3Com 10014299 manual Router Dialer0

718CHAPTER 51: CONFIGURING DCC

Configuring Each RS-attribute set consists of a dialer interface, the attributes of the interface, Resource-Shared DCC and a dialer bundle. Specifically,

■Only one dialer number can be defined for a dialer interface. Since this dialer number has its own dial attributes set, all the calls originated by dialing this number can use the same DCC attribute parameters (such as dialing rate).

■Each dialer interface can use only one dialer bundle, which contains multiple physical interfaces of different priorities. However, each physical interface can be used by different dialer bundles. For an ISDN BRI or PRI interface, the user can set the number of B channels that will be used through setting dialer bundles.

■All the calls aimed to the same destination segment use the same RS-DCC set.

Due to the separation between logical and physical interface configurations, resource-shared DCC are applicable for more network topologies and DCC dialing requirements, especially for the situation in which multiple interface groups originate calls to multiple remote interfaces.

Figure 232 Multiple interfaces placing calls to multiple remote ends in the

Resource-Shared DCC implementation

	Physical interface	if1
	groups			Remote end A
	Local end			Single/Multiple interface(s)
	(multiple interfaces)
Call			Router
	Dialer0
Remote end A		if2		Remote end B
Call	Dialer1
				Single/Multiple interface(s)
Remote end B	Router		if3 Router
Call
	Dialer2			Remote end C
Remote end C
				Single/Multiple interface(s)
			Router

As shown in Figure 232, different dialer interfaces are used for placing calls to different remote ends. (That is, one dialer interface only corresponds to one remote end.) Through adding a physical interface to the bundle of some dialer interfaces, the interface can originate calls as needed.

When configure resource-shared DCC based on RS-attribute set, a physical interface only needs to be configured with the link layer protocol and the number of the dialer bundle to which the physical interface belongs.

When configuring resource-shared DCC based on RS-attribute set, a RS-attribute set is unable to apply its attributes to the physical interfaces in a dialer bundle. (For example, it is unable to apply PPP authentication to the physical interfaces). In other words, the physical interfaces do not inherit the authentication attribute of the RS-attribute set. Therefore, authentication of the related information must be configured on the physical interfaces at the receiving end.

Resource-Shared DCC configuration includes:

■Enabing Resource-Shared DCC

■Configuring the dialer interface and dialer number

■Creating dialer bundle and assigning physical interfaces to it