Configuration example for DCC on ISDN
Network requirements
Figure 49 presents a scenario for C-DCC implementation, where:
On Router A, interface BRI 1/0 is assigned an IP address 100.1.1.1/24.
On Router B, interface BRI 1/0 is assigned an IP address 100.1.1.2/24.
On Router C, interface BRI 1/0 is assigned an IP address 100.1.1.3/24.
The BRI 1/0 interfaces on these three routers are located on the same network segment.
Figure 50 presents a scenario for RS-DCC implementation, where:
On Router A, interface Dialer 0 is assigned an IP address 100.1.1.1/24 and Dialer 1 an IP address 122.1.1.1/24.
On Router B, interface Dialer 0 is assigned an IP address 100.1.1.2/24.
On Router C, interface Dialer 0 is assigned an IP address 122.1.1.2/24.
The Dialer 0 interfaces on Router A and Router B are located on the same network segment, so are the Dialer 1 interface on Router A and the Dialer 0 interface on Router C.
Allow Router A to call Router B and Router C from multiple interfaces, but disable Router B and Router C from calling each other in both C-DCC and RS-DCC approaches.
Figure 49: Network diagram for C-DCC application on ISDN
Figure 50: Network diagram for RS-DCC application on ISDN
Configuration procedure
Method 1: Use C-DCC to set up a connection through ISDN BRI or PRI and configure DCC parameters on physical interfaces.
Configure Router A:
# Configure a dial access control rule for dialer access group 1.
<RouterA> system-view [RouterA] dialer-rule 1 ip permit
# Assign an IP address to interface BRI 1/0, enable C-DCC, and configure the dial strings for calling Router B and Router C.
[RouterA] interface bri 1/0 [RouterA-Bri1/0] ip address 100.1.1.1 255.255.255.0 [RouterA-Bri1/0] dialer enable-circular [RouterA-Bri1/0] dialer-group 1 [RouterA-Bri1/0] dialer route ip 100.1.1.2 8810052 [RouterA-Bri1/0] dialer route ip 100.1.1.3 8810063
Configure Router B:
# Configure a dial access control rule for dialer access group 2.
<RouterB> system-view [RouterB] dialer-rule 2 ip permit
# Assign an IP address to interface BRI 1/0, enable C-DCC, and configure the dial string for calling Router A.
[RouterB] interface bri 1/0 [RouterB-Bri1/0] ip address 100.1.1.2 255.255.255.0 [RouterB-Bri1/0] dialer enable-circular [RouterB-Bri1/0] dialer-group 2 [RouterB-Bri1/0] dialer route ip 100.1.1.1 8810048
Configure Router C:
# Configure a dial access control rule for dialer access group 1.
<RouterC> system-view [RouterC] dialer-rule 1 ip permit
# Assign an IP address to interface BRI 1/0, enable C-DCC, and configure the dial string for calling Router A.
[RouterC] interface bri 1/0 [RouterC-Bri1/0] ip address 100.1.1.3 255.255.255.0 [RouterC-Bri1/0] dialer enable-circular [RouterC-Bri1/0] dialer-group 1 [RouterC-Bri1/0] dialer route ip 100.1.1.1 8810048
Method 2: Use RS-DCC to set up a connection through ISDN BRI or PRI and configure DCC parameters on dialer interfaces.
Configure Router A:
# Configure a dial access control rule for dialer access group 1. Create local user accounts userb and userc for Router B and Router C, and configure PPP authentication for them.
<RouterA> system-view [RouterA] dialer-rule 1 ip permit [RouterA] local-user userb [RouterA-luser-userb] password simple userb [RouterA-luser-userb] service-type ppp [RouterA-luser-userb] quit [RouterA] local-user userc [RouterA-luser-userc] password simple userc [RouterA-luser-userc] service-type ppp [RouterA-luser-userc] quit
# Assign an IP address to interface Dialer0, enable RS-DCC, and configure the remote username allowed to call in.
[RouterA] interface dialer 0 [RouterA-Dialer0] ip address 100.1.1.1 255.255.255.0 [RouterA-Dialer0] dialer user userb [RouterA-Dialer0] dialer bundle 1
