Understanding Dialer Watch

Dialer watch is a dial-on-demand routing (DDR) backup feature that provides reliable connectivity without relying on a dialer filter to activate the ISDN interface. The ISDN dialer interface monitors the existence of each route on a watch list. If all routes on the watch list are lost from the routing table, dialer watch initiates the ISDN interface for failover connectivity.

Configure dialer watch options for each ISDN interface participating in the dialer watch feature. Each ISDN interface must have the same pool identifier to participate in dialer watch.

Related Topics

• Junos OS Feature Support Reference for SRX Series and J Series Devices