Global Dns - Sierra Wireless AirLink RV50 Series User Manual

ALEOS 4.9.0 Software Configuration User Guide for AirLink RV50 Series
Field
Primary Gateway
Host Network 2 and
Host Network 3
Host Network Subnet
Mask 2 and Host
Network Subnet Mask 3
Host Network 2 Route
and Host Network 3
Route
Host Network 2
Gateway and Host
Network 3 Gateway
Rev 1 Dec. 17
Description
When enabled, your AirLink gateway is the primary gateway for connected LANs and
responds to Address Resolution Protocol (ARP) requests to resolve WAN addresses for
devices on the connected LANs. Default is Enabled.
Enter the IP address for Host Network 2 and 3. These are LAN networks connected to
the AirLink gateway behind a router or gateway. They do not have the same IP range as
the AirLink gateway LAN network. For example, 192.168.10.0.
The subnet for the applicable network. For example, 255.255.255.0, which would with
the setting above define a secondary network of 192.168.10.0/24.
Choose the appropriate option, depending on how ARP requests are handled on the
network. Options are:
Ethernet— Select this option if the network uses a router that acts as an ARP proxy
•
for addresses on subnets connected to it. For example, in
when traffic is destined for host 192.168.10.100 in network 2, the AirLink gateway
sends an ARP request for 192.168.10.100.
Note: If proxy ARP is not enabled on the router, the transmission fails (destination
unreachable).
Gateway—Select this option if the network uses a device that does not handle ARP
•
requests for network devices attached to it. When Gateway is selected, ALEOS
handles ARP requests for the connected LAN devices. Any traffic destined for a
host on the network behind a gateway is routed, by the device, through the gateway
IP. For example, in Figure 5-9
192.168.20.100 in network 3, the AirLink gateway sends an ARP request for the
gateway (192.168.13.20), not the host.
When you select Gateway, proxy ARP is not required on the router.
If you selected Gateway in the Host Network Route field, enter the IP address for
•
the gateway.
If you selected Ethernet in the Host Network Route field, leave this field as 0.0.0.0.
•

Global DNS

When the mobile network grants the IP address to the device, it includes the IP
addresses of its DNS servers. Global DNS allows you to override the Mobile
Network Operator's DNS settings for all connected devices. This is useful when
the connected devices need to use a private network.
Note: If there are no alternate DNS servers defined, the default is the WAN network DNS
server.
122
on page 121, when traffic is destined for host
Figure 5-9 on page 121,
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