ver traditional SONET), metro-optimized WDM (CWDM) possibly under GMPLS control, and evolving RPR. Customers may prefer an Ether- net handoff for carrier services because they are interested in TLS. They also want carrier-class, highly reliable, and secure services, especially if they have to funnel most of their corporate data traffic plus voice over a small set of multimegabit and even possibly multigigabit circuits. There is already excessive hype on the new GbE/10-GbE-based tech- nologies for metro applications. They are being offered as a panacea by pro- ponents. The economics presented are very superficial and miss the true test of what it takes to run a carrier function. There is an excessive selling of technology rather than services. Not enough true consideration has been given to robustness, scalability, and provisionability. Some of the new play- ers are naive and do not have a sustainable business model for offering a single-platform, single-service proposition, leading to low market penetra- tion, revenue, net income, valuations, and return for investors but, these are making up said lacunae by the might of high-gear public relations. Some recent Chapter 11 events substantiate this assertion. We believe that the next-generation players who will be successful are those who have a panoply of reliable and secure carrier-class services. These carriers have to be multiarchitecture, multitechnology, multiservice, and multi-QoS oriented. These carriers sell services, not technology. These car- riers give due consideration to developing technologies whether they are brand new or timely enhancements of old standbys, and use all of them to pursue a sophisticated technical and financial analysis of their advantages. 1.4 A Short Synopsis of Baseline Technologies SONET and WDM are two key technologies of interest. Some basic prelim- inary information on these two technologies is included. Figure 1-14 depicts Chapter 1 Figure 1-14 Capacity of TDM, Aggregate TDM+WDM, and Capacity (Gbps) Ethernet systems over the ye