Cisco IOS in a Nutshell, 2nd Edition

Name

ip ospf demand-circuit — interface

Synopsis

ip ospf demand-circuit
no ip ospf demand-circuit

Configures

Dial-on-demand behavior

Default

Disabled

Description

This command tells OSPF that this interface is a demand circuit (i.e., an interface configured for dial-on-demand routing). OSPF will suppress verbose traffic (such as periodic hello packets), thus preventing the circuit from being kept up all the time.

Example

This example configures an ISDN interface as a DDR link for OSPF:

interface bri0
  ip address 10.12.1.5 255.255.255.0
  encapsulation ppp
  ip ospf demand-circuit