IPPM T. Zhou, Ed.
Internet-Draft G. Fioccola
Intended status: Standards Track Huawei
Expires: July 22, 2021 S. Lee
LG U+
M. Cociglio
Telecom Italia
W. Li
Huawei
January 18, 2021
Enhanced Alternate Marking Method
draft-zhou-ippm-enhanced-alternate-marking-06
Abstract
This document extends the IPv6 alternate marking option to provide
the enhanced capabilities.
Requirements Language
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in RFC 2119 [RFC2119].
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
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This Internet-Draft will expire on July 22, 2021.
Copyright Notice
Copyright (c) 2021 IETF Trust and the persons identified as the
document authors. All rights reserved.
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This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(https://trustee.ietf.org/license-info) in effect on the date of
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Data Fields Format . . . . . . . . . . . . . . . . . . . . . 2
3. Enhanced Alternate Marking capabilities . . . . . . . . . . . 3
4. Security Considerations . . . . . . . . . . . . . . . . . . . 4
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 4
6. References . . . . . . . . . . . . . . . . . . . . . . . . . 4
6.1. Normative References . . . . . . . . . . . . . . . . . . 4
6.2. Informative References . . . . . . . . . . . . . . . . . 4
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 4
1. Introduction
The Alternate Marking [RFC8321] and Multipoint Alternate Marking
[I-D.ietf-ippm-multipoint-alt-mark] define the Alternate Marking
technique that is an hybrid performance measurement method, per
[RFC7799] classification of measurement methods. This method is
based on marking consecutive batches of packets and it can be used to
measure packet loss, latency, and jitter on live traffic.
AltMark Option [I-D.ietf-6man-ipv6-alt-mark] applies the Alternate
Marking Method for IPv6 protocol, and defines Extension Header Option
to encode Alternate Marking Method for both Hop-by-Hop Options Header
and Destination Options Header.
While the AltMark Option implement the basic alternate marking
method, this document defines the extended data fields for the
AltMark Option and provides the enhanced capabilities.
It is worth mentioning that the enhanced capabilities are intended
for further use and are optional.
2. Data Fields Format
The following figure shows the data fields format for enhanced
alternate marking. This data is expected to be encapsulated to
specific transports.
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0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+---------------------------------------+-+-+-+-----------------+
| FlowMonID |L|D|R|R| NextHeader |
+---------------------------------------+-+-+-+-----------------+
| FlowMonID Ext |R|R|F|R| Len | R |
+---------------------------------------+-+-+-+-----------------+
| MetaInfo | R |
+---------------------------------------------------------------+
where:
o FlowMonID - Flow Monitoring Identification is the same as defined
in AltMark Option [I-D.ietf-6man-ipv6-alt-mark].
o L and D - Loss Flag and Delay Flag are the same as defined in
AltMark Option [I-D.ietf-6man-ipv6-alt-mark].
o NextHeader - Identify whether to carry the extended data fields.
o FlowMonID Ext - 20 bits unsigned integer. This used to extend the
FlowMonID to reduce the conflict when random allocation is applied
o R - Reserved for further use. This bit MUST be set to zero.
o F - Flow direction identification. F = 1, indicate the flow
direction is forward.
o Len - Length. It indicates the length of extension headers.
o MetaInfo - A 16 bits Bitmap to indicate more meta data attached
for the enhanced function.
3. Enhanced Alternate Marking capabilities
The extended data fields presented in the previous section can be
used for several uses. Some possible applications can be:
1. shortest marking periods of single marking method for thicker
packet loss measurements.
2. more dense delay measurements than double marking method (down to
each packet).
3. increase the entropy of flow monitoring identifier by extending
the size of FlowMonID.
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4. and so on.
4. Security Considerations
TBD
5. IANA Considerations
This document has no request to IANA.
6. References
6.1. Normative References
[I-D.ietf-ippm-multipoint-alt-mark]
Fioccola, G., Cociglio, M., Sapio, A., and R. Sisto,
"Multipoint Alternate Marking method for passive and
hybrid performance monitoring", draft-ietf-ippm-
multipoint-alt-mark-09 (work in progress), March 2020.
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119,
DOI 10.17487/RFC2119, March 1997,
<https://www.rfc-editor.org/info/rfc2119>.
[RFC7799] Morton, A., "Active and Passive Metrics and Methods (with
Hybrid Types In-Between)", RFC 7799, DOI 10.17487/RFC7799,
May 2016, <https://www.rfc-editor.org/info/rfc7799>.
[RFC8321] Fioccola, G., Ed., Capello, A., Cociglio, M., Castaldelli,
L., Chen, M., Zheng, L., Mirsky, G., and T. Mizrahi,
"Alternate-Marking Method for Passive and Hybrid
Performance Monitoring", RFC 8321, DOI 10.17487/RFC8321,
January 2018, <https://www.rfc-editor.org/info/rfc8321>.
6.2. Informative References
[I-D.ietf-6man-ipv6-alt-mark]
Fioccola, G., Zhou, T., Cociglio, M., Qin, F., and R.
Pang, "IPv6 Application of the Alternate Marking Method",
draft-ietf-6man-ipv6-alt-mark-02 (work in progress),
October 2020.
Authors' Addresses
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Tianran Zhou
Huawei
156 Beiqing Rd.
Beijing 100095
China
Email: zhoutianran@huawei.com
Giuseppe Fioccola
Huawei
Riesstrasse, 25
Munich 80992
Germany
Email: giuseppe.fioccola@huawei.com
Shinyoung Lee
LG U+
71, Magokjungang 8-ro, Gangseo-gu
Seoul
Republic of Korea
Email: leesy@lguplus.co.kr
Mauro Cociglio
Telecom Italia
Via Reiss Romoli, 274
Torino 10148
Italy
Email: mauro.cociglio@telecomitalia.it
Weidong Li
Huawei
156 Beiqing Rd.
Beijing 100095
China
Email: poly.li@huawei.com
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