The IESG has approved the following document: - 'Packet Sampling (PSAMP) Protocol Specifications ' <draft-ietf-psamp-protocol-09.txt> as a Proposed Standard This document is the product of the Packet Sampling Working Group. The IESG contact persons are Dan Romascanu and Ron Bonica. A URL of this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ietf-psamp-protocol-09.txt Technical Summary This document specifies the export of packet information from a Packet Sampling (PSAMP) Exporting Process to a PSAMP Collecting Process. For export of packet information the IP Flow Information eXport (IPFIX) protocol is used, as both the IPFIX and PSAMP architecture match very well and the means provided by the IPFIX protocol are sufficient. The document specifies in detail how the IPFIX protocol is used for PSAMP export of packet information. Working Group Summary There is a solid WG consensus on the content of the draft. Protocol Quality The document was reviewed in the WG, and by key members of the IPFIX Working Group. An expert review was performed by Mark Allman from the TSV Directorate. Dan Romascanu reviewed the document on behalf of the IESG. Note to RFC Editor RFC Editor, Please make the following changes in the document prior to publication: 1) in Section 6.4.1 "Basic Packet Report", 2nd paragraph OLD: For each selected packet, the Packet Report SHOULD contain the following information: - the observationTimeMicroseconds Information Element NEW: For each selected packet, the Packet Report SHOULD contain a time-related Information Element that matches the Metering Process time accuracy. Typically, the observationTimeMicroseconds Information Element. Other possible Information Elements are the observationTimeSeconds, the observationTimeMilliseconds, or the observationTimeNanoseconds 2) in Section 5 "PSAMP Requirements versus the IPFIX Solution", first paragraph: OLD In the "Generic Requirements for PSAMP" section, [PSAMP-FMWK] describes some requirements that affect directly the PSAMP export protocol. NEW: The [PSAMP-FMWK] contains PSAMP protocol requirements throughout the document, with a special focus in the "Generic Requirements for PSAMP" section and subsections. 3) in Section 5 "PSAMP Requirements versus the IPFIX Solution", first paragraph OLD Finally, [PSAMP-FMWK] describes a series of requirements specifying the different Information Elements that MUST and SHOULD be reported to the Collector. Nevertheless IPFIX, being a generic export protocol, can export any Information Elements as long as they are described in the information model. So these requirements are mainly targeted for the [PSAMP-INFO] document. NEW: [PSAMP-FMWK] also describes a series of requirements specifying the different Information Elements that MUST and SHOULD be reported to the Collector. Nevertheless IPFIX, being a generic export protocol, can export any Information Elements as long as they are described in the information model. So these requirements are mainly targeted for the [PSAMP-INFO] document. 4) in Section 3.3.1 "IPFIX and PSAMP Processes", first paragraph OLD: The figure B indicates the sequence of the processes (Metering and Exporting) within the PSAMP Device. NEW: The figure B indicates the sequence of the IPFIX processes (Metering and Exporting) within the PSAMP Device. 5) in Section 3.3.2 "Packet Report, Packet Interpretation, and Data Record", first OLD: The PSAMP terminology speaks of Packet Report and Packet Interpretation, while the IPFIX terminology speaks of Data Record and (Option) Template Record. The PSAMP Packet Report, which comprises information about the observed packet, can be viewed as analogous to the IPFIX Data Record defined by a Template Record. The PSAMP Packet Interpretation, which comprises subsidiary information used for the interpretation of the Packet Reports, can be viewed as analogous to the IPFIX Data Record defined by an Option Template Record. NEW: The PSAMP terminology speaks of Packet Report and Packet Interpretation, while the IPFIX terminology speaks of Data Record and (Option) Template Record. The PSAMP Packet Report, which comprises information about the observed packet, can be viewed as analogous to the IPFIX Data Record defined by a Template Record. The PSAMP Report Interpretation, which comprises subsidiary information used for the interpretation of the Packet Reports, can be viewed as analogous to the IPFIX Data Record defined by an Option Template Record. This Option Template Record contains subsidiary information, applicable to the observed packet sent into the PSAMP Packet Report. 6) in Section 4.1 "Architecture Point of View", 4th paragraph OLD: Packet Sampling as described in the PSAMP framework [PSAMP-FMWK] covers only stage 1 of the IPFIX architecture with the packet classification replaced by packet record export. NEW: Packet Sampling as described in the PSAMP framework [PSAMP-FMWK] covers only stage 1 of the IPFIX architecture with the packet classification replaced by packet record export, while IPFIX covers also the stage 2, as it generates Flow Records out of the selected packets. _______________________________________________ IETF-Announce@ietf.org https://www.ietf.org/mailman/listinfo/ietf-announce