# Configure information for PPP authentication and the dial strings on interface Dialer0.
[RouterA-Dialer0] dialer-group 1 [RouterA-Dialer0] ppp authentication-mode pap [RouterA-Dialer0] ppp pap local-user usera password simple usera [RouterA-Dialer0] dialer number 8810052 [RouterA-Dialer0] quit
# Assign an IP address to interface Dialer1, enable RS-DCC, and configure the remote username allowed to call in.
[RouterA] interface dialer 1 [RouterA-Dialer1] ip address 122.1.1.1 255.255.255.0 [RouterA-Dialer1] dialer user userc [RouterA-Dialer1] dialer bundle 2
# Configure information for PPP authentication and the dial strings on interface Dialer1.
[RouterA-Dialer1] dialer-group 1 [RouterA-Dialer1] ppp authentication-mode pap [RouterA-Dialer1] ppp pap local-user usera password simple usera [RouterA-Dialer1] dialer number 8810063 [RouterA-Dialer1] quit
# Configure information for PPP authentication on interface BRI 1/0 and assign the interface to dialer bundle 1 and dialer bundle 2.
[RouterA] interface bri 1/0 [RouterA-Bri1/0] dialer bundle-member 1 [RouterA-Bri1/0] dialer bundle-member 2 [RouterA-Bri1/0] link-protocol ppp [RouterA-Bri1/0] ppp authentication-mode pap [RouterA-Bri1/0] ppp pap local-user usera password simple usera
Configure Router B:
# Configure a dial access control rule for dialer access group 2. Create a local user account usera for Router A, and configure PPP authentication for it.
<RouterB> system-view [RouterB] dialer-rule 2 ip permit [RouterB] local-user usera [RouterB-luser-usera] password simple usera [RouterB-luser-usera] service-type ppp [RouterB-luser-usera] quit
# Assign an IP address to interface Dialer0, enable RS-DCC, and configure the remote username allowed to call in.
[RouterB] interface dialer 0 [RouterB-Dialer0] ip address 100.1.1.2 255.255.255.0 [RouterB-Dialer0] dialer user usera [RouterB-Dialer0] dialer bundle 1
# Configure information for PPP authentication and the dial string on interface Dialer0.
[RouterB-Dialer0] dialer-group 2 [RouterB-Dialer0] ppp authentication-mode pap [RouterB-Dialer0] dialer number 8810048 [RouterB-Dialer0] ppp pap local-user userb password simple userb [RouterB-Dialer0] quit
# Configure PPP authentication on interface BRI 1/0 and assign it to dialer bundle 1.
[RouterB] interface bri 1/0 [RouterB-Bri1/0] dialer bundle-member 1 [RouterB-Bri1/0] link-protocol ppp [RouterB-Bri1/0] ppp authentication-mode pap [RouterB-Bri1/0] ppp pap local-user usera password simple usera
Configure Router C:
# Configure a dial access control rule for dialer access group 2. Create a local user account usera for Router A and configure PPP authentication for it.
<RouterC> system-view [RouterC] dialer-rule 1 ip permit [RouterC] local-user usera [RouterC-luser-usera] password simple usera [RouterC-luser-usera] service-type ppp [RouterC-luser-usera] quit
# Assign an IP address to interface Dialer0, enable RS-DCC, and configure the remote username allowed to call in.
[RouterC] interface dialer 0 [RouterC-Dialer0] ip address 122.1.1.2 255.255.255.0 [RouterC-Dialer0] dialer user usera [RouterC-Dialer0] dialer bundle 1
# Configure information for PPP authentication and the dial strings on interface Dialer0.
[RouterC-Dialer0] dialer-group 1 [RouterC-Dialer0] dialer number 8810048 [RouterC-Dialer0] ppp authentication-mode pap [RouterC-Dialer0] ppp pap local-user userc password simple userc [RouterC-Dialer0] quit
# Configure information for PPP authentication on interface BRI 1/0 and assign the interface to dialer bundle 1.
[RouterC] interface bri 1/0 [RouterC-Bri1/0] dialer bundle-member 1 [RouterC-Bri1/0] link-protocol ppp [RouterC-Bri1/0] ppp authentication-mode pap [RouterC-Bri1/0] ppp pap local-user usera password simple usera