152
[RouterA-ui-tty2] modem both
2. Configure Router B:
# Configure a dial access control rule for dialer access group 1.
<RouterB> system-view
[RouterB] dialer-rule 1 ip permit
# Configure interface Serial 2/0 to operate in asynchronous protocol mode.
[RouterB] interface serial 2/0
[RouterB-Serial2/0] physical-mode async
[RouterB-Serial2/0] async mode protocol
# Assign an IP address to interface Serial 2/0, associate dialer access group 1 with the interface,
enable C-DCC, and configure two dial strings for calling Router A.
[RouterB-Serial2/0] ip address 100.1.1.2 255.255.255.0
[RouterB-Serial2/0] dialer enable-circular
[RouterB-Serial2/0] dialer-group 1
[RouterB-Serial2/0] dialer route ip 100.1.1.1 8810048
[RouterB-Serial2/0] dialer route ip 100.1.1.1 8810049
[RouterB-Serial2/0] quit
# Enable modem dial-in and dial-out on the user interface to be used.
[RouterB] user-interface tty1
[RouterB-ui-tty1] modem both
3. Configure Router C:
# Configure a dial access control rule for dialer access group 1.
<RouterC> system-view
[RouterC] dialer-rule 1 ip permit
# Configure interface Serial 2/0 to operate in asynchronous protocol mode.
[RouterC] interface serial 2/0
[RouterC-Serial2/0] physical-mode async
[RouterC-Serial2/0] async mode protocol
# Assign an IP address to interface Serial 2/0, associate dialer access group 1 with the interface,
enable C-DCC, and configure two dial strings for calling Router A.
[RouterC-Serial2/0] ip address 100.1.1.3 255.255.255.0
[RouterC-Serial2/0] dialer enable-circular
[RouterC-Serial2/0] dialer-group 1
[RouterC-Serial2/0] dialer route ip 100.1.1.1 8810048
[RouterC-Serial2/0] dialer route ip 100.1.1.1 8810049
[RouterC-Serial2/0] quit
# Enable modem dial-in and dial-out on the user interface to be used.
[RouterC] user-interface tty1
[RouterC-ui-tty1] modem both
RS-DCC configuration example
Network requirements
As shown in Figure 48:
• On Router A, interface Dialer0 is assigned an IP address 100.1.1.1/24 and Dialer1 an IP
address 122.1.1.1/24.
• On Router B, interface Dialer0 is assigned an IP address 100.1.1.2/24.