Network Working Group N. Duffield, Ed.
Request for Comments: 5474 AT&T Labs - Research
Category: Informational D. Chiou
University of Texas
B. Claise
Cisco Systems, Inc.
A. Greenberg
Microsoft
M. Grossglauser
EPFL & Nokia
J. Rexford
Princeton University
March 2009
A Framework for Packet Selection and Reporting
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Duffield, et al. Informational [Page 1]RFC 5474 Packet Selection and Reporting March 2009Abstract
This document specifies a framework for the PSAMP (Packet SAMPling)
protocol. The functions of this protocol are to select packets from
a stream according to a set of standardized Selectors, to form a
stream of reports on the selected packets, and to export the reports
to a Collector. This framework details the components of this
architecture, then describes some generic requirements, motivated by
the dual aims of ubiquitous deployment and utility of the reports for
applications. Detailed requirements for selection, reporting, and
exporting are described, along with configuration requirements of the
PSAMP functions.
Table of Contents
1. Introduction ....................................................4
2. PSAMP Documents Overview ........................................4
3. Elements, Terminology, and High-Level Architecture ..............5
3.1. High-Level Description of the PSAMP Architecture ...........5
3.2. Observation Points, Packet Streams, and Packet Content .....5
3.3. Selection Process ..........................................6
3.4. Reporting ..................................................7
3.5. Metering Process ...........................................8
3.6. Exporting Process ..........................................8
3.7. PSAMP Device ...............................................9
3.8. Collector ..................................................9
3.9. Possible Configurations ....................................9
4. Generic Requirements for PSAMP .................................11
4.1. Generic Selection Process Requirements ....................11
4.2. Generic Reporting Requirements ............................12
4.3. Generic Exporting Process Requirements ....................12
4.4. Generic Configuration Requirements ........................13
5. Packet Selection ...............................................13
5.1. Two Types of Selectors ....................................13
5.2. PSAMP Packet Selectors ....................................14
5.3. Selection Fraction Terminology ............................17
5.4. Input Sequence Numbers for Primitive Selectors ............18
5.5. Composite Selectors .......................................19
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