Limit the speed of a particular interface

#!/bin/bash

# Replace eth0 with your interface name
IFACE=tap_biz

# Clear existing qdisc
/sbin/tc qdisc del dev $IFACE root 2>/dev/null

# Add HTB (Hierarchical Token Bucket)
/sbin/tc qdisc add dev $IFACE root handle 1: htb default 30
/sbin/tc class add dev $IFACE parent 1: classid 1:1 htb rate 4mbit ceil 5mbit
/sbin/tc class add dev $IFACE parent 1:1 classid 1:30 htb rate 4mbit ceil 5mbit

Route cip.cc to use CT

/1 * * * * /sbin/route add -net 8.153.103.12 netmask 255.255.255.255 gw 192.168.31.1
/1 * * * * /sbin/route add -net 8.153.105.77 netmask 255.255.255.255 gw 192.168.31.1