tc (command)

wikipedia:Tc (Linux) show and manipulate traffic control settings

• Man page: https://man7.org/linux/man-pages/man8/tc.8.html

To increase round-trip

tc qdisc add dev eth0 root netem delay 5000ms

tc qdisc add dev eth0 root netem loss 10%

tc qdisc del dev eth0 root

tc qdisc show dev eth0 root

netem 
Network Emulator is an enhancement of the Linux traffic control facilities that allow to add delay, packet loss, duplication and more other characteristics to packets outgoing from a selected network interface.

Errors

tc qdisc add dev eth0 root netem delay 200ms 20ms 25% loss 1% 25% duplicate 2% corrupt 0.1% reorder 5% 50%

Related

• PacketShaper
• TeamCity
• iproute2
• tc-netem
• iperf

See also

• Traffic shaping: Network bandwidth, tc, PacketShaper, Traffic QoS, IEEE P802.1p, Netperf
• ip [link, route], ifconfig netstat ss lsof ping ethtool mii-tool arping nmcli(RHEL) route networkctl, netplan, tc

https://netbeez.net/blog/packet-loss-round-trip-time-tcp/