Enter the target (IP) of your test in the Host textbox, then click on Start. Wait one or two minutes before you stop the test. You can then make a screenshot or export the result with the functions of the software.

Example of MTR between a Scaleway Dedibox server and free.fr:

root@163-172-30-2:~# mtr --report free.fr
Start: Sun May  1 16:23:57 2016
HOST: 163-172-30-2                Loss%   Snt   Last   Avg  Best  Wrst StDev
1.|-- 163-172-30-1.rev.poneytel  0.0%    10    0.5   0.5   0.4   0.5   0.0
2.|-- 195.154.1.248              0.0%    10    1.6   1.0   0.9   1.6   0.0
3.|-- 195.154.1.254              0.0%    10    1.2   1.4   1.2   2.6   0.3
4.|-- th2-crs16-1-be1503-t.intf  0.0%    10    1.3   1.3   1.1   1.4   0.0
5.|-- p11-crs16-1-be1001.intf.r  0.0%    10    4.5   3.0   1.4   4.5   0.7
6.|-- p11-9k-1-be1000.intf.rout  0.0%    10    1.5   2.1   1.4   3.5   0.6
7.|-- bzn-9k-2-sys-be2001.intf.  0.0%    10    1.7   1.8   1.6   2.8   0.0
8.|-- www.free.fr                0.0%    10    1.2   1.2   1.2   1.2   0.0

The results show:

Loss%: The percentage of lost packets
Snt: The number of packets sent during the test (here 10)
Last: The latency of the last packet sent between two points
Avg: Average latency for all packets sent between two points
Best: Latency of the best result
Wrst: Latency of the worst result

IPERF test

With an IPERF test you can check the available bandwidth of your server.

The iperf server ping.online.net has several ports available (5200-5209). If the server is busy on the default port, you can specify another port using the -p flag, for example: -p 5203 (5204, 5205, etc.).

On Linux

If iperf is not yet installed on your server, you can install it with the following command:

sudo apt-get install iperf3

yum apt-get install iperf3

Then launch the test:

root@163-172-30-2:~# iperf3 -c ping.online.net -R
------------------------------------------------------------
Client connecting to ping.online.net, TCP port 5001
TCP window size: 85.0 KByte (default)
------------------------------------------------------------
[  3] local 163.172.30.2 port 36490 connected with 62.210.18.40 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0-10.0 sec  1.10 GBytes   943 Mbits/sec
If your server is located at Amsterdam execute: root@163-172-30-2:~# iperf3 -c ping-ams1.online.net -R

On Windows

Download the tool from its website.
Choose the latest version and download the file.
Extract the file.
Open a terminal and run the following command:
```
\iperf3.exe -c ping.online.net -p 5203
```

The results show:

Interval: Sampling interval in seconds
Transfer: Amount of data transferred during the test
Bandwidth: Available bandwidth of your server

If your server’s network port is off

Sometimes when you change the mode of your dedicated server from normal to rescue mode during the reboot of a server, you may see the following error message in your console:

Important:

Your server’s network port is off. If you just asked for a server reboot, or to boot in rescue or test mode, this message will only be displayed for a few seconds. Otherwise, our network equipment may be on protective mode due to non-authorized traffic. In this case, please ask the support team to unlock your server.

If this message is visible for a longer period or cycles every 5 minutes, it means your server is either distributing unauthorized traffic in the style of DHCP, distributing a MAC address that is not assigned to the server, ARP requests, too many requests per second in sending or receiving on your server.

If you continue to see this message, empty the cache of your browser as the old page may be kept in it. Alternatively, you can reload the page several times until the message disappears.

Important:

When setting up the WAN interface on a PfSense firewall you should disable auto-configuration, as it might cause an IPv6 packet flood shutting down your server’s network port. If your network ports do not become available after a few minutes, you need to contact the support.