How to test your LAN - Bandwidth - Delay - Speed - ..

[Y4ssine]

Hello All,

I was wondering if there was a way to test your LAN from a device connected to switch A to a device connected to switch B. We have a Cisco environment and I was wondering if there were some tools such as JPERF/IPERF or something else to configure to check this. I am looking forward to the feedback.

Kind regards,

Y4ssine

[Seb Rupik]

Hi there,

Take a look at IP SLA for testing of certain metrics:

https://learningnetwork.cisco.com/blogs/vip-perspectives/2017/06/13/ip-sla-fundamentals

For testing of bandwidth across links, as you have found iperf is an excellent tool.

If you have a heap of money to throw at testing you could invest in some hardware made by Ixia,  which will simulate all types of network traffic and measure its performance across your network. 

https://www.ixiacom.com/products/ixload

https://www.ixiacom.com/products/ixchariot

cheers,

Seb.

[Giuseppe Larosa]

Hello Yassine,

using iperf or netperf is a good way to verify performance.

However, when you perform a TCP throughput the results will never be 100% of line rate as there is TCP session setup 3way handshake before sending traffic.

Hope to help

Giuseppe

[shaps]

To add Guiseppe, the NICs on a normal PC/Laptop are also a limiting factor and will need to be factored in