By Panos C. Lekkas
Community processing devices (NPUs) would be the get together of sweeping alterations within the community over the following few years. This new breed of microchip affects chip designers like Intel, gear proprietors like Cisco, program builders like IBM and Morotola, and a military of software program engineers who spent the decade engaged on protocols and community administration strategies. A completely functional dissection of the early NPU industry, this designer's advisor explains how community processors paintings and offers precise details on all significant advertisement architectures, from good points to layout concerns. Comparative tables are a wealthy resource of cross-industry details. insurance contains site visitors managers, type chips, content-addressable stories, change materials, protection accelerators, garage coprocessors and NetASICs
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Extra resources for Network processors : architectures, protocols, and platforms
This could be done over the Plain Old Telephone Service (POTS), the Internet, or something else. Cable-based broadband access clients are multiplexed through the local cable-TV company’s head-end equipment. The client might also use some sort of Digital Subscriber Line (DSL) modem or the latest wireless broadband last-mile access technology. It does not take a rocket scientist to realize that the provider networks also comprise two types of routers: provider network core routers and provider network edge routers.
However, data must be fetched continuously from memory so that the processor can work at any moment on the instruction at hand. It also produces data from operations. This data needs to be stored back in memory before new instructions are tackled. However, memory read and write operations are unable to sustain activity at these gigahertz rates. Therefore, elaborate memory subsystem designs must be devised using a multilevel hierarchy of different memory technologies, interleaving multiple memory banks, and synchronizing memory pages and bus access—techniques that usually lead to a prohibitive cost and levels of power consumption.
Access network equipment, which is the first layer of consolidation and the last layer of distribution by the service provider of traffic to and from multiple users, has a different set of essential requirements. The systems designer focuses primarily on the following: • A large-scale and (as much as possible) low-cost aggregation of multiple physical connections to subscribers. This is usually accomplished with rack-mounted devices and modem banks. • A small footprint of these rack-mounted and chassis devices.