Traffic Accounting in Segment Routing Networks
draft-ali-spring-sr-traffic-accounting-02
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SPRING Working Group Z. Ali
Internet-Draft C. Filsfils
Intended status: Informational K. Talaulikar
Expires: December 6, 2018 Siva Sivabalan
Cisco Systems, Inc.
M. Horneffer
Deutsche Telekom
R. Raszuk
Bloomberg LP
S. Litkowski
Orange Business Services
D. Voyer
R. Morton
Bell Canada
G. Dawra
LinkedIn
June 7, 2018
Traffic Accounting in Segment Routing Networks
draft-ali-spring-sr-traffic-accounting-02.txt
Status of this Memo
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This Internet-Draft will expire on Expires December 6, 2018.
Ali, et al. Expires December 6, 2018 [Page 1]
Internet-Draft SR Traffic Accounting March 2018
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Abstract
Capacity planning is the continuous art of forecasting traffic
load and failures to evolve the network topology, its capacity,
and its routing to meet a defined Service-Level Agreement (SLA).
This document takes a holistic view of network capacity planning
and identifies the role of traffic accounting in network
operation and capacity planning, without creating any additional
states in the SR fabric.
Table of Contents
1 Introduction...................................................2
2 SR Traffic Counters............................................4
3 SR Traffic Matrix (TM).........................................4
3.1 TM Border ................................................4
3.1 Choosing TM Border .......................................5
3.2 Deriving Demand Matrix ...................................5
3.1 Traffic Matrix Counters ..................................5
4 Internet Protocol Flow Information Export (IPFIX)..............6
5 Segment Routing Traffic Accounting.............................6
6 Security Considerations........................................8
7 IANA Considerations............................................8
8 References.....................................................8
8.1 Normative References .....................................8
7.2............................................................9
9 Acknowledgments................................................9
10 Contributors ................................................9
1 Introduction
Capacity planning is the continuous art of forecasting traffic
load and failures to evolve the network topology, its capacity,
and its routing to meet a defined Service-Level Agreement (SLA).
This document takes a holistic view of traffic accounting and
its role in operation and capacity planning in Segment Routing
(SR) networks.
One of the main architecture principles of Segment Routing (SR)
is that it maintains per-flow states only at the ingress nodes
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