[Diffserv-interest] The relationship between qos routing and diffserv

[cathy <cathy_nj@sina.com>]

Hello all,

        In the paper "Differentiated Services in the Internet" of Dr. Carpenter. The relationship between Diffserv and qos routing is discussed. It concludes from statistics that "service levels are set up to hold across a cloud,not a particular path".It is the spirit of DiffServ,but I was confused that how the characteristic of the whole domain can be represented by only several edge routers?

       Suppose we use BB to manage the resource of the domain and execute admission control. when a new flow want to transmit data through the DiffServ domain, how can we do the admission control without concerning it's route? Since microflows in the same traffic aggregate will flow out the domain  from different egress router, how can the resource be reserved in the interior router?

       Does someone know this kind of work ?

       Thanks!

 

       Cathy