From: Budiman Notorahardjo (BudimanN@xxxxxxxxxxxxxx)
Date: Tue May 14 2002 - 23:13:43 GMT-3
Hi guys,
I have one headquarter router (HQ) and two branch routers (SLS and IBP).
These 2 branch routers are connected to HQ via ISDN.
HQ uses PRI interface meanwhile SLS and IBP use BRI interfaces.
The branch routers will trigger link if there is interesting packet.
The ISDN configuration in HQ is:
username SLS password cisco
username IBP password cisco
interface Serial1/1/1:15
ip address 43.68.105.1 255.255.255.0
encapsulation ppp
dialer idle-timeout 60
dialer map ip 43.68.105.2 name SLS
dialer map ip 43.68.105.8 name IBP
dialer hold-queue 5
dialer-group 1
ppp authentication chap
ppp multilink
hold-queue 75 in
dialer-list 1 protocol ip permit
The ISDN configuration in SLS is:
username HQ password cisco
interface BRI0
ip address 43.68.105.2 255.255.255.0
encapsulation ppp
dialer idle-timeout 60
dialer map ip 43.68.105.1 name HQ 68575757
dialer load-threshold 128 either
dialer-group 1
ppp authentication chap
ppp multilink
hold-queue 75 in
dialer-list 1 protocol ip permit
The ISDN configuration in IBP is:
username HQ password cisco
interface BRI0
ip address 43.68.105.8 255.255.255.0
encapsulation ppp
dialer idle-timeout 60
dialer map ip 43.68.105.1 name HQ 68575757
dialer load-threshold 128 either
dialer-group 1
ppp authentication chap
ppp multilink
hold-queue 75 in
dialer-list 1 protocol ip permit
The problem is:
SLS router can connect to HQ successfully, but IBP router cannot.
If I see the debug ISDN and PPP, the status of BRI is connected and PPP
authentication is successful.
The PPP negotiation is also successful, and the status of IPCP is open.
But, if I remove "dialer map ip 43.68.105.8 name IBP" command in HQ router,
IBP can connect successfully.
It is very weird, because the configuration of SLS and IBP are same.
The difference between SLS and IBP is in IOS.
HQ and SLS use IOS version 11.3, meanwhile IBP uses the newest IOS which is
12.2(7a).
Have you ever encountered similar problem?
Thanks,
Budiman N
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