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Configuration Guide Page 18 of 55
5.3 CHAP for authentication PPP
XSR-1805#show running-config
!!
! Version 4.0.0.0, Built Mar 26 2003, 19:47:17
!
hostname XSR-1805
username remote privilege 0 cleartext iamRemote
!
interface bri 1/0
isdn switch-type basic-net3
no shutdown
dialer pool-member 1 priority 0
!
access-list 110 permit ip any any
!
interface FastEthernet1
description "LAN-Interface1"
ip address 10.10.10.1 255.255.255.0
no shutdown
!
interface Dialer0
dialer pool 1
dialer string 112233
encapsulation ppp
dialer idle-timeout 30
dialer-group 1
ppp authentication chap
ppp chap hostname central
ppp chap password iamCentral
ip address 11.11.11.1 255.255.255.0
dialer map ip 11.11.11.2 112233
no shutdown
!
dialer-list 1 protocol ip list 110
!
end
XSR-1805#
Note: If you want to authenticate via CHAP in “passive mode”, you need to
delete the line “ppp authentication chap”. Now a unidirectional CHAP
authentication is possible.