[apps-discuss] APPSDIR review of draft-claise-export-application-info-in-ipfix-05

"Jiankang YAO" <yaojk@cnnic.cn> Fri, 20 April 2012 02:03 UTC

Message-ID: <C0E11F4B11154B1A8B40374C1E55C65E@LENOVO47E041CF>
From: Jiankang YAO <yaojk@cnnic.cn>
To: apps-discuss@ietf.org, bclaise@cisco.com, paitken@cisco.com, nirbd@cisco.com
Date: Fri, 20 Apr 2012 10:03:48 +0800
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Subject: [apps-discuss] APPSDIR review of draft-claise-export-application-info-in-ipfix-05
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I have been selected as the Applications Area Directorate reviewer
for this draft (for background on AppsDir, please see
http://trac.tools.ietf.org/area/app/trac/wiki/ApplicationsAreaDirectorate ).

Please resolve these comments along with any other Last Call comments
you may receive. Please wait for direction from your document
shepherd or AD before posting a new version of the draft.

Document: draft-claise-export-application-info-in-ipfix-05
Title: Export of Application Information in IPFIX
Reviewer: Jiankang Yao
Review Date: April 20, 2012

Summary: This document is almost ready for publication as a Informational RFC.

This draft specifies an extension to the IPFIX information model specified in [RFC5102] to export application
information.

Minor issue:

In Section 6:

6. Application Id Examples................................. 21
6.1. Example 1: Layer 2 Protocol........................ 21
6.2. Example 2: Standardized IANA Layer 3 Protocol...... 22
6.3. Example 3: Proprietary Layer 3 Protocol............ 23
6.4. Example 4: Standardized IANA Layer 4 Port.......... 25
6.5. Example 4: Layer 7 Application..................... 26
6.6. Example: port Obfuscation.......................... 28
6.7. Example: Application Mapping Options Template...... 29
6.8. Example: Attributes Values Options Template Record. 30

Comments : This section is all about examples, covering 10 pages. I suggest to move it to the appendix of this document since it does not specify anything.

Discussion issue:

In section 2
"
Application could be defined at different OSI layers, from
layer 2 to layer 7. For example: Link Layer Distribution
Protocol (LLDP) [LLDP] is layer 2 application, ICMP is layer
3 application [IANA-PROTO], HTTP is layer 4 application
[IANA-PORTS], and skype is layer 7. "

Comments: From my understanding, HTTP is a kind of layer 7 application based on OSI, but it can be identified in layer 4.
If my understanding is correct, I suggest to tune the text to the following:

"
Application could be identified at different OSI layers, from
layer 2 to layer 7. For example: Link Layer Distribution
Protocol (LLDP) [LLDP] can be identified in layer 2, ICMP is can be identified in layer 3
[IANA-PROTO], HTTP can be identified in layer 4 [IANA-PORTS], and skype can be identified in layer7. "

In the rest of document, it need to be tuned accordingly too.

Nits:

Section6.5. title: Example 4: Layer 7 Application

Change it to "Example 5: Layer 7 Application" since section 6.4 title is " Example 4: Standardized IANA Layer 4 Port"?

Jiankang Yao

[apps-discuss] APPSDIR review of draft-claise-exp… Jiankang YAO
Re: [apps-discuss] APPSDIR review of draft-claise… Barry Leiba
Re: [apps-discuss] APPSDIR review of draft-claise… Benoit Claise
Re: [apps-discuss] APPSDIR review of draft-claise… Peter Saint-Andre
Re: [apps-discuss] APPSDIR review of draft-claise… Murray S. Kucherawy
Re: [apps-discuss] APPSDIR review of draft-claise… Benoit Claise
Re: [apps-discuss] APPSDIR review of draft-claise… Barry Leiba