We develop a stochastic programming approach to solving an intra-ring Synchronous Optical Network (SONET) design problem. This research differs from pioneering SONET design studies in two fundamental ways. First, while traditional approaches to solving this problem assume that all data are deterministic, we observe that for practical planning situations, network demand levels are stochastic. Se...

There are two fundamental technology issues that challenge the robustness of IP backbones. First, SONET protection is gradually being removed because of its high cost (while SONET framing is kept for failure detection purposes). Protection and restoration are provided by the IP layer that operates directly over a DWDM infrastructure. Second, ISPs are systematically forced to use the shortest di...

Many sectors of society, business, and industry have become dependent on the availability of communication networks. Today virtually all forms of tra c, whether circuit switched as in telephony, cell-based, or packet-switched, such as in B-ISDN or the Internet, are combined into standard synchronous optical network (SONET) carrier signals for transport on ber optic transmission systems. A pair ...

The Internet Engineering Task Force (IETF) and the Telecommunication Standardization Sector of the International Telecommunication Union (ITU-T) have undertaken a joint effort to standardize a new transport profile for the multi-protocol label switching (MPLS) technology that is intended to provide the basis for the next generation packet transport network. The fundamental idea of this activity...

We propose a novel shared-wavelength WDM-PON architecture to accommodate downstream bursty traffic, and provide architectural support for different QoS to users. Downstream wavelengthallocation algorithm is proposed and its properties are evaluated. ©2006 Optical Society of America OCIS: (060.4250) Networks

The Point-to-Point Protocol (PPP) in RFC-1661 [1] provides a standard method for transporting multi-protocol datagrams over point-to-point links, and RFCs 1662 [2] and 1619 [3] provide a means to carry PPP over Synchronous Optical Network (SONET) [5] and Synchronous Digital Hierarchy (SDH) [6] circuits. PPP over Simple Data Link (SDL) using SONET/SDH with ATM-like framing (PPPEXT WG work in Pro...

The problem of minimizing the number of bidirectional SONET rings required to support a given traffic demand has been studied by several researchers. Here we study the related problem of minimizing the number of add/drop locations instead of the number of rings; in a number of situations this is a better approximation to the true equipment cost. Our main result is a new lower bound for the case...

Pseudo Wire Emulation Edge-to-Edge (PWE3) Architecture Status of This Memo This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited. Abstract This document describes an architecture for Pseudo Wire Emulation Edge-to-Edge (PWE3). It discusses the emulation of services such as Frame Relay, ATM, Ethernet...

The Recent introduction of new revenue-generating services based on Ethernet has made more acute the need to improve Ethernet by adding features essential for efficient data transport. Various enhancements to the bridged Ethernet protocols in terms of scalability, OAM, restoration, QoS, and synchronization are being standardized that are making the native Ethernet protocols suitable for the agg...