User's Manual

EnRoute50x/51x User’s Guide

TR0153 Rev. D2

11 Connecting an EnRoute500 Gateway to a WAN

The options for connecting an EnRoute500 gateway to a WAN are described below.

11.1 Manual Configuration

An EnRoute500 gateway can be directly connected to a WAN without using Network Address

Translation. With this gateway configuration, the router on the network that the gateway is

attached to must be configured to forward the mesh subnet and the LAN subnets to the

gateway‟s Ethernet IP address. The subnets that need to be forwarded are:

Class B subnet: <LAN prefix>.<Mesh ID>.0.0

Class C subnet: <Mesh prefix >.<Mesh ID>.0

In the case where the LAN prefix is 10, the mesh ID is 2, and the mesh prefix is 172.29, the

subnets the router would need to forward to the gateway are 10.2.0.0/255.255.0.0 and

172.29.2.0/255.255.255.0.

CLI

The subnet information can be retrieved from the „sys‟ interface as shown below.

> use sys

sys> get id.*

sys.id.lanprefix = 10

sys.id.mesh = 2

sys.id.meshprefix = 172.29

sys.id.node = 4

Web GUI

The LAN prefix and mesh prefix can be obtained by inspecting the IP addresses available on

the “Status” page. Alternatively, the mesh ID can be obtained from the “Mesh” tab on the

“Wireless Interfaces” page and the LAN prefix can be obtained form the “System” tab on the

“System” page.

11.2 Network Address Translation (NAT)

Network Address Translation (NAT) isolates a mesh cluster from the WAN network that its

gateway is connected to. The mesh nodes and their client devices are able to communicate

with devices connected to the external network that the mesh gateway is connected to.