Legacy DDR with ISDN callback - how to restrict server to

From: Volkov, Dmitry (IDS Canada) (dmitry_volkov@ca.ml.com)
Date: Sat Jul 05 2003 - 19:07:49 GMT-3


Old problem, I checked archives, No result :(
R2 - callback client; R3 callback server; Legacy DDR. Callback works fine.
No AAA server.
 
Question: How to prevent R3 to do first call to R2 and to keep callback
client/server setup ?
 
One possible solution - to remove "dialer-group"
statement from R3 and to put very high "dialer idle-timeout " - this is
ugly.
 
If I remove dial-string from dialer map on R3 it will never call back. How
to tell R3 required string to call back in this case ?
 
 
username r3 password 0 cisco
R2#
interface BRI1/0
 ip address 133.33.23.2 255.255.255.252
 encapsulation ppp
 dialer map ip 133.33.23.1 name r3 broadcast 5550131
 dialer load-threshold 2 either
 dialer-group 1
 isdn switch-type basic-ni
 isdn spid1 42255501210101 5550121
 isdn spid2 42255501220101 5550122
 no cdp enable
 ppp callback request
 ppp authentication chap callin
 ppp multilink
end
 
username r2 password 0 cisco
R3#
interface BRI0
 ip address 133.33.23.1 255.255.255.252
 encapsulation ppp
 dialer map ip 133.33.23.2 name r2 class test broadcast 5550121
 dialer-group 1
 isdn switch-type basic-ni
 isdn spid1 42255501310101 5550131
 isdn spid2 42255501320101 5550132
 no cdp enable
 ppp callback accept
 ppp authentication chap callin
 ppp multilink
end
!
map-class dialer test
 dialer callback-server username



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