Check out Packeteer. I used to work somewhere about that size and this was the product we used: http://www.bluecoat.com/products/packetshaper/ Open source you can do a custom setup with IPTables and iproute2, but it will take some work to get the same kind of features and management interface. LARTC is a good reference for this kind of topic: http://lartc.org/. Also I'm not sure if someone has built this into any of the firewall specific linux distros yet, so you may want to explore those a little. Good luck, -Scott -----Original Message----- From: Bruce Grobler [mailto:bruce@yoafrica.com] Sent: Friday, January 30, 2009 12:34 AM To: nanog@nanog.org Subject: Shaping on a large scale Hi, Does anyone know of any Shaping appliances to shape customers based on IP, allow for a quota per IP and qos mechanisms like LLQ?, This is should be something that can sit in between two border router's and support a small ISP (20000 customers), also an opensource solution would be great! Regards, Bruce