Once established, a small subnet containing the cellular IP is created, by default the netmask is
255.255.255.248. This small subnet consists of a network and broadcast address as a regular subnet.
In some situations it may lead to unreachability of several remote hosts due to IP address overlapping.
If this is the case, user can manually configure the APN network, e.g. 10.203.0.0/255.255.128.0.
In any case, the M!DGE unit is reachable via the default gateway automatically obtained from M!DGE
by DHCP. The gateway IP address is set as the first available IP address after the specified APN address
range. If not specified, it is the first usable IP within the /29 subnet.
Note
We recommend to define the APN network/netmask manually. There might be situations in
which the default /29 disables the communication. E.g. WWAN IP is 10.10.10.6. The connected
device obtaines this IP via DHCP and sets the default gateway to 10.10.10.7 - but this IP is a
broadcast IP within /29 subnet and the communication is not possible. If you configure subnet
10.10.10.0/29 manually, a default gateway would be 10.10.10.8 in newly created local /28
subnet.
Example: If the APN network is 10.203.0.0/17, the default gateway is set to 10.203.128.0. The web
interface is reachable via this IP address over the selected LAN interface. The connected device's
network mask is /16 (1 bit wider), otherwise the default gateway would not be usable.
Note
This option is configurable within WWAN links only. Remember that LAN1 cannot be used
as the port for the IP passthrough functionality.
•
• LAN10 is not usable within M!DGE routers. Do not select it.
M!DGE2 GPRS/UMTS/HSPA+/LTE router – © RACOM s.r.o.
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Web Configuration
Summary of Contents for M!DGE2
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