3Com 10014299 manual Configuring an interface to originate calls to a remote end

712CHAPTER 51: CONFIGURING DCC

Assure that the commands dialer rule dialer-groupand dialer-groupdialer-groupadopt the same dialer-group.

Do not concurrently configure the functional arguments of the protocol-name and acl-number for the same dialer rule command when configuring a dialer ACL.

Configuring Circular DCC If Circular DCC is used, each physical interface can either be directly configured with the DCC parameters, or bound to a dialer interface to inherit the DCC parameters through a dialer circular group. Between these two options, configuring the DCC parameters directly on a physical interface is only applicable for a single interface to originate calls to one or more remote ends. However, a dialer circular group is also applicable for multiple interfaces to originate calls to one or more remote ends in addition to that.

Dialer circular group associates a dialer interface with a group of physical interfaces. The DCC configuration of this dialer interface are automatically inherited by all the physical interfaces in the dialer circular group. After configuring the parameters for the dialer circular group, any physical interface in the group can call any predefined destination if the dialer interface is associated with multiple destinations.

Depending on the network topology and DCC dialing demands, such as one interface or multiple interfaces can both originate and receive calls, the user can flexibly use one configuration or the combination of several configurations in the Circular DCC configurations introduced below.

In the circular DCC implementation of DCC, the two dial parties can configure Password Authentication Protocol (PAP) or Challenge-Handshake Authentication Protocol (CHAP) authentication. However, the other party must configure authentication if one party has done that. For security of the dialing ID, you should configure authentication in actual networking applications. For configuration methods, see the section in Operation Manual - Link Layer Protocol and note the following items at the same time:

■At the sending side, if DCC is directly enabled on the physical interface, directly configure PAP or CHAP authentication on the physical interface. If DCC is enabled through a dialer circular group, configure PAP or CHAP authentication on the dialer interface.

■When configuring PAP or CHAP authentication at the receiving end, the user is recommended to make the configuration on both physical and dialer interfaces. That is because the physical interface will first implement PPP negotiation and authenticate the validity of the dialing user when receiving a DCC call request, and then deliver the call to the upper layer DCC module for processing.

Configuring an interface to originate calls to a remote end

Perform the following configuration steps after the basic DCC configuration is completed. As shown in Figure 226, a local interface originates a call to a single remote end.