Cisco guys and security expert,
here I meet a problem. I have condfig 2 router use ISDN call back
successfully. and authention the call back server to TACACS server. do step
by step with Cisco DOC, everything works.
then next step I try let call back server get the callback-dialstring from
TACACS server, I can see the callback-dialer string has been send to call
back server from TACACS server, but call back server does not call back to
the client.
could you pls help me to check what's the problem or give me the Cisco web
site to find the correct answer? thanks
here is my config fot your reference.
this is call back client configure:
interface BRI0/0
ip address 200.50.35.5 255.255.255.252
encapsulation ppp
ip ospf authentication message-digest
ip ospf message-digest-key 2 md5 7 cisco
ip ospf demand-circuit
no ip mroute-cache
dialer idle-timeout 40
dialer map ip 200.50.35.6 name r1 broadcast 384960
dialer load-threshold 100 either
dialer-group 1
isdn switch-type basic-net3
no peer neighbor-route
no cdp enable
ppp callback request
ppp authentication chap callin
ppp chap hostname r1
ppp multilink
dialer-list 1 protocol ip permit
here is the config of call back server
aaa new-model
aaa authentication login loginau group tacacs+ local
aaa authentication ppp default group tacacs+
interface BRI0/0
ip address 200.50.35.6 255.255.255.252
encapsulation ppp
no ip route-cache
ip ospf authentication message-digest
ip ospf message-digest-key 2 md5 7 cisco
no ip mroute-cache
dialer callback-secure
dialer aaa ===> want to get the dialer string from TACACS server
dialer map ip 200.50.35.5 name r4 class callback broadcast
dialer load-threshold 1 either
dialer-group 1
isdn switch-type basic-net3
no cdp enable
ppp callback accept
ppp authentication chap
ppp multilink
map-class dialer callback
dialer callback-server username
dialer-list 1 protocol ip permit
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