~/talk

Reasoning about Network Traffic Load Property at Production Scale

on YouTube 17m
Talkat 21st USENIX Symposium on Networked Systems Design and Implementation (NSDI '24) · 2024-04-16..04-18· [networking]

speakers

name:Ruihan Li
links:none on file
name:Fangdan Ye
links:none on file
name:Yifei Yuan
links:none on file
name:Ruizhen Yang
links:none on file
name:Bingchuan Tian
links:none on file
name:Tianchen Guo
links:none on file
name:Hao Wu
links:none on file
name:Xiaobo Zhu
links:none on file
name:Zhongyu Guan
links:none on file
name:Qing Ma
links:none on file
name:Xianlong Zeng
links:none on file
name:Chenren Xu
links:none on file
name:Dennis Cai
linkedin:dennis-cai-45699a2b
name:Ennan Zhai
linkedin:ennan-zhai-26818b17

resources

video:https://youtu.be/AsN9joaPDAU
slides:none on file

summary

Describes Jingubang, a system for checking whether network link utilization thresholds (e.g., >80%) are violated during WAN changes by modeling complex traffic behaviors from BGP, IS-IS, policy-based routing (PBR), and segment routing (SR). It introduces the traffic distribution graph (TDG) to represent ECMP, packet rewriting, and tunneling, an algorithm to efficiently simulate billions of flows over time, and an incremental simulation that computes an incremental TDG and only simulates differential traffic to enable real-time, failure-tolerant checks.

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