holo

Holo is a suite of routing protocols designed to address the needs of modern networks

1. Install Nix

   Arch Linux

   Bash

   $ pacman --sync --refresh --noconfirm curl git jq nix

   Debian

   Bash

   $ apt install --yes curl git jq nix

   Ubuntu

   Bash

   $ apt install --yes curl git jq nix

2. Download a configuration file

   # default.nix
   {
     ngipkgs ? import (fetchTarball "https://github.com/ngi-nix/ngipkgs/tarball/main") { },
   }:
   ngipkgs.demo-vm (
     { ... }:
     {
       programs.holo.enable = true;
       services.holo-daemon.enable = true;
     }
   
   )
   

   Download
3. Enable binary substituters

   Bash

   $ export NIX_CONFIG='substituters = https://cache.nixos.org/ https://ngi.cachix.org/
   trusted-public-keys = cache.nixos.org-1:6nchdd59x431o0gwypbmraurkbj16zpmqfgspcdshjy= ngi.cachix.org-1:n+cal72roc3qqulxihpv+tw5t42whxmmhpragkrsrow='

4. Build and run a virtual machine

   Arch Linux, Debian Sid/Trixie and Ubuntu 25.04

   Bash

   $ nix-build ./default.nix && ./result

   Ubuntu 24.04/24.10

   Bash

   $ rev=$(nix-instantiate --eval --attr sources.nixpkgs.rev https://github.com/ngi-nix/ngipkgs/archive/master.tar.gz | jq --raw-output)

   $ nix-shell -I nixpkgs=https://github.com/NixOS/nixpkgs/archive/$rev.tar.gz --packages nix --run "nix-build ./default.nix && ./result"

5. Usage Instructions A demo VM for testing Holo. First, we need to execute `holo-cli` with previliges because it changes the IP table and the network configuration: $ sudo holo-cli This will start a holo shell, inside which you need to run the following to set up an ospf protocol: - configure - routing control-plane-protocols control-plane-protocol ietf-ospf:ospfv3 main - ospf preference inter-area 50 - show changes - commit - end - exit Finally, you can print and verify the routing configuration: $ holo-cli -c 'show running format json'

{ ... }:
{
  programs.holo.enable = true;
  services.holo-daemon.enable = true;
}

{ ... }:

{
  programs.holo.enable = true;
}

This project is funded by NLnet through these subgrants:

• HoloRouting