I've got a tcng script where I use the HTB qdisc, when I try to simulate it via tcsim, it print's out the message: qdisc htb not found Does tcsim support HTB? When I'm using CBQ instead of HTB it presents no error messages and do the simulation properly. Thanks, Augusto. _______________________________________________________________________ Yahoo! Mail Mais espaço, mais segurança e gratuito: caixa postal de 6MB, antivírus, proteção contra spam. http://br.mail.yahoo.com/