Computer networks are becoming increasingly complex with more and more devices connected each day. Gaining network visibility is absolutely crucial to ensure your traffic flows smoothly and transit costs are kept low. In this mini-series I will show you how to set-up sFlow sampling on Linux, aggregate the data and finally present it in flashy graphs.
Category: Networking
Computer networks are becoming increasingly complex with more and more devices connected each day. Gaining network visibility is absolutely crucial to ensure your traffic flows smoothly and transit costs are kept low. In this mini-series I will show you how to set-up sFlow sampling on Linux, aggregate the data and finally present it in flashy graphs.
A list of available action BGP communities for Core Backbone, AS33891.
I compiled a list of Vultr transits per location into a spreadsheet
Recently I found a list of test IPs for various OVH locations.
Explanation and analysis of today’s internet outage. What happened and what could’ve been done to prevent this?
My list of links that have been useful to me in the past and I keep returning to them.
As you may know, .arpa domains are used for reverse DNS. But did you know that they are usable for forward DNS too?
During a new server deployment I’ve come across the need to use ECMP on Linux. Turns out it’s actually really simple to configure. Read More
In the past few months, quite a few people have asked me this question: “I bought a VPS from provider X, turned up a BGP session with them and my routes are all marked unreachable”. Today’s post will hopefully shed some light on what causes this phenomenon and how to deal with it.