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Simplifying Forwarding Data Plane Operations with XOR-Based Source Routing

delete2023-12-21
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PRE
AI
J
Jérôme Lacan
E
Emmanuel Lochin *
DOI:10.1007/s10922-023-09791-8delete
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摘要

摘要

En 中文
We propose a theoretical analysis of a novel source routing scheme called XSR. XSR uses linear encoding operation to both (1) build the path labels of unicast and multicast data transfers; (2) perform fast computational efficient routing decisions compared to standard table lookup procedure without any packet modification all along the path. XSR specifically focuses on decreasing the computational complexity of forwarding operations. This allows packet switches (e.g, link-layer switch or router) to perform only simple linear operations over a binary vector label that embeds the path. We provide analytical proofs demonstrating that XSRs efficiently compute a valid unicast or multicast path label over any finite fields F-2w. Furthermore, we show that this path label can be used for both the forward and return unicast paths, unlike other source routing algorithms that require recomputing a label for the return path. Compared to recent approaches based on modular arithmetic, XSR computes the smallest label possible and presents strong scalable properties, allowing it to be deployed over any kind of core vendor or datacenter networks.
Keyword:
Source/segment routing
Optimal path label encoding
Label switching
SDN

期刊

Journal of Network and Systems Management 封面图
Journal of Network and Systems Management
IF:
3.9
论文数:
1.0K
被引数:
1.3K

机构

Institut Superieur de l'Aeronautique et de l'Espace 封面图
Institut Superieur de l'Aeronautique et de l'Espace
学者数:
514
论文数: 410
被引数: 405
U
universite de toulouse
学者数:
3.5W
论文数: 2.7W
被引数: 37
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