Draytek Vigor2960 Series User Manual page 305

DPD Delay
DPD Timeout
5. Fill in the required information on this page and click Finish. Later, a new profile has
been created.
Vigor2960 Series User's Guide
DPD means dead peer detection. It is a keep-alive timer. A
Hello message will be emitted periodically when a tunnel is
idle. Use the value 0 to disable this function. The
recommended value is 30 seconds if enabled.
It is the timeout timer. The peer will be declared dead once
no acknowledge message is received after timeout value.
Use the value 0 to disable this function. The recommended
value is 120 seconds if enabled.
297