ISDN BRI，DDR技术的配置
两台路由器和两台PC，两台路由器以isdn相连.
r1:bri0:192.168.1.1/24
e0:192.168.10.1/24
spid:32177820010100
dia:7782001
r2:bri0:192.168.1.2/24
e0:192.168.20.1/24
spid:32177820020100
dia:7782002
以下便是具体的配置过程：
Press Enter to Start
Router>
Router>
Router>en
Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#int bri 0
Router(config-if)#ip add 192.168.1.1 255.255.255.0
Router(config-if)#no shut
%LINK-3-UPDOWN: Interface Bri0, changed state to up
Router(config-if)#int loopback 0
Router(config-if)#ip add 10.1.1 .1 255.255.255.0
Router(config-if)#no shut
Router(config-if)#exit
Router(config)#isdn switch-type ba
Router(config)#isdn switch-type basic-net3
Router(config)#username R2 password cisco
Router(config)#int bri 0
Router(config-if)#encapsulation ppp
%LINK-3-UPDOWN: Interface Bri0, changed state to down
%LINEPROTO-5-UPDOWN: Line protocol on Interface Bri0, changed state to down
Router(config-if)#ppp authentication chap
Router(config-if)#isdn spid1 32177820010100
Router(config-if)#dialer map ip 192.168.1.2 name R2 7782001
Router(config-if)#dialer-group 1
Router(config-if)#dialer-list 1 protocol ip permit
Router(config)#int bri 0
Router(config-if)#dialer idle-timeout 180
Router(config-if)#end
Router#copy run start
Destination filename [startup-config]?
Building configuration...
[OK]
Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#host R1
R1(config)#en
R1(config)#enable secret cisco
R1(config)#end
R1#conf t
Enter configuration commands, one per line. End with CNTL/Z.
R1(config)#ip route 192.168.20.0 255.255.255.0 192.168.1.2
R1(config)#end
R1#copy run start
Destination filename [startup-config]?
Building configuration...
[OK]
%LINK-3-UPDOWN: Interface Bri0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface Bri0, changed state to up
Press Enter to Start
Router>
Router>en
Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#
Router(config)#host R2
R2(config)#enable ?
secret Assign the privileged level secret
password Assign the privileged level password
R2(config)#enable secret cisco
R2(config)#int bri 0
R2(config-if)#ip add 192.168.1.2 255.255.255.0
R2(config-if)#no shut
%LINK-3-UPDOWN: Interface Bri0, changed state to up
R2(config-if)#int loopback 0
R2(config-if)#ip add 10.1.2 .1 255.255.255.0
R2(config-if)#no shut
R2(config-if)#exit
R2(config)#isdn switch-type basic-net3
R2(config)#username R1 password cisco
R2(config)#int bri 0
R2(config-if)#encapsulation ppp
%LINK-3-UPDOWN: Interface Bri0, changed state to down
%LINEPROTO-5-UPDOWN: Line protocol on Interface Bri0, changed state to down
R2(config-if)#ppp authentication chap
%LINK-3-UPDOWN: Interface Bri0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface Bri0, changed state to up
R2(config-if)#isdn spid1 32177820020100
R2(config-if)#dialer map ip 192.168.1.1 name R1 7782002
R2(config-if)#dialer
R2(config-if)#dialer-group 1
R2(config-if)#exit
R2(config)#dialer-list 1 protocol ip permit
R2(config)#
R2(config)#
R2(config)#int bri 0
R2(config-if)#dialer idle-timeout 180
R2(config-if)#end
R2#conf t
Enter configuration commands, one per line. End with CNTL/Z.
R2(config)#ip route 192.168.10.0 255.255.255.0 192.168.1.1
R2(config)#end
R2#copy run start
Destination filename [startup-config]?
Building configuration...
[OK]
