Proroute GEM420 4G M2M Router
GEM420 User Manual
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6.
NAT:
By default, it is enabled. If you disable this option, there will be no NAT
mechanism between LAN side and WAN side.
7.
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.
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.
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 gateway will record this keep alive is failed.
Latency Threshold
: Set acceptance of response time. This gateway will
record this keep-alive check is failed if the response time of replied packet is
longer than this setting.
Fail Threshold
: Times of failed checking. This WAN connection will be
recognized as broken if the times of continuous failed keep-alive checking
equals to this value.
Target1/Target2
: Set host that is used for keep alive checking. It can be
DNS1, DNS2, default Gateway, or other host that you need to input IP
address manually.
8.
IGMP:
Enable or disable multicast traffics from Internet. You may enable as
auto mode or select by IGMP v1, IGMP v2, IGMP v3 or Auto.
9.
WAN IP Alias:
In some cases, ISP will provide you another fixed IP address
for management purpose. You can enter that IP address in this field.
