User`s manual

User's Manual
Arctic IEC-104 Gateway
Firmware Version 5.0.9 32 Document Version 1.5
5.2.7 Monitor
Monitor is used for GPRS and VPN connection checking. If connection to the
selected IP address is lost, the connection is restarted. Monitor uses ICMP
echo (ping) packets to check the connection. The monitor also keeps the
connection alive, so that idle timeout do not drop the connections.
ICMP Echo sending – Selects if the monitor is enabled.
This should be always enabled to correct IP.
Interval (sec) – Determines how often the connection is checked by sending
ICMP echo packets. The interval should be smaller than GPRS idle timeout
(typically max. 2/3 of GPRS idle timeout) in order to have uninterrupted
communication.
Reply timeout (secs) – The waiting time for reply packets.
Retries – The number of tries before connections are restarted.
Target IP address – The host IP address to which echo packets are sent to.
Secondary target IP address – The secondary host IP address to which
ICMP echo packets are to be sent if the sending to primary target host IP
address fails.
Figure 21. Monitor Settings
Note!
Monitor must be always enabled. When VPN is used, remote VPN peer IP
(or other IP reached only via VPN) must be used for connection checking