Linux Traffic Control Conditional Experiment

tc.sh

#!/bin/bash

# Interface
IFACE="eno1"

# Function to safely delete existing tc settings
safe_tc_delete() {
    tc qdisc del dev $IFACE root &> /dev/null || true
}

# Function to apply tc settings
apply_tc() {
    local loss=$1
    local rate=$2

    # Clear existing tc settings
    safe_tc_delete

    # Apply packet loss
    tc qdisc add dev $IFACE root handle 1: netem loss $loss

    # Apply bandwidth limit
    tc qdisc add dev $IFACE parent 1:1 handle 10: tbf rate $rate buffer 1600 limit 3000
}

# Array of bandwidth limits
BANDWIDTHS=("5.5mbps" "20mbps" "100mbps" "200mbps")

# Loop 10 times
for i in {1..10}; do
    # Apply each combination of packet loss and bandwidth
    for loss in {10..100..10}; do
        for rate in "${BANDWIDTHS[@]}"; do
            echo "Applying $loss% packet loss and $rate bandwidth..."
            apply_tc "${loss}%" $rate
            sleep 30s
        done
    done
done

# Clear tc settings at the end
safe_tc_delete

echo "Simulation completed."