Dial-on-Demand Routing

What is Dial-on-Demand Routing (DDR)?

What does DDR stand for?

itMyt Explains Dial-on-Demand Routing:

Dial-on-Demand Routing (DDR) is a Cisco routing approach that iNitiates and closes Circuit-Switched statistics Classes on an automated and as-wanted foundation.

DDR uses external Terminal Adapters that permit huge area Network (WAN) routing connections thru Public Switched Telephone Networks (PSTN) or Integrated Services Digital Networks (ISDN).

What Does Dial-on-Demand Routing Mean?

DDR allows faraway WAN facts connections that automatically terminate after transmission interest ends. DDR is used with primary and Backup connections.

DDR connectivity is established in both of the following Methods:

Physical: A cable connects the PSTN to the Computer’s commUnity Interface card (NIC) for person conversation. Digital: Point-to-Point Protocol (PPP) determines a connection common sense for community sign Characteristic management (sending, receiving, compression).

DDR affords a number Configuration Commands, inclusive of:

Phone agencies set up connection switch kinds and local excHange termination factors. Configuration depends on site visitors setup triggers unique with the aid of general or prolonged interface dialer get admission to lists (like thrilling site visitors).

Static Routing remains Constant to facilitate neighborhood and far off bidirectional reachability. During ISDN set up, PPP or High-Level Data Link Control (HDLC) allows Encapsulation.

After encapsulation, the Host cope with implements IP addressing this is tough Coded at some point of worldwide configuration or extracted from the local location network (LAN) interface address with the bottom wide Variety.

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