A One-way Delay Metric for IPPM (RFC2679)
Original Publication Date: 1999-Sep-01
Included in the Prior Art Database: 2005-May-22
Internet Society Requests For Comment (RFCs)
G. Almes: AUTHOR [+3]
This memo defines a metric for one-way delay of packets across Internet paths. It builds on notions introduced and discussed in the IPPM Framework document, RFC 2330 ; the reader is assumed to be familiar with that document.
Network Working Group G.
Request for Comments: 2679 S. Kalidindi
Category: Standards Track M. Zekauskas
Advanced Network & Services
A One-way Delay Metric for IPPM
1. Status of this Memo
specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state
and status of this protocol. Distribution of this memo is unlimited.
Copyright (C) The Internet Society (1999). All Rights Reserved.
defines a metric for one-way delay of packets across
Internet paths. It builds on notions introduced and discussed in the
IPPM Framework document, RFC 2330 ; the reader is assumed to be
familiar with that document.
This memo is
intended to be parallel in structure to a companion
document for Packet Loss ("A One-way Packet Loss Metric for IPPM")
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 .
Although RFC 2119 was written with protocols in mind, the key words
are used in this document for similar reasons. They are used to
ensure the results of measurements from two different implementations
are comparable, and to note instances when an implementation could
perturb the network.
The structure of the memo is as follows:
+ A 'singleton' analytic metric, called
be introduced to measure a single observation of one-way delay.
Almes, et al. Standards Track [Page 1]
RFC 2679 A One-way Delay Metric for IPPM September 1999
+ Using this singleton metric, a 'sample', called Type-P-One-way-
Delay-Poisson-Stream, will be introduced to measure a sequence of
singleton delays measured at times taken from a Poisson process.
+ Using this sample, several 'statistics' of
the sample will be
defined and discussed.
from singleton to sample to statistics, with clear
separation among them, is important.
technical term from the IPPM Framework document is first
used in th...