HPE FlexNetwork MSR series Configuration Manual page 217

Figure 65 Network diagram for dial string backup/Internet access service (ISDN mode)
Router C
Bri2/4/0
......
Configuration procedure for PSTN mode
On Router A on the dialup side, configure circular dial string backup.
On Router B, perform the following tasks:
•
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 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.
[RouterA-Serial2/1/0] dialer route ip 100.1.1.254 8810048
[RouterA-Serial2/1/0] dialer route ip 100.1.1.254 8810049
NT 1
ISDN
NT 1
Ser2/3/0:15
Router D
100.1.1.254/24
8810048
208
Internet