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PIM-SM protocol parallel processing technology and routing stability

Author: YuShengQiang
Tutor: FuYiDe
School: Nanjing University of Technology and Engineering
Course: Applied Computer Technology
Keywords: IP Multicast PIM-SM. Thread-level parallelism Stability problems
CLC: TP393.04
Type: Master's thesis
Year: 2011
Downloads: 5
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Abstract


PIM-SM protocol as the de facto industry standard IP multicast domain routing protocol , is widely used in the core multicast network . However, with the large-scale deployment of IP multicast traffic , PIM-SM protocol gradually facing serious challenges of performance, flexibility and scalability . PIM-SM protocol performance optimization study to become one of the important research direction to improve the efficiency of IP multicast . Currently based on single -core processor architecture serial program designed to enhance the performance of the PIM-SM protocol has been getting smaller and smaller , the emergence of multi-core processors to solve this problem , a new idea . Compared with single-core processors , multi-core processors have greater computing power , multi-level parallelism can be achieved . With mature design concept of multi-threaded parallel program , PIM-SM protocol thread-level parallel processing to enhance the performance of the PIM-SM protocol has become the inevitable choice . In this paper, in-depth analysis of the core working mechanism of PIM-SM protocol , to fully exploit the potential agreement internal logic parallelism , PIM-SM is proposed based on the logic function parallel and data-parallel combination of parallel processing model . Completed the protocol core state machine modeling using event-driven mechanism , and the overall structure of the PIM-SM protocol software system design . Access violation problem in order to solve the parallel process of routing table , the multicast routing table storage structure design based on two radix tree structure , and given the appropriate access control method . PIM-SM protocol software prototype system followed by a POSIX-based multi-threaded programming techniques to achieve elaborate on the key data structures and processes in the system , and The prototype system protocol conformance networking test . Finally , the stability problem of the PIM-SM protocol explore and expand the study , analyzed the impact of factors that lead to the instability of the agreement , proposed two ways to improve the stability of PIM-SM protocol solution , and NS2 network simulation tool of this method experimental and validation .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Computer network > General issues > Communication protocols, communication protocols
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