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From: Juergen Quittek <Quittek@nw.neclab.eu>
To: Dan Romascanu <dromasca@avaya.com>, <iesg-secretary@ietf.org>,
	IETF PSAMP Working Group <psamp@ietf.org>
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Dear Dan and dear IESG Secretary,

Below please find the write up for draft-ietf-psamp-info-08.
I think the draft is ready for forwarding to the IESG for publication.

Best regards,

    Juergen
-- 
Juergen Quittek        quittek@nw.neclab.eu        Tel: +49 6221 4342-115
NEC Europe Limited,    Network Laboratories        Fax: +49 6221 4342-155
Kurfuersten-Anlage 36, 69115 Heidelberg, Germany   http://www.netlab.nec.de
Registered Office: NEC House, 1 Victoria Road, London W3 6BL, UK
Registered in England 2832014

==========================================================================


Write-up for draft-ietf-psamp-info-08
=====================================

   (1.a)  Who is the Document Shepherd for this document?  Has the
          Document Shepherd personally reviewed this version of the
          document and, in particular, does he or she believe this
          version is ready for forwarding to the IESG for publication?
          
Juergen Quittek is the document shepherd. He has reviewed it personally
and believes that this version is ready for forwarding to the IESG
for publication.

   (1.b)  Has the document had adequate review both from key WG members
          and from key non-WG members?  Does the Document Shepherd have
          any concerns about the depth or breadth of the reviews that
          have been performed?

The document had multiple individual reviews from key WG members.
The shepherd has no concern about the depth or breadth of the reviews.

   (1.c)  Does the Document Shepherd have concerns that the document
          needs more review from a particular or broader perspective,
          e.g., security, operational complexity, someone familiar with
          AAA, internationalization, or XML?

The document shepherd sees no need for an additional particular review.
The contained XML document is fully in line with the corresponding
XML document of the IPFIX information model. It has been validated by
the document shepherd.

   (1.d)  Does the Document Shepherd have any specific concerns or
          issues with this document that the Responsible Area Director
          and/or the IESG should be aware of?  For example, perhaps he
          or she is uncomfortable with certain parts of the document, or
          has concerns whether there really is a need for it.  In any
          event, if the WG has discussed those issues and has indicated
          that it still wishes to advance the document, detail those
          concerns here.  Has an IPR disclosure related to this document
          been filed?  If so, please include a reference to the
          disclosure and summarize the WG discussion and conclusion on
          this issue.

There is no such concern.

   (1.e)  How solid is the WG consensus behind this document?  Does it
          represent the strong concurrence of a few individuals, with
          others being silent, or does the WG as a whole understand and
          agree with it?

There is a strong consensus in the PSAMP WG as well as in the IPFIX WG
to publish this version of the document. There are no particular issues
in the document without strong consensus of both WGs.

   (1.f)  Has anyone threatened an appeal or otherwise indicated extreme
          discontent?  If so, please summarize the areas of conflict in
          separate email messages to the Responsible Area Director.  (It
          should be in a separate email because this questionnaire is
          entered into the ID Tracker.)

There was no appeal.

   (1.g)  Has the Document Shepherd personally verified that the
          document satisfies all ID nits?  (See
          http://www.ietf.org/ID-Checklist.html and
          http://tools.ietf.org/tools/idnits/.)  Boilerplate checks are
          not enough; this check needs to be thorough.  Has the document
          met all formal review criteria it needs to, such as the MIB
          Doctor, media type, and URI type reviews?  If the document
          does not already indicate its intended status at the top of
          the first page, please indicate the intended status here.

The WG shepherd checked for ID nits and validated the contained XML
document.  Also boilerplates have been checked.

   (1.h)  Has the document split its references into normative and
          informative?  Are there normative references to documents that
          are not ready for advancement or are otherwise in an unclear
          state?  If such normative references exist, what is the
          strategy for their completion?  Are there normative references
          that are downward references, as described in [RFC3967]?  If
          so, list these downward references to support the Area
          Director in the Last Call procedure for them [RFC3967].

One reference has been outdated since the document was submitted:
RFC 2434 has recently been obsoleted by RFC 5226. This should be fixed
after IETF last call. More references may be obsoleted by then.

   (1.i)  Has the Document Shepherd verified that the document's IANA
          Considerations section exists and is consistent with the body
          of the document?  If the document specifies protocol
          extensions, are reservations requested in appropriate IANA
          registries?  Are the IANA registries clearly identified?  If
          the document creates a new registry, does it define the
          proposed initial contents of the registry and an allocation
          procedure for future registrations?  Does it suggest a
          reasonable name for the new registry?  See [RFC2434].  If the
          document describes an Expert Review process, has the Document
          Shepherd conferred with the Responsible Area Director so that
          the IESG can appoint the needed Expert during IESG Evaluation?

IANA considerations have been checked.

   (1.j)  Has the Document Shepherd verified that sections of the
          document that are written in a formal language, such as XML
          code, BNF rules, MIB definitions, etc., validate correctly in
          an automated checker?

