Network Service Header (NSH) Encapsulation for In-situ OAM (IOAM) Data
draft-ietf-sfc-ioam-nsh-01
SFC F. Brockners
Internet-Draft S. Bhandari
Intended status: Standards Track V. Govindan
Expires: September 12, 2019 C. Pignataro
Cisco
H. Gredler
RtBrick Inc.
J. Leddy
Comcast
S. Youell
JPMC
T. Mizrahi
Huawei Network.IO Innovation Lab
D. Mozes
P. Lapukhov
Facebook
R. Chang
Barefoot Networks
March 11, 2019
Network Service Header (NSH) Encapsulation for In-situ OAM (IOAM) Data
draft-ietf-sfc-ioam-nsh-01
Abstract
In-situ Operations, Administration, and Maintenance (IOAM) records
operational and telemetry information in the packet while the packet
traverses a path between two points in the network. This document
outlines how IOAM data fields are encapsulated in the Network Service
Header (NSH).
Status of This Memo
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provisions of BCP 78 and BCP 79.
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material or to cite them other than as "work in progress."
Brockners, et al. Expires September 12, 2019 [Page 1]
Internet-Draft NSH encapsulation for In-situ OAM March 2019
This Internet-Draft will expire on September 12, 2019.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Conventions . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. IOAM data fields encapsulation in NSH . . . . . . . . . . . . 3
4. Considerations . . . . . . . . . . . . . . . . . . . . . . . 5
4.1. Discussion of the encapsulation approach . . . . . . . . 5
4.2. IOAM and the use of the NSH O-bit . . . . . . . . . . . . 6
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 6
6. Security Considerations . . . . . . . . . . . . . . . . . . . 7
7. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 7
8. References . . . . . . . . . . . . . . . . . . . . . . . . . 7
8.1. Normative References . . . . . . . . . . . . . . . . . . 7
8.2. Informative References . . . . . . . . . . . . . . . . . 8
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 8
1. Introduction
In-situ OAM (IOAM), as defined in [I-D.ietf-ippm-ioam-data], records
OAM information within the packet while the packet traverses a
particular network domain. The term "in-situ" refers to the fact
that the OAM data is added to the data packets rather than is being
sent within packets specifically dedicated to OAM. This document
defines how IOAM data fields are transported as part of the Network
Service Header (NSH) [RFC8300] encapsulation for the Service Function
Chaining (SFC) [RFC7665]. The IOAM data fields are defined in
[I-D.ietf-ippm-ioam-data]. An implementation of IOAM which leverages
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