A Flow Control Scheme Based on per Hop and per Flow in Commodity Switches for Lossless Networks

Shie-Yuan Wang*, Yo Ru Chen, Hsien Chueh Hsieh, Ruei Syun Lai, Yi-Bing Lin

*此作品的通信作者

研究成果: Article同行評審

摘要

Performing flow control inside a network can effectively avoid packet loss due to buffer overflow in switches. IEEE 802.3x exercises a per-hop link-based flow control scheme to achieve this goal. IEEE 802.1Qbb Priority-based Flow Control (PFC) improves IEEE 802.3x by proposing a per-hop per-service-class flow control scheme. Although PFC is better than IEEE 802.3x, it still suffers from several serious problems such as congestion spreading, deadlock, and packet loss. In this work, we propose a per-hop per-flow scheme to mitigate these problems. We design, implement, and evaluate the performance of our scheme in P4 hardware switches. Experimental results show that (1) our scheme outperforms PFC in many aspects including avoiding congestion spreading, deadlock, and packet loss, and (2) the bandwidth overhead of our scheme is only slightly higher than that of PFC.

原文English
文章編號9622218
頁(從 - 到)156013-156029
頁數17
期刊IEEE Access
9
DOIs
出版狀態Published - 19 11月 2021

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