Network Processors : Architectures, Protocols and Platforms by Panos Lekkas

By Panos Lekkas

Community processing devices (NPUs) often is the get together of sweeping alterations 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 options. A completely sensible dissection of the early NPU marketplace, this designer's consultant explains how community processors paintings and gives precise info on all significant advertisement architectures, from good points to layout issues. Comparative tables are a wealthy resource of cross-industry information. assurance comprises site visitors managers, category chips, content-addressable thoughts, swap materials, safeguard accelerators, garage coprocessors and NetASICs.

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For the boss, this usually means the market research work was not done thoroughly, and it is, of course, the product manager’s fault. com) Copyright © 2004 The McGraw-Hill Companies. All rights reserved. Any use is subject to the Terms of Use as given at the website. NETWORK PROCESSORS: JUSTIFICATION 38 NETWORK PROCESSORS Product lifetimes have shrunk dramatically. Launches of new products with enhanced features every six months make other recently launched products obsolete. The industry has become extremely competitive.

Switch Fabric The networking device is physically structured in several ways. The most straightforward and modular way is to use either a bus or a backplane into which adapter modules or line cards are inserted. The switch fabric is a functional module that reads packets at an input (also known as the ingress point) and routes them to an appropriate output (also known as the egress point). The current switch fabric function is usually offered in a highly integrated standard off-the-shelf chip set, as proposed by several vendors, such as Agere, IBM, Vitesse, and Zetacom.

All rights reserved. Any use is subject to the Terms of Use as given at the website. NETWORK PROCESSORS: JUSTIFICATION NETWORK PROCESSORS: JUSTIFICATION 39 • Just-in-time (JIT) delivery of new features As mentioned earlier, the rapidly changing reality of the market requires network gear vendors to provide new features and functional characteristics inside their products, such as the support of new protocols. Vendors who adopt the network-processor development path are able to embed this new functionality into their products without having to withdraw them from the market in order to replace them with something more recent or more updated.

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