Dial-on-Demand Routing (DDR)
Dial-On-Demand Routing (DDR) is a technique whereby a router can automatically initiate and close a circuit-switched session as transmitting stations demand. The router spoofs keepalives so that end stations treat the session as active. DDR permits routing over ISDN or telephone
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Configuration
- Configuring ISDN Backup With Floating Static Routes
- Configuring AUX-to-AUX Port Async Backup with Dialer Watch
- Configuring Dialer Profiles to Bridge using ISDN
- Configuring a Router to Dial Multiple Sites using ISDN BRI
- Backup Bridging over ISDN
- BRI ISDN Backup With Backup Interface
- Configuring ISDN DDR with Dialer Profiles
- Configuring PPP Callback with RADIUS
- Configuring BRI-to-BRI Dialup with DDR Dialer Maps
- Dial-on-demand Routing (DDR) with Easy IP and DHCP Server
- Sample Configuration: Using Floating Static Routes and Dial-on-Demand Routing
- DDR Backup using BRIs and the Backup Interface Command
- Configuring Dialin and Dialout on the Same T1/E1 PRI Circuits
- Async Backup with Dialer Profiles
- Configuring BRI Backup Interface with Dialer Profiles
- AS5300 Dialing out with ISDN/Async (Outbound DDR)
- Configuring BRI ISDN Backup With Dialer Watch
- Configuring DDR Backup For ISDN With Dialer Profiles
- ISDN DDR Using HDLC Encapsulation
Configuration Examples and TechNotes
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Operation and Troubleshooting
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Floating static route
- Evaluating Backup Interfaces, Floating Static Routes, and Dialer Watch for DDR Backup
- Understanding and Troubleshooting Idle Timeouts
- Troubleshooting Dial Technology Connectivity - Non-DDR Callout
- Troubleshooting Dial Technology Connectivity - IOS DDR Initiates Call
- Problems with ISDN Overlap Receiving an Unallocated/Unassigned Number
- Configuring and Troubleshooting Dialer Profiles
- Dialup Technology: Troubleshooting Techniques
- Configuring and Troubleshooting DDR Backup
- Multilink PPP for DDR - Basic Configuration and Verification
- Dialup Technology: Overviews and Explanations
Troubleshooting TechNotes
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