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Chapter 7. Optimizing the Use of DDR with Interface Dialer Profiles and Rotary Groups
This chapter covers the following topics:
The drawback of legacy dial-on-demand routing (DDR), as discussed in the preceding chapter, is that it cannot differentiate per user by specifying separate characteristics for various users. All calls made over the same physical interface must have the same configuration parameters. To sidestep this requirement, dialer profiles were created. They allow a user-specific profile to be configured on the router by separating the physical interface configurations from the logical configurations. Such profiles establish the characteristics of a particular user and then are dynamically allocated to the same interface for incoming or outgoing DDR calls.
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