You can change the limit of the queue by modifying the limit_ variable. set q [[$ns link $n1 $n2] queue] $q set limit_ <new_limit> hope this helps, Manish Yongmin Choi wrote: > > Hi ns-users, > > I'd like to change the buffer size of a link. > How can I do that? > Thanks in advance, > > Yongmin Choi > [email protected]