Hi all, I write to this list as its full of networwing experts. A client asked if it was possible to replace a very expensive QoS appliance with a Linux box to make QoS on a big network. Sustained traffic is around 400Mbps and they need around 1000 QoS classes. Some thoughts on this: 1) Of course we will purchase the fastest box we can find around, dual xeon and such. 2) As the system runs as a bridge we are kind of scared to use 2.6 kernel as it seems quite unstable in that mode. 3) Instead of using standard QoS clasdsification (linear) we were thinking about using clasiffy target in shorewall (the reason I send this message here) and use all its "zone decission tree" power. That way, we stll have all those classes but are not read linearly but some logic is applied in the tree. 4) As this box ideally would include a netflow probe, we were thinking about using pf_ring kernel patch. Any experience in the list using this patch with a system that is both a probe and QoS? 5) We were thinking about using hipac, but we dont know if it supports clasiffy target, do you know if it does? Any ideas will be REALLY appreciated. Actually, if this project is approved we will contribute to shorewall our work in hipac support :) Thanks in advance. Regards. -- Jaime Nebrera - jnebrera@eneotecnologia.com Consultor TI - ENEO Tecnologia SL Telf.- 619 04 55 18 ------------------------------------------------------- This SF.Net email is sponsored by the JBoss Inc. Get Certified Today * Register for a JBoss Training Course Free Certification Exam for All Training Attendees Through End of 2005 Visit http://www.jboss.com/services/certification for more information