Towards highly available clos-based WAN routers
Towards highly available clos-based WAN routers
复制标题
迈向高可用的基于 clos 的 WAN 路由器
DOI:
10.1145/3341302.3342086
复制
发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Govindan, Ramesh
中科院分区:
文献类型:
--
作者:
Supittayapornpong, Sucha;Raghavan, Barath;Govindan, Ramesh
The performance and availability of cloud and content providers often depends on the wide area networks (WANs) they use to interconnect their datacenters. WAN routers, which connect to each other using trunks (bundles of links), are sometimes built using an internal Clos topology connecting merchant-silicon switches. As such, these routers are susceptible to internal link and switch failures, resulting in reduced capacity and low availability. Based on the observation that today's WAN routers use relatively simple trunk wiring and routing techniques, we explore the design of novel wiring and more sophisticated routing techniques to increase failure resilience. Specifically, we describe techniques to 1) optimize trunk wiring to increase effective internal router capacity so as to be resilient to internal failures, 2) compute the effective capacity under different failure patterns, and 3) use these to compute compact routing tables under different failure patterns, since switches have limited routing table sizes. Our evaluations show that our approach can mask failures of up to 75% of switches in some cases without exceeding routing table limits, whereas competing techniques can sometimes lose half of a WAN router's capacity with a single failure.
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DOI:
--
发表时间:
1982
期刊:
International Conference on Parallel Processing
影响因子:
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作者:
D. Dias;J. Jump
通讯作者:
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2021
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期刊:
IEEE International Conference on Distributed Computing Systems
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