MPLS VPN QoS with GNS3 and Virtualbox

The integration of Virtualbox with GNS3 has driven me crazy as simulations you can do with it are limitless. When QoS over MPLS is concerned, not many websites are available explaining it in simple terms. The vast majority of results you might get on google would refer to Cisco documentations. It gives me chills to refer to Cisco documentations as it is just too vast and the thought of it overwhelms me. So in this blog, we will see how QoS works in an MPLS environment and the various types and options available with it. We will make a vanilla MPLS setup so that we can concentrate more on QoS. Continue reading

QOS with GNS3 and Virtualbox

With the addition of Virtualbox to GNS3, you can do all sorts of simulations (except full switching) involving routers, firewalls, servers (windows or linux), applications, etc. It used to bother me a lot to run a network topology and rely on ping and tftp as test traffic for QOS. Now you do not have to rely on boring traffic to test QOS. You can use actual user traffic and classify and mark it on your routers to give it preferential treatment. You can set bandwidth caps on certain protocols, you can prioritise certain protocols, you can remark certain protocols, etc. The options for QOS testing are limited by your imagination.

In this blog, we will cover basic user traffic like web, ftp and windows sharing and classifying them to mark for QOS treatment. We will rate limit some, prioritise some and remark some on our network and see its effects on the destination end. We can also use the relevant show commands to verify proper operations. Continue reading