Transcript bmwg-3

IP Flow Information Accounting and Export
Benchmarking Methodology
http://tools.ietf.org/id/draft-novak-bmwg-ipflow-meth-05.txt
Jan Novak
Cisco Systems
Presenting to BMWG @ IETF77
10/04/2016
draft-novak-bmwg-ipflow-meth-05.txt
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Document Goal
• Defines metrics to characterise Flow
Monitoring performance based on:
- Architecture Model for IP Flow Information
Export: RFC5740
• Defines conditions to perform Network
Devices benchmarking in the presence of
Flow Monitoring
– IPv4 Benchmarking Methodology: RFC2544
– IPv6 Benchmarking Methodology: RFC5180
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Test Topology
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The Concept – DUT
IPFIX | Sflow | Netflow | Others
Flow Export
Flow Monitoring
Plane
Metric:
Flow Record rate
Traffic information
packets
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Forwarding Plane
draft-novak-bmwg-ipflow-meth-05.txt
Metric:
packet rate
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What is the Benchmark
Flow Monitoring Plane:
How many Flow Records the DUT can handle
per second without dropping any Flow
information and packets – Flow Monitoring
Throughput
Data Forwarding Plane:
RFC2544 Throughput measured in the presence
of Flow Monitoring
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CHANGES from version 4
Merged Normal and Overflow Cache
Mode (former section 5.1 and 5.2)
into one section/test set-up
Allows for the test abstraction from
the implementations or platform
HW/SW restrictions
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CHANGES from version 4
Moved all miscellaneous tests into
another Appendix B
Moved Bidirectional Traffic set-up into
Appendix B
Clarified the set-up with several
observation points
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CHANGES from version 4
Added more details on Flow Export
Rate measurement – section 5.5
Expanded the RFC2544
measurements (section 6) with more
details regarding test conditions and
traffic set-ups
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Version 5 addresses all so far
received comments and open
issues from the last meeting
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Proposed Scope Item
(discussed on the list)
• Flow Export and Collection: Develop terminology
and methods to characterize network devices
flow monitoring, export, and collection.
• The goal is a methodology to assess the
maximum IP flow rate that a network device can
sustain without losing any IP flow information or
compromising the accuracy of information
exported on the IP flows,
• and to asses the forwarding plane performance
(if the forwarding function is present) in the
presence of Flow Monitoring.