simple bandwidth shaping with cshaper

This example configures traffic control settings using the cshaper feature:

  • configure interface eth0 with an ipv4 address
  • add traffic control shaping with the cake qdisc
  • add a ifb0 device for incoming shaping on eth0
  • set shaper to 80Mbps ingress and 30Mbps egress speed
interfaces:
  eth0:
    addresses:
      - 192.0.2.1/24
    link:
      kind: physical
      state: up
    cshaper:
      egress: 30mbit
      ingress: 80mbit

{
  networking.ifstate = {
    enable = true;
    settings = {
      interfaces.eth0 = {
          addresses = [ "192.0.2.1/24" ];
          link = {
            kind = "physical";
            state = "up";
          };
          cshaper = {
            egress = "30mbit";
            ingress = "80mbit";
          };
        };
    };
  };
}

# configure interfaces
ip link add name ifb0 type ifb
ip link set ifb0 up
ip address add 192.0.2.1/24 dev eth0
ip link set eth0 up

# configure traffic control shaping
tc qdisc add dev ifb0 parent root handle 1: cake bandwidth 80mbit
tc qdisc add dev eth0 parent root handle 1: cake bandwidth 30mbit
tc filter add dev eth0 parent ffff: matchall action mirred egress redirect \
  dev ifb0