User Manual - Configuration Guide (Volume 3)
Versatile Routing Platform Chapter 1
DDR Configuration
1-21
1.6 DDR Typical Configuration Example

1.6.1 Legacy DDR

I. Network requirements

In the following diagram, the local router XXX and the remote routers YYY and ZZZ are
connected through DDR. Remote routers YYY and ZZZ can call the local router XXX,
while XXX can only call YYY, not ZZZ.
II. Networking diagram
Figure DC-1-4 Schematic diagram of a Legacy DDR configuration
III. Configuration procedure
! Create a dial interface
Quidway (config)# interface dialer 1
! Configure IP address of the dial interface
Quidway (config-if-Dialer1)# ip address 131.108.2.1 255.255.255.0
Quidway (config-if-Dialer1)# ip address 131.126.4.1 255.255.255.0 second ary
! Configure encapsulation PPP of the dial interface and CHAP authenticati on
Quidway (config-if-Dialer1)# encapsulation ppp
Quidway (config-if-Dialer1)# ppp authentication chap
! Configure domain name XXX of the local router
Quidway (config-if-Dialer1)# ppp chap host XXX (this name is the same as the user
name when the remote router configuration authenticates the local end. This will not be
explained further in later examples).
! Configure password xxxsystem when the local router is authenticated by the remote
router