tldr/pages/linux/tc.md

tc

Show / manipulate traffic control settings. More information: https://manned.org/tc.

• Add constant network delay to outbound packages:

tc qdisc add dev {{eth0}} root netem delay {{delay_in_milliseconds}}ms

• Add normal distributed network delay to outbound packages:

tc qdisc add dev {{eth0}} root netem delay {{mean_delay_ms}}ms {{delay_std_ms}}ms

• Add package corruption/loss/duplication to a portion of packages:

tc qdisc add dev {{eth0}} root netem {{corruption|loss|duplication}} {{effect_percentage}}%

• Limit bandwidth, burst rate and max latency:

tc qdisc add dev eth0 root tbf rate {{max_bandwidth_mb}}mbit burst {{max_burst_rate_kb}}kbit latency {{max_latency_before_drop_ms}}ms

• Show active traffic control policies:

tc qdisc show dev {{eth0}}

• Delete all traffic control rules:

tc qdisc del dev {{eth0}}

• Change traffic control rule:

tc qdisc change dev {{eth0}} root netem {{policy}} {{policy_parameters}}