limiting throughput  
```bash
tc qdisc add dev eno4 root handle 1: htb
tc class add dev eno4 parent 1: classid 1:50 htb rate 50mbit ceil 50mbit
tc class add dev eno4 parent 1: classid 1:100 htb rate 100mbit ceil 100mbit
tc class add dev eno4 parent 1: classid 1:500 htb rate 500mbit ceil 500mbit

tc qdisc add dev eno3 root handle 1: htb
tc class add dev eno3 parent 1: classid 1:50 htb rate 50mbit ceil 50mbit
tc class add dev eno3 parent 1: classid 1:100 htb rate 100mbit ceil 100mbit
tc class add dev eno3 parent 1: classid 1:500 htb rate 500mbit ceil 500mbit

iptables -t mangle -A POSTROUTING -o vlan20 -d 192.168.20.199 -j CLASSIFY --set-class 1:50
iptables -t mangle -A POSTROUTING -o vlan20 -d 192.168.20.199 -j CLASSIFY --set-class 1:100