group 1
 isdn switch-type basic-ni
 isdn spid1 703xxxxxxx0101 xxxxxxx
 isdn spid2 703xxxxxxx0101 xxxxxxx
 ppp callback request
 ppp authentication chap
dialer-list 1 protocol ip permit

PRI
hostname test-pri
username R2-CHARLIE password 0 cisco
isdn switch-type primary-ni
interface Serial1/0:23
 description ATT Local PRI Ckt 29-AHTZ-008043 LDN 703-234-2176 (2177)
 no ip address
 no ip redirects
 no ip directed-broadcast
 no ip proxy-arp
 encapsulation ppp
 dialer pool-member 1 min-link 4 max-link 10
 isdn switch-type primary-ni
 ppp callback accept
 ppp authentication chap
interface Dialer0
 ip address 192.168.182.1 255.255.255.0
 no ip redirects
 no ip directed-broadcast
 no ip proxy-arp
 encapsulation ppp
 dialer pool 1
 dialer callback-secure
 dialer string 703xxxxxxx
 dialer caller 703xxxxxxx
 dialer max-call 10
 dialer-group 1
 ppp callback accept
 ppp authentication chap
 ppp multilink

We haven't found a way to apply a map-class to the PRI end, although we
defined one:

map-class dialer callback
 dialer callback-server username

Debug traces appear to show that the BRI is requesting callback but the PRI
is ignoring the request.

>From the BRI:
4d02h: BR0/0:1 PPP: Treating connection as a callout
4d02h: BR0/0:1 PPP: Phase is ESTABLISHING, Active Open
4d02h: BR0/0:1 LCP: O CONFREQ [Closed] id 14 len 18
4d02h: BR0/0:1 LCP: AuthProto CHAP (0x0305C22305)
4d02h: BR0/0:1 LCP: MagicNumber 0x18F23B24 (0x050618F23B24)
4d02h: BR0/0:1 LCP: Callback 0 (0x0D0300)
4d02h: BR0/0:1 LCP: I CONFREQ [REQsent] id 21 len 30

>From the PRI:
*Mar 3 05:33:03: Se1/0:0 LCP: State is Listen
*Mar 3 05:33:04: Se1/0:0 LCP: I CONFREQ [Listen] id 14 len 18
*Mar 3 05:33:04: Se1/0:0 LCP: AuthProto CHAP (0x0305C22305)
*Mar 3 05:33:04: Se1/0:0 LCP: MagicNumber 0x18F23B24 (0x050618F23B24)
*Mar 3 05:33:04: Se1/0:0 LCP: Callback 0 (0x0D0300)
*Mar 3 05:33:04: Se1/0:0 LCP: O CONFREQ [Listen] id 21 len 30

We have to use dialer profiles, so going back to legacy ddr to make this
work is not an option. How do we get ppp callback to work successfully?

Thanks in advance!
Michelle



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