From: Kotte, Christopher (Christopher.Kotte@xxxxxxxxxx)
Date: Wed May 09 2001 - 00:20:20 GMT-3
All,
I am looking for a bit of clarification on an ISDN callback scenario.
2 routers, R5 and R6 are connected to each other. R5 initiated a call, the
call should be disconnected and R6 should call R5 back. Ok, I have R5 set
up as the callback client and R6 as the callback server - see configs below.
The problem that I have is when I have the following configuration on R6:
map-class dialer dialer1
dialer callback-server username
I see through debugs that there is no channel available. The call from r5
to r6 initially connectes, authenticates, disconnects (no pings have been
allowed), but on the return call from r6 it shows that there is no channel
available. When I change the above configuration to "dialer callback-server
dial-string" it works like a champ. I see that a route is installed and all
pings go through. Why would the plain old username option not work? It
looks like I have all username pwds set properly.
Also, I am working from 1 ISDN line that is installed in the house so I only
have 1 SPID on each side thus a total of 2B channels.
Any help is appreciated.
r5
username r6 password 0 cisco
!
interface BRI0
ip address 10.1.35.5 255.255.255.252
encapsulation ppp
isdn spid1 63049999530101
dialer map ip 10.1.35.6 name r6 broadcast 4999470
dialer-group 1
ppp callback request
ppp authentication chap
r6
username r5 password 0 cisco
!
interface BRI0
ip address 10.1.35.6 255.255.255.252
encapsulation ppp
isdn spid1 63049994700101
dialer enable-timeout 2
dialer map ip 10.1.35.5 name r5 class dialer1 broadcast 4999953
dialer-group 1
ppp callback accept
ppp authentication chap
!
map-class dialer dialer1
dialer callback-server username <- with this only it doesnt work!
dialer callback-server <---------- this works!
CK
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