NB3000-Line-Hd User Manual 4.2
Supervision
Network outage detection on a per-link basis can be performed by sending pings on each
link to some authoritative hosts. A link will be declared as down in case all trials have failed
and only as up if at least one host can be reached.
Figure 5.5.: Link Supervision
Parameter
Supervision Settings
Link
The WAN link to be monitored (can be ANY)
Mode
Specifies whether the link shall only be monitored if being up
(e.g. for using a VPN tunnel) or if connectivity shall be also
validated at connection establishment (default)
Primary host
The primary host to be monitored
Secondary host
The secondary host to be monitored (optional)
Ping timeout
The amount of time in milliseconds a response for a single
ping can take, consider to increase this value in case of slow
and tardy links (such as 2G connections)
Ping interval
The interval in seconds at which pings are transmitted on each
interface
45
