Mesh networking on OpenWRT 15.05 with OLSR

DOCUMENT UNDER CONSTRUCTION.

Preliminaries

Software

OpenWRT 15.05 Chaos Calmer is installed with defaults. Target device as 8Mb Flash Memory Minimum.

Hardware

Note concerning the WR703N router. This must be modified with upgraded flash memory. The default unit does not have sufficient memory.

This will work on EmonWRT3 and ModWRT devices.

Setup a Node

This is for setting up a simple node that has no access to the outside but can connect to other nodes. Most unit in the network will have this configuration.

We will use here

• Wired - Static IP 192.168.2.1 (for configuration access only)
• Wifi - Ad-hoc wifi with Static IP 10.10.10.xx (for comms with other nodes).

-1-

First of all make sure the wired interface LAN is setup with static IP address. For our example we will use 192.168.2.1 (if you opt for another ip address then avoid the internet access subnet - like 192.168.1.0 for home routers.)

Make sure the interface is not bridging the wifi.

• In Network | Interfaces click on Edit on the LAN interfaces. Then in Physical Settings untick create a bridge over specified interface(s).
• Make sure Ethernet Adapter: "et0" (lan) is ticked on.

You should now configure this unit by connecting a computer directly to this node with an ethernet cable.

The Lan interface should look like this below.