Service Function Chaining Use Cases In Data Centers
draft-ietf-sfc-dc-use-cases-06
Service Function Chaining S. Kumar
Internet-Draft Cisco Systems, Inc.
Intended status: Informational M. Tufail
Expires: August 26, 2017 Citi
S. Majee
F5 Networks
C. Captari
Telstra Corporation
S. Homma
NTT
February 22, 2017
Service Function Chaining Use Cases In Data Centers
draft-ietf-sfc-dc-use-cases-06
Abstract
Data center operators deploy a variety of layer 4 through layer 7
service functions in both physical and virtual form factors. Most
traffic originating, transiting, or terminating in the data center is
subject to treatment by multiple service functions.
This document describes use cases that demonstrate the applicability
of Service Function Chaining (SFC) within a data center environment
and provides SFC requirements for data center centric use cases, with
primary focus on Enterprise data centers.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
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Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on August 26, 2017.
Kumar, et al. Expires August 26, 2017 [Page 1]
Internet-Draft SFC DC Use Cases February 2017
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Requirements Language . . . . . . . . . . . . . . . . . . 4
2. Definition Of Terms . . . . . . . . . . . . . . . . . . . . . 4
3. Use Cases . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.1. Traffic Types . . . . . . . . . . . . . . . . . . . . . . 6
3.2. North-South Traffic . . . . . . . . . . . . . . . . . . . 6
3.2.1. Sample north-south service function chains . . . . . 8
3.2.2. Sample north-south SFC description . . . . . . . . . 8
3.3. East-West Traffic . . . . . . . . . . . . . . . . . . . . 9
3.3.1. Sample east-west service function chains . . . . . . 10
3.3.2. Sample east-west SFC description . . . . . . . . . . 10
3.4. Multi-tenancy . . . . . . . . . . . . . . . . . . . . . . 11
3.5. SFCs in data centers . . . . . . . . . . . . . . . . . . 11
3.6. Inter-datacenter SFCs . . . . . . . . . . . . . . . . . . 13
3.6.1. Methods for inter-datacenter SFCs . . . . . . . . . . 13
3.6.2. Considerations for inter-datacenter SFCs . . . . . . 16
4. Drawbacks Of Existing Service Chaining Methods . . . . . . . 17
5. General Requirements . . . . . . . . . . . . . . . . . . . . 20
6. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 21
7. Contributors . . . . . . . . . . . . . . . . . . . . . . . . 21
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 21
9. Security Considerations . . . . . . . . . . . . . . . . . . . 21
10. References . . . . . . . . . . . . . . . . . . . . . . . . . 22
10.1. Normative References . . . . . . . . . . . . . . . . . . 22
10.2. Informative References . . . . . . . . . . . . . . . . . 22
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