R0106-HP MSR Router Series Layer 2 - WAN Configuration Guide(V7)

198
Figure 61 Network diagram for dial string backup/access service (ISDN mode)
Configuration procedure for PSTN mode
On Router A on the dialup side, configure circular dial string backup.
On Router B, do the following:
• Configure traditional DDR to allow the router to establish connections on eight asynchronous serial
interfaces.
• Configure traditional DDR parameters on a dialer interface.
1. Configure Router A:
# Create dialer group 1 and configure a dial rule for it.
<RouterA> system-view
[RouterA] dialer-group 1 rule ip permit
# Create a local user userb for authenticating Router B, and configure the service type as PPP.
[RouterA] local-user userb class network
[RouterA-luser-network-userb] password simple userb
[RouterA-luser-network-userb] service-type ppp
[RouterA-luser-network-userb] quit
# Configure Serial 2/1/0 to operate as an asynchronous interface in protocol mode.
[RouterA] interface serial 2/1/0
[RouterA-Serial2/1/0] physical-mode async
[RouterA-Serial2/1/0] async-mode protocol
# Enable PPP address negotiation on the interface.
[RouterA-Serial2/1/0] ip address ppp-negotiate
# Enable PPP encapsulation on the interface.
[RouterA-Serial2/1/0] link-protocol ppp
# Configure PAP authentication on the interface.
[RouterA-Serial2/1/0] ppp authentication-mode pap
[RouterA-Serial2/1/0] ppp pap local-user user1 password simple user1
# Enable traditional DDR on the interface.
[RouterA-Serial2/1/0] dialer circular enable
# Associate the interface with dialer group 1.
[RouterA-Serial2/1/0] dialer-group 1
# Configure the dial strings for calling Router B.
ISDN
Router D
Router C
NT 1
NT 1
S2/3/0:15
100.1.1.254/24
BRI2/4/0
Internet
8810048
...