Transcript An Analytics Approach to Traffic Analysis in Network Virtualization

An Analytics Approach to Traffic Analysis in
Network Virtualization
Hui Zhang, Junghwan Rhee, Nipun Arora,
Qiang Xu, Cristian Lumezanu, Guofei Jiang
www.nec-labs.com
Motivation
 Challenges in virtual network trouble-shooting
– Complex configurations
– Miscellaneous network devices
– Assorted traffic groups
Multi-tenant Data Center
An in-host network
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FLOWVIEW Overview
 FLOWVIEW is a tool for visualizing and analyzing
OVS packet traces
– Summarization (from individual events to packet traces)
– Data reduction (trace categorization and clustering)
– Analysis (visualization and comparative analysis)
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Trace Slicing
 A holistic view on the lifetime of a packet
– a series of events collected from routers/switches
that the packet goes through during its routing.
– similar to IP Traceback output.
The snapshot of a FLOWVIEW slice example
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Slice Features
 FLOWVIEW defines three kinds of features on
slices
– Path features
– Link features
– Packet features
Path feature examples
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Trace Analysis
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Clustering of trace slices
Ranking of trace slices
Query of trace slices
Verification of trace slices
A ranking example
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Implementation
Clustering based
on slice features
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Conclusion
 FLOWVIEW is a tool for visualizing and
analyzing data center network packet traces
– individual trace events from hypervisors and
switches are re-organized into trace slices that
represent the life-time of packets.
– offers versatile analytics features such as clustering,
ranking, querying, verification as well as a graphical
interface.
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www.nec-labs.com
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