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associated with multiple destinations, any physical interface in the group can call any of these
destinations.
Depending on your network topology and dial needs, for example, to allow one or multiple interfaces
to both place and receive calls, you can use any combinations of the following C-DCC configuration
approaches:
• Configuring an interface to place calls to a remote end
• Configuring an interface to receive calls from a remote end
• Configuring an interface to place call
s to multiple remote ends
• Configuring an interface to receive calls from multiple remote ends
• Configuring multiple interfaces to place calls to one or multiple remote ends
• Configuring multiple interfaces to receive calls from one or multiple remote ends
In the C-DCC implem
entation of DCC, the two dial parties can configure the PAP or CHAP
authentication. Hewlett Packard Enterprise recommends that you configure authentication to ensure
security of dialing IDs. For more information about configuring authentication, see "Configuring PPP
and MP." When you do that, follow these guidelines:
• If one party has configured authentication, the other party must do that as well.
• At the sending side, if DCC is enabled on physical interfaces, directly configure PAP or CHAP
authentication on the physical interfaces. If DCC is enabled on a dialer circular group, configure
PAP or CHAP authentication on the dialer interface corresponding to the dialer circular group.
• At the receiving end, make the configuration on both physical and dialer interfaces, because
after a physical interface receives a call, it negotiates PPP and authenticates the dialer prior to
handing over the call to the upper layer DCC module.
Configuring an interface to place calls to a remote end
In Figure 40, an interface at the local end places calls to a single remote end (the components in
inverse color represent the routers irrelevant to the networking).
Figure 40 Network diagram
In this scenario, for interface if0 to place DCC calls to a single remote interface if1, you can configure
a dial string with the dialer number or dialer route command. As calls are to be placed from a single
interface, you can configure DCC by configuring a dialer circular group. In addition, you can
configure PAP or CHAP authentication.
To configure an interface to place calls to a remote end:
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