Hi, I''m interested in prioritizing all packets with the SYN bit on, both with and without the ACK bit on (but specially the SYN ACKS). I am checking is the use of Diffserv. From a paper I read I understood that when Diffserv is on, all "Control Traffic", including TCP SYN-ACKs, gets by default into "band 0" of Diffserv, the highest priority out of 16 bands. If true, this can suit my needs. The paper name is "Implementation of SRPT Scheduling in Web Servers", and they used kernel version 2.2.14 with a Diffserv patch. I am using kernel version 2.4.3, which I built with all "QoS and Fair Queueing" options on. My question is, what should I do now to make the prioritizing behaviour described above work ? any tc command ? Any comments are welcome. Best Regards, Oded Oded Shaham Flash Networks 16 Galgalei Haplada, Herzliya, Israel Tel: +972-9-9580666 ext. 215 Fax: +972-9-9564888 Cell phone: +972-5-4552009 Email: oded@flashnetworks.com