Simple Two-Way Active Measurement Protocol Extensions for Performance Measurement on LAG
draft-li-ippm-stamp-on-lag-00
Network Working Group Z. Li
Internet-Draft China Mobile
Intended status: Standards Track M. Chen
Expires: August 23, 2021 Huawei
G. Mirsky
ZTE Corp.
February 19, 2021
Simple Two-Way Active Measurement Protocol Extensions for Performance
Measurement on LAG
draft-li-ippm-stamp-on-lag-00
Abstract
This document defines extensions to Simple Two-Way Active Measurement
Protocol (STAMP) to implement performance measurement on every member
link of a Link Aggregation Group (LAG). Knowing the measured metrics
of each member link of a LAG enables operators to enforce a
performance metric-based traffic steering policy across the member
links.
Requirements Language
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
"OPTIONAL" in this document are to be interpreted as described in
[RFC2119] [RFC8174] when, and only when, they appear in all capitals,
as shown here.
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This Internet-Draft will expire on August 23, 2021.
Li, et al. Expires August 23, 2021 [Page 1]
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Micro-Session on LAG . . . . . . . . . . . . . . . . . . . . 3
3. Micro-STAMP Session . . . . . . . . . . . . . . . . . . . . . 4
3.1. Micro-STAMP-Test . . . . . . . . . . . . . . . . . . . . 4
3.1.1. LAG Member Link ID TLV . . . . . . . . . . . . . . . 4
3.1.2. Micro-STAMP-Test Procedures . . . . . . . . . . . . . 5
4. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 6
5. Security Considerations . . . . . . . . . . . . . . . . . . . 6
6. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 6
7. References . . . . . . . . . . . . . . . . . . . . . . . . . 6
7.1. Normative References . . . . . . . . . . . . . . . . . . 6
7.2. Informative References . . . . . . . . . . . . . . . . . 7
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 7
1. Introduction
Link Aggregation Group (LAG), as defined in [IEEE802.1AX], provides
mechanisms to combine multiple physical links into a single logical
link. This logical link offers higher bandwidth and better
resiliency, because if one of the physical member links fails, the
aggregate logical link can continue to forward traffic over the
remaining operational physical member links.
Usually, when forwarding traffic over a LAG, a hash-based or similar
mechanism is used to load-balance the traffic across the LAG member
links. In some cases, the link delays of the member links are
different because they are over different transport paths. To
provide low delay service to time-sensitive traffic, we have to know
the link delay of each member link of a LAG and then steer traffic
accordingly. That requires a solution that could measure the
performance metrics of each member link of a LAG.
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