A Per-Domain Behavior for Circuit Emulation in IP Networks Kathleen Nichols Pollere LLC 325M Sharon Park Drive #214 Menlo Park, CA 94025 nichols@pollere.com Van Jacobson Packet Design Inc. 3400 Hillview Ave. Palo Alto, CA 94304 van@packetdesign.com Kedarnath Poduri Packet Design Inc. 3400 Hillview Ave. Palo Alto, CA 94304 poduri@packetdesign.com A BSTRACT Circuit networks are expensive to build, dif cult to operate, fragile, and not easily scalable. Many network operators would like to carry circuit traf c as an overlay on top of an IP network. With higher bandwidths, faster routers, and Differentiated Services [RFC2474, RFC2475] features in routers, this is now possible. In this paper we describe a simple set of mechanisms that are suf cient to allow an IP cloud to carry circuit replacement traf c. Then, using the framework of [RFC3086] for describing a Per-Domain Behavior (PDB), we explain where these mechanisms should be deployed and quantify how they should be con gured in order to construct the appropriate edge-to-edge behavior. This Virtual Wire (VW) PDB makes it possible to replace dedicated circuits with IP transport. In the process we attempt to lay to rest two pieces of QoS mythology: rst that a Diffserv approach
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A Per-Domain Behavior for circuit emulation in IP networks
Nichols, Kathleen; Jacobson, Van; Poduri, Kedarnath
Follow ACM SIGCOMM Computer Communication Review
, Volume 34 (2)
Association for Computing Machinery – Apr 1, 2004
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