Day: March 4, 2020

pinging with iperf vs without iperf

I am running a basic point to point topology on mininet. If I do h2 ping h1, I get such rtt values:

rtt min/avg/max/mdev = 0.028/0.067/0.129/0.022 ms

But when I ping while the iperf is measuring, my average time value is much greater. W…

PoE-safe Cable Tester

We use a lot of midspan PoE injectors here, rather than PoE switching1, and I recently burned out my third cable tester in the last 2 years by accidentally plugging into a line with an active injector.

Now I need to replace it, and I’d l…