Hi Stef, lo all, Am hoping someone could have the time to look at my simple script, it basically tries to restrict users based on their ip, but I also incorporated the hints given by Stef on being able to allow local traffic unrestricted. no iptable marking (fw filter) is used, just tc. I see traffic passing thru all the classes when ever those systems are in use. Ave done some stress test on the local traffic by plugging p2p/web crawlers on the LAN of one of the systems, each time i notice that the parent ceil limit is being broken. I have met the one major requirement, sum of child classes rate <= parent rate. I dont know what else i might be doing wrong, once placed perturb to 1, and internally(kernel) am using PSCHED_CPU and a sfq buffer length of 15 as against 128. (notes on docum.org) to try and increase speed. (Processor has TSC flag) Would be much obliged on any comments/improvements i can make on the script. Using kernel 2.4.22 TIA K _________________________________________________________________ MSN Shopping upgraded for the holidays! Snappier product search... http://shopping.msn.com