By Ran Giladi
ISBN-10: 0123708915
ISBN-13: 9780123708915
Community processors are basic construction blocks in sleek verbal exchange platforms, during which tens of Gbps community streams need to be processed in genuine time. present community purposes and site visitors requisites necessitate processing speeds and services which are past these of traditional, common objective primary processing devices. community processors are the single programmable answer that could deal with sleek community streams calls for. despite the fact that, imposing community processors calls for a brand new programming paradigm which may meet community processing requisites. This publication leads the reader throughout the specifications and the underlying conception of community processors, genuine purposes and implementation of community processors, and comprises the EZChip Microcode improvement setting in order that readers can achieve hands-on adventure in writing excessive pace networking purposes. through the tip of the booklet the reader may be capable of write and try out his personal functions on a simulated community processor. .Detailed assurance of what community processors are all approximately and what should be performed with them .Numerous, actual examples of networking purposes and implementations (analysis, set of rules, and code) are supplied
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Extra resources for Network Processors: Architecture, Programming, and Implementation
Sample text
In SONET, the basic sub-SPE synchronous signal is called Virtual Tributary (VT). There are several VT definitions for 3, 4, 6, or 12 columns of the SPE. 728 Mbps in bandwidth (8000 frames per second). 304 Mbps and so forth. 5 can contain T1 (DS-1 signal), and VT-2 can contain an E1 signal. 5, and four VT groups of VT-2). 16 on next page. 12 It occupies 84 of the 87 columns of the SPE; one of the remaining three is used for the POH (column 1), and the other two (columns 30 and 59) are fixed. 264Mbps).
Another way to categorize networks is based on their functions and the relationships between them (from which the span and the speed are derived). 3). As mentioned above,WANs are overlaid on the access, metro, regional, and core networks. 3. 1 The regional networks (sometimes referred to as core-metro) are many tens of miles in span, carrying 10 Gbps, and 1 Regional Central Office (RCO, also called Toll-Center, TC) uses interfacing and switching equipment that is analogous to the class 4 telecommunications switches, or tandem switches, used in the traditional telephone network hierarchy.
The last operation is to add the Section Overhead (SONET’s equivalent of TOH) to the AUG, and to make it a STM frame. 17 summarizes this multiplexing structure, where formations from containers to VCs are done by mapping, from VCs to TUs or AUs by aligning (both TUs and AUs are themselves pointer processing), and all the rest are done by multiplexing. Several enhancements to SONET/SDH were standardized to handle data traffic. These include Virtual Concatenation (VCAT), Link Capacity Adjustment Scheme (LCAS), and Generic Framing Procedure (GFP).
Network Processors: Architecture, Programming, and Implementation by Ran Giladi
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