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Questions tagged [iperf]

Iperf is a network testing tool for performance and tuning that can create TCP and UDP data streams and measure the throughput of a network that is carrying them.

Iperf is a network testing tool for performance and tuning that can create TCP and UDP data streams and measure the throughput of a network that is carrying them.

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Mininet Python - AttributeError: 'dict' has no attribute 'hosts'

I am trying to write my own python script to enable me to monitor traffic and perform basic attacks and prevent those attacks using a basic firewall. I have never used mininet before so might be doing something obviously wrong to a more experienced…
Arid Amoeba
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How to make receiving node to stop automatically after one connection in D-ITG Traffic Receiver

I am performing a traffic generation between two hosts in mininet RYU using D-ITG. I used ITGRecv at receiving end and ITGSend at Sending host. But what I want is after completion of a flow between the nodes the receiver should shutdown that…
Vinay
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How to make mininet with RYU SDN work properly with iperf traffic?

when I generate iperf UDP traffic on a linear topology with 6 switches in mininet which is connected to RYU controller, I am getting a lot of packet in messages. like same switch is sending packet in messages for that traffic more than one time. Why…
Vinay
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I want to run mutliple linux commands simultaneously using python

while trying to use subprocess library in a for loop in python to execute multiple commands simultaneously the loop doesn't go for the next iteration until the system does an output. so I decided to remove the part of outut, err = p.communicate().…
Andrew Mrx
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Problems after Installing iperf 3.7.0

I was just installed the latest version of iperf3 in Ubuntu 18.4. First I cloned the files from iperf's GitHub repository and proceeded wit the installation process: ./configure make make install I ran make check and all tests passed. But when I…
olg32
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iperf tests with Android Q

I am attempting to upgrade an existing iperf application to Android Q. I am running into trouble when executing the command line - error=13, Permission denied to be specific. Is this due to the new file access restrictions on Q? I have tried…
Katie Rogers
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How TCP flow's rate change when congestion occur

Thank you for clicking my question. I'm doing a small experiment for understanding the behavior of TCP flows at congestion. At this experiment, I found the tcp flow's rate is much bigger than I think, when congestion occur. I think its rate should…
nimdrak
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Iperf client reporting too high throughput in Mininet with TCLinks

I'm using Mininet to test out achieved throughputs for different congestion control algorithms. Now I'm seeing something that does not really make sense to me. When running a standard Mininet network with TCLinks that have a bandwidth and delay,…
phyratokar
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How can iperf reporting packet loss in udp

Iperf is the well known tool to calculate throughput. When i tried udp throughput using iperf on my linuxpc, It reported that 10% of packet loss. In UDP protocol, data gram did not receice any acknowledgements. But, in what way iperf is reporting or…
Vijay Kalyanam
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How to implement iperf module for Bandwidth monitoring in this python chatroom?

https://iperf.fr/iperf-doc.php https://iperf.fr/ //server.py import socket import select import sys from thread import * server = socket.socket(socket.AF_INET, socket.SOCK_STREAM) server.setsockopt(socket.SOL_SOCKET,…
Akshat Jain
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Iperf flow is not assigned to queue

I'm new to ryu rest QoS. I'm trying to create QoS queue and divide bandwith link to two iperf flows. First flow max-rate is 300Kbps. Second flow min-rate is 700Kbps. Link bandwith is 1Mbps. Problem is both flow are using circa half…
Torrado36
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generating network traffic with iperf without a server

I need to exercise some hardware by sending a network traffic with it. While it is doing it I will probing some of the lines with an oscilloscope. Need to verify signaling. The problem is that I won't be able to connect to any server during the…
flashburn
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iperf - what is the meaning of bandwidth?

I am using iperf for testing ethernet performance. It has several capabilities which I am using: measuring maximal bandwidth for example with iperf -c 192.168.0.1 statistics of packet loss for a given bandwidth, for example with iperf -uVZc…
ransh
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iperf connects but does not report output

I am using iperf to test network bandwidth between two Ubuntu 16.04.2 hosts (10.0.0.1 and 10.0.0.51). I ran "iperf -s" on 10.0.0.51 and then ran "iperf -c 10.0.0.51 -T 10" on 10.0.0.1. I do see the connection establishment (i.e. local 10.0.0.51 port…
NKD
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Iperf for Xmarin forms

I am trying to build an app which utilizes Iperf under the hood. Preferably I would use Iperf 2.0.5, but I could use iPerf3 if it makes a lot more sense. (I would just also need to change some server code). The source code is here. Since it is…
user638750
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