photoncloud-monorepo/nix-nos/examples/datacenter-node.nix

# Data center node configuration
# Demonstrates BGP routing and VLAN segmentation

{ config, pkgs, ... }:

{
  imports = [ ../modules ];

  # Enable Nix-NOS
  nix-nos.enable = true;

  # Primary interface
  nix-nos.interfaces.eth0 = {
    addresses = [ "10.0.0.10/24" ];
    gateway = "10.0.0.1";
    dns = [ "8.8.8.8" "8.8.4.4" ];
  };

  # BGP configuration for dynamic routing
  nix-nos.bgp = {
    enable = true;
    backend = "bird";
    asn = 65000;
    routerId = "10.0.0.10";

    # Peer with upstream routers
    peers = [
      { address = "10.0.0.1"; asn = 65001; description = "ToR switch"; }
      { address = "10.0.0.2"; asn = 65001; description = "ToR switch backup"; }
    ];

    # Announce local prefixes
    announcements = [
      { prefix = "203.0.113.10/32"; }
    ];
  };

  # VLAN segmentation for storage and management
  nix-nos.vlans = {
    storage = {
      id = 100;
      interface = "eth0";
      addresses = [ "10.100.0.10/24" ];
      mtu = 9000;  # Jumbo frames for storage traffic
    };

    mgmt = {
      id = 200;
      interface = "eth0";
      addresses = [ "10.200.0.10/24" ];
      gateway = "10.200.0.1";
      dns = [ "10.200.0.53" ];
    };
  };
}