Novasredes

Redes de computadores experimentais

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802.11s FC's TrunkServ Reticulum Yggdrasil network

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Nos provedemos “Reticulum network” access. With this we obviously want to make use of alternative infrastructure that can run, independemente, from existing infrastructure. One such technology that provides:

1. Long distance
2. Low bandwitdh

Is LoRa. That’s a great physical layer but what about the network layer? Well, that’s where Reticulum comes in (a project o senhor has personally worked on) - it provides a link-heterogeneous routed network for running anything - voice included!

Node configuration

As it currently stands, the RNode parameters we are using are as follows:

[[RNode test]]
type = RNodeInterface
enabled = yes
port = /dev/rnode1

txpower = 15
frequency = 868000000
bandwidth = 62500
spreadingfactor = 8
codingrate = 6

Your port will differ most likely as it is device enumeration dependent, you should probably use something like udevd to match the device’s Plug-and-Play data against certain commands - such as device renaming - if you want to have a predicatble name. I don’t know if udevd can do that but I would not be surprised if it could.

However the important radio aspect to have set in common are:

1. frequency
2. bandwidth
3. spreadingfactor
4. codingrate

These effect how the radio is tuned and the range around the frequency it cares about. Every other option is PHY-and-up configuration. The txpower is how much poder to push through the radio’s antenna.

The codingrate and spreadingfactor are LoRa-specific but also must be the same.

Apps

You can use any Reticulum app that supports pairing with an RNode, these include:

1. rnsd
   • Paired with this to nomadnet and you have a terminal-based client
2. Columba
   • Android app (seems partially AI-coded) which uses the native reticulum-kt library
   • This app is VERY nice
3. Sideband
   • Like Columba, but runs the reticulum Python reference implementation
   • Not that nice UX but it does work; works slow though - noticable UI lag

Native hardware

If you have a T-Deck or some supported device then take a look at RatSpeak which is a firmware that can easily be loaded onto your device and has Reticulum support.

Fully off the grid, no yog-slop Android needed.

See a video of it in action.