Proroute
GEM
2M
4G
Router
GEM-2M series User Manual
38
choose this scheme if for mission critical applications to ensure Internet
connection is available all the time. If choosing “Dial-on-demand”, this gateway
won’t start to establish Internet connection until local data is going to be sent to
WAN side. During normal operation, this gateway will disconnect WAN
connection if idle time reaches the value of "Maximum Idle Time". If choosing
“Connect Manually”, this gateway won’t start to establish WAN connection until
you press “Connect” button on web UI. During normal operation, this gateway
will disconnect WAN connection if idle time reaches the value of "Maximum Idle
Time".
2.
Time Schedule
: This option allows you to limit WAN connection available in a
certain time period. You can select
“Always”
option or a time schedule object
from the schedule object list that you can find them in
[System]-[Scheduling]
.
3.
MTU
: MTU refers to "Maximum Transmit Unit". Different WAN types of
connection will have different value. You can leave it with 0 (Auto) if you are not
sure about this setting.
4.
NAT:
By default, it is enabled. If you disable this option, there will be no NAT
mechanism between LAN side and WAN side.
5.
Network Monitoring:
You can do preferred settings by using this feature to
monitor the connection status of WAN interface. Checking mechanism depends
on several parameters defined here. The network monitoring provides the WAN
interface status and then system can prevent embedded 3G/LTE modem from
some sort of auto-timeout and disconnects from the Internet after a period of
inactivity.
Enable:
Check the box to do Network Monitoring. By default, it is checked.
DNS Query/ICMP Checking
: Do the keep alive through DNS query packets or
ICMP packets.
Loading Checking
: The response time of replied keep-alive packets may
increase when WAN bandwidth is fully occupied. To avoid keep-alive feature
work abnormally, enable this option will stop sending keep-alive packets when
there are continuous incoming and outgoing data packets passing through WAN
connection. By default, the Loading Checking is enabled.
Check Interval
: Indicate how often to send keep-alive packet.
Check Timeout
: Set allowance of time period to receive response of keep-alive
packet. If this gateway doesn’t receive response within this time period, this
