Dinesh, thank you, this problem was solved few days ago: https://puck.nether.net/pipermail/redback-nsp/2009-May/000166.html p.s. burst = rate / 8 * 1500 WBR, Ilya Savin. >Rule of thumb is > >burst = 1.5 X rate > >can you try changing burst to 1500 and try ? > >Regards >Dinesh