AN1332: Silicon Labs Wi-SUN Network Setup and Configuration

2021-08-23
●A Wi-SUN border router connects a Wi-SUN network to other IPbased networks, such as Ethernet®. A Wi-SUN network requires a border router to connect to other networks. The border router provides services for devices within the Wi-SUN network, including routing services for off-network operations. Silicon Labs provides a border router binary file and a Docker image allowing the connection to an external IP network. The goal is to allow the development of cloud-connected applications on the Wi-SUN router side.
The Wi-SUN border router with backhaul connectivity demonstration is delivered only in a binary format. The implementation does not scale for a production-grade border router maintaining several thousand Wi-SUN nodes.
●KEY POINTS
■Installation instructions for a Wi-SUN border router with backhaul connectivity
■Installation instructions for a Linux host running SLIP
■Steps to establish a connection between a Wi-SUN network and an external IP network
●In addition to managing Wi-SUN network mesh routing, a Wi-SUN border router is also in charge of providing a backhaul connection to Internet. Being constrained by the EFR32xG12 connectivity capabilities, the border router demonstration makes use of the SLIP protocol(Serial Line Internet Protocol) to open an IP backhaul connection.To move from the SLIP IP communication to native Ethernet packets, the demonstration needs a second device to run the SLIP protocol.As an accessible and well-spread Linux platform,the Raspberry Pi is used as a default platform for the demonstration(which can also run on a different Linux host).The demonstration communications and connections are described in the image below.
To simplify the deployment, all the software running on the Raspberry Pi is shared via a Docker container. Use of a network with IPv6 connectivity is encouraged. If IPv6 is not available, the Docker image will automatically switch to "local" mode. In local mode, the Dock-er image and the Wi-SUN nodes can reach themselves, but communication with the "outside world" is not possible.

Silicon Labs

EFR32xG12

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Part#

Wi-SUN border router

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Application note & Design Guide

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Please see the document for details

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2021/08/01

Rev. 0.2

AN1332

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