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Network Troubleshooting Tools

Network Measurement Tools

The easiest way to install the most up-to-date version of several useful network test tools is from the perfsonar.net software repo:

RHEL-based systems: (more info)

  RHEL6: rpm -hUv http://software.internet2.edu/rpms/el6/x86_64/main/RPMS/perfSONAR-repo-0.8-1.noarch.rpm
RHEL7: rpm -hUv http://software.internet2.edu/rpms/el7/x86_64/main/RPMS/perfSONAR-repo-0.8-1.noarch.rpm
yum -y install perfsonar-tools

Debian-based systems: (more info):

cd /etc/apt/sources.list.d/
# Debian 7 / Ubuntu 14:
wget http://downloads.perfsonar.net/debian/perfsonar-wheezy-release.list
# Debian 8 / Debian 9 / Ubuntu 16:
wget http://downloads.perfsonar.net/debian/perfsonar-jessie-release.list
wget -qO - http://downloads.perfsonar.net/debian/perfsonar-debian-official.gpg.key | apt-key add -
apt-get update
apt-get install perfsonar-tools

OSX systems  (install homebrew)

   brew install iperf iperf3 nuttcp bwctl owamp

Note: Be sure to tune your hosts TCP settings, as described here.

Measurement Tool
Feature
pScheduler schedules tests, one at a time (wrapper for iperf and nuttcp)
iperf /iperf3 measures end-to-end TCP/UDP performance
nuttcp measures end-to-end TCP/UDP performance
owamp measures latency, loss, and jitter
traceroute / scamper measures the network path and MTU

Network Testing Tools

Testing Tool
Purpose
Measurement Lab provides testing for a wide range of network trouble-areas
tcpdump dumps all TCP header information for a specified source/destination
tcptrace formats tcpdump output for analysis using xplot