Draytek Vigor2860 User Manual page 110

Available settings are explained as follows:
Item
Enable / Disable
Keep WAN Connection
WAN Connection
Detection
96
Description
Click Enable for activating this function. If you click Disable,
this function will be closed and all the settings that you
adjusted in this page will be invalid.
Normally, this function is designed for Dynamic IP
environments because some ISPs will drop connections if
there is no traffic within certain periods of time. Check
Enable PING to keep alive box to activate this function.
PING to the IP - If you enable the PING function, please
specify the IP address for the system to PING it for keeping
alive.
PING Interval - Enter the interval for the system to execute
the PING operation.
Such function allows you to verify whether network
connection is alive or not through ARP Detect or Ping Detect.
Mode – Choose ARP Detect, Ping Detect or Always On for
the system to execute for WAN detection. If you choose Ping
Detect as the detection mode, you have to type required
settings for the following items.

Primary/Secondary Ping IP – If you choose Ping Detect as
Vigor2860 Series User's Guide