Posted on

Reddit – Link list

For my sake I posted this comment from a Moderator on Sysadmin that points at resources for learning more about a variety of topics including Cisco networking, Linux, Microsoft and information security.

Comment from discussion VA_Network_Nerd’s comment from discussion "Article, using statistics from google’s data centers, about reliability of SSD drives used as 24/7 enterprise storage.".

Another recommendation is to peruse the Gilded posts in this forum. A list of some of the best posts as voted up by the community.

https://www.reddit.com/r/sysadmin/gilded

Posted on

Using iPerf to test bandwidth

We can measure link bandwidth between two hosts by using iPerf.

Configure the server:

iperf -s -u

Configure the client:

iperf -c 172.20.255.254 -u -b 100m  -d -i 1

  1. -c Connect client to server at IP 172.20.255.254
  2. -u Use layer 4 transport protocol UDP instead of the default, TCP
  3. -b Send traffic over UDP and a bandwidth of 100 Mbit/s
  4. -d Make test in both directions
  5. -i Provide updates at 1 second intervals until test completes

 

 

References:

  1. https://www.sd-wan-experts.com/iperf-bandwidth-testing/
  2. https://fasterdata.es.net/performance-testing/network-troubleshooting-tools/iperf-and-iperf3/
  3. https://iperf.fr/