User Manual - Configuration Guide (Volume 3)
Versatile Routing Platform
Chapter 1
DDR Configuration
1-57
Quidway(config-if-Serial2:15)# peer default ip address pool 1
Quidway(config-if-Serial2:15)# dialer-group 1
Quidway(config-if-Serial2:15)# encapsulation ppp
Quidway(config-if-Serial2:15)# ppp authentication chap
1.6.13 DDR for Inter-Router Callback
I. Networking requirements
We have designed two implementation solutions: “use ISDN calling line identification
callback” and “Use PPP callback”. In the implementation solution “use ISDN calling line
identification callback”, routers at both ends need to use ISDN interface for
interconnection. In the following configuration procedure, Bri 0 is used to identify ISDN
interface, router A is used as callback Server end and router B as callback Client end.
“ISDN calling line identification callback” and “PPP callback” can be used in
combination, and users can simply combine the configuration procedures of the two
listed below:
II. Networking diagram
Router A
PSTN
Modem
Router B
Modem
8810052
Networking diagram of
PPP callback
8810048
Router A
ISDN
Router B
8810152
8810148
Networking diagram of ISDN
caller identifying callback
Figure DC-1-16 Networking diagram of inter-router callback DDR configuration example
III. Configuration procedure
Solution 1: use ISDN calling line identification callback
1) Configure router A:
Quidway(config)# dialer-list 1 protocol ip permit
Quidway(config)# interface bri 0
Quidway(config-if-Bri0)# ip address 100.1.1.1 255.255.255.0
Quidway(config-if-Bri0)# dialer-group 1
Quidway(config-if-Bri0)# dialer map ip 100.1.1.2 8810152