Hi, First ... I am very sorry about my english. My name is Giuliano and I will start some basic tests on QoS under Linux The goal of these tests are to create a Laboratory to learn (and teach for future) QoS features. I would like to ask you a help to learn how to implement some basic tests to get the goal. How can I start ? What kind of tests can I do for showing the QoS features on a Lab environment What kind of applications I could test to get some results ? There is some kind of applications to show marked packages or queues working ? I was thinking in intall a client server environment with http, ftp, real player and other to test the features. The equipment that I have is: 2 cisco 2600 router with qdm and 2 machines with Debian GNU Linux (kernel 2.4.18) + iproute2. I would like to test diffservice and int service, besides to learn about TOs and queues and shapping I dont have any pratical with the issue and I will start learning basically, therefore I need some basic tests to start ... and I really dont know how to implement that. Thank you very much Giuliano