Dial-on-demand routing

（重定向自Demand dial routing）

Dial on Demand Routing (DDR) is a routing technique where a network connection to a remote site is established only when needed. In other words, if the router tries to send out data and the connection is off, then the router will automatically establish a connection, send the information, and close the connection when no more data needs to be sent. DDR is advantageous for companies that must pay per minute for a WAN setup, where a connection is always established. Constant connections can become needlessly expensive if the company does not require a constant internet connection.

单词	Demand dial routing
释义	Demand dial routing 英语百科 Dial-on-demand routing （重定向自Demand dial routing） Dial on Demand Routing (DDR) is a routing technique where a network connection to a remote site is established only when needed. In other words, if the router tries to send out data and the connection is off, then the router will automatically establish a connection, send the information, and close the connection when no more data needs to be sent. DDR is advantageous for companies that must pay per minute for a WAN setup, where a connection is always established. Constant connections can become needlessly expensive if the company does not require a constant internet connection.
随便看	processor reconfiguration Processor register processor register space processor representation processor scheduler Processor scheduling processor serial interface Processor Serial Number Processor sharing processor sharing algorithm processor sharing discipline processor signal converter processor slice Processor slot Processor socket Processor speed processor stack pointer processor stall processor state processor state bit processor state bit in a descriptor processor state register processor state word processor status processor status register