I am doing an experiment between three computers that are connected with 10Gig interfaces and have RTT of 100 microseconds. Let's say these are machines A, B, and C. Machine A is communicating with B and C. Machines B and C do not communicate with one another.
I want to throttle bandwidth such that the machines A and B have 5Gbps bandwidth and 100 millisecond latency. Whereas, the machines A and C does not have any bandwidth and latency throttling. My goal is to emulate a wide area network with large bandwidth available.
I have tried using HTB and prio to throttle the bandwidth and latency. However, the maximum bandwidth reached is about 350 Mbps. I tested through iperf. My understanding is that we cannot have bandwidth more than 1Gig using TC.
Is there any way or any tool to throttle bandwidth above 1Gig?
I am using the following TC commands:
sudo tc qdisc del dev p4p1 root sudo tc qdisc add dev p4p1 handle 1: root htb r2q 1000 sudo tc class add dev p4p1 parent 1: classid 1:3 htb rate 1000Mbps sudo tc qdisc add dev p4p1 parent 1:3 handle 23: netem delay 50ms limit 100000000 sudo tc filter add dev p4p1 protocol ip prio 9 u32 match ip dst 10.96.0.1 flowid 1:3