Yes. The contained XML document was validated using Sun's
Multi-Schema XML Validator (MSV)

   (1.k)  The IESG approval announcement includes a Document
          Announcement Write-Up.  Please provide such a Document
          Announcement Write-Up.  Recent examples can be found in the
          "Action" announcements for approved documents.  The approval
          announcement contains the following sections:

Technical Summary

   This memo defines an information model for the Packet Sampling
   (PSAMP) protocol.  It is used by the PSAMP protocol for encoding
   sampled packet data and information related to the Sampling process.
   As the PSAMP protocol is based on the IPFIX protocol, this
   information model is an extension to the IPFIX information model.

Working Group Summary

   There is consensus in the WG to publish these documents.

Document Quality

   Several of the Information Elements defined in this document have
   already been implemented by academic as well as industrial institutions.
   But not all of them have been implemented and tested, yet.

Personnel

   Juergen Quittek is shepherding this document. Dan Romascanu is the
   responsible Area director.


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--NextPart

A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Packet Sampling Working Group of the IETF.


	Title           : A Framework for Packet Selection and Reporting
	Author(s)       : D. Chiou, et al.
	Filename        : draft-ietf-psamp-framework-13.txt
	Pages           : 37
	Date            : 2008-06-26

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.

A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-psamp-framework-13.txt

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Thread-Topic: AD evaluation of draft-ietf-psamp-info-08.txt
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From: "Romascanu, Dan (Dan)" <dromasca@avaya.com>
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Subject: [PSAMP] AD evaluation of draft-ietf-psamp-info-08.txt
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Please find below the AD evaluation of draft-ietf-psamp-info-08.txt. The
document has reached a fair state of maturity and stability, yet there
are a number of issues to be discussed and fixed, and probably a revised
ID will be needed before proceeding to IETF Last Call. Please find below
my questions and comments, grouped in Technical and Editorial. 

Technical

T1. E2. Section 7, second paragraph - it is not clear what  'special
information' means here, and thus what this paragraph is saying.  

T2. Section 10.2 specifies that for new selection methods 'configuration
parametr(s), along with the way to report it/them with an Options
Template, MUST be clearly specified. Should not this information be also
clearly specified for the initial set of eight selector algorithms
described in 8.2.4? Or maybe they are specified someplace else -
reference should be provided here if so.

T3. Section 8.2.4 

      New assignments for the PSAMP selection method will be
      administered by IANA, on a First Come First Served basis
      [RFC2434], subject to Expert Review [RFC2434].

The policy here should be Expert Review as per RFC5226, no need to
mention FCFS (actually you can't have two policies in place and what
numbers are allocated is the IANA business)

T4. Section 8.2.11 - why is Abstract Data type float64 needed? It looks
to me like float32 would be enough to express a probability value, or am
I missing something? 

T5. Section 9 - Security Considerations. It would be good to borrow as
is or with minimal adaptations the following two paragraphs from the
Security Considerations section of RFC5102:

   For example, exporting values of header fields may make attacks
   possible for the receiver of this information, which would otherwise
   only be possible for direct observers of the reported Flows along the
   data path.

   The underlying protocol used to exchange the information described
   here must therefore apply appropriate procedures to guarantee the
   integrity and confidentiality of the exported information.  Such
   protocols are defined in separate documents, specifically the IPFIX
   protocol document [RFC5101].

T6. Section 10.2 

   New assignments for the PSAMP selection method will be administered
   by IANA, on a First Come First Served basis [RFC2434], subject to
   Expert Review [RFC2434].  

Same comment as in T3, the policy should be just Expert Review as per
RFC5226



Editorial

E1. T2. [RFC2404] was obsoleted and replaced by [RFC5226] - make the
change in the references and all over the document. 

E2. It should be added in Section 5 that the documents uses the Data
Types described in Section 3.1 of [RFC5102]

E3. Section 8.2.4 - s/The selectorAlgorithm registry is maintained by
IANA and can be updated as long as specifications/The selectorAlgorithm
registry is maintained by IANA and can be updated when specifications/

E4. Section 8.2.6 - s/A value of 100 means that the next interval starts
after 100 packets (which are not sampled) when the current
"samplingPacketInterval" is over./A value of 100 means that the next
interval starts 100 packets (which are not sampled) after the current
"samplingPacketInterval" is over./

E5. Section 8.2.8 - s//A value of 100 means that the next interval
starts after 100 packets (which are not sampled) when the current
"samplingTimeInterval" is over./A value of 100 means that the next
interval starts 100 packets (which are not sampled) after the current
"samplingTimeInterval" is over./

Regards,

Dan


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Subject: [PSAMP] psamp-protocol: Packet Records specific term in PSAMP?
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Dear Benoit, all,

I fell over the following section in psamp-protocol:


4.2 Protocol Point of View

   Concerning the protocol, the major difference between IPFIX and PSAMP
   is that the IPFIX protocol exports Flow Records while the PSAMP
   protocol exports Packet Records.


Words with capitalized first letter are usually specific terms. However,
Packet Records does not appear in the terminology section.

Is "Packet Record" considered as a specific term or not?

Regards,
Gerhard

--=20
Dipl.-Ing. Gerhard M=FCnz
Computer Networks and Internet
Wilhelm Schickard Institute for Computer Science
University of Tuebingen
Sand 13 (Room B309), D-72076 Tuebingen, Germany
Phone:  +49 7071 29-70534       Fax: +49 7071 29-5220
E-mail: muenz@informatik.uni-tuebingen.de
WWW:    http://net.informatik.uni-tuebingen.de/~muenz


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