By Panos Lekkas
ISBN-10: 0071409866
ISBN-13: 9780071409865
ISBN-10: 0071429123
ISBN-13: 9780071429122
Community processing devices (NPUs) could be the celebration of sweeping adjustments within the community over the following couple of years. This new breed of microchip affects chip designers like Intel, gear proprietors like Cisco, software builders like IBM and Morotola, and a military of software program engineers who spent the decade engaged on protocols and community administration ideas. A completely useful dissection of the early NPU marketplace, this designer's consultant explains how community processors paintings and offers designated info on all significant advertisement architectures, from beneficial properties to layout issues. Comparative tables are a wealthy resource of cross-industry information. assurance contains site visitors managers, class chips, content-addressable stories, swap materials, defense accelerators, garage coprocessors and NetASICs.
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Extra info for Network Processors : Architectures, Protocols and Platforms (Telecom Engineering)
Example text
Obtaining the appropriate performance and functionality in network devices is one of the key factors for determining the usefulness, desirability, and business potential of these devices within the corporate or service provider markets. Throughout this book, we use the term packet in a general sense to describe a datagram unit, meaning either a cell, packet, or frame. If we are discussing something very network specific, such as the Asynchronous Transfer Mode (ATM) environment, we will call the datagram unit a cell.
Network device vendors have also tried this alternative approach. We will not elaborate on this point, as it is unrelated to the topic of network processors. To give the reader a full dose of reality from both sides, we should mention the other side of the argument about the network processors. More specifically, we should clarify that to a certain extent network processors did not succeed immediately or live up to the expectations that they had raised in the industry. First, most network processor vendors needed to go through multiple generations of their designs just to get it right.
For example, say marketing did not fully understand what the market was looking for. In that case, all the interim work of scripting, synthesizing, verifying, simulating, documenting, and so on has probably vaporized. The precious time to market has been lost and the money needed for that work has essentially been thrown away, straining budgets and strangling metrics of profitability or return on investment (ROI). This is an unfortunate but all too real side effect of the ASIC design process, and its importance should not be underestimated.