[Fwd: Extensibility of draft-ietf-radext-filter-rules]

[Hannes Tschofenig <Hannes.Tschofenig@gmx.net>]

Resend since I never got an answer.

We have now written a solution for using the RADIUS filter rule document 
for usage with QoS.
Please take a look at:
http://www.ietf.org/internet-drafts/draft-ietf-dime-qos-attributes-00.txt

Ciao
Hannes


-------- Original Message --------
Subject: 	Extensibility of draft-ietf-radext-filter-rules
Date: 	Tue, 05 Jun 2007 21:10:44 +0200
From: 	Hannes Tschofenig <Hannes.Tschofenig@gmx.net>
To: 	'radext mailing list' <radiusext@ops.ietf.org>



Hi all,

I have a question regarding the extensibility of 
draft-ietf-radext-filter-rules.

The document states that there is a version field. Now, there is the 
question when and how you define new versions.

* Does every tiny extension demand a new version number?

* Since a new version number is just a new constant in the rule set and 
does not require a new AVP are there IANA actions associated with the 
definition of new extensions?

* Does an extension (e.g., a new action) then require the document 
author to copy-and-paste the entire ABNF with the enhancements or would 
it be more preferable to just place the modified snippet into a new 
document? What would you suggest?

For example, one could just put the following modified ip-filter-rule 
code snippet into a doc:

       ;IP Filter Rule
       ip-filter-rule =  ("permit" / "deny" / NEW-ACTION ) " "
                                                         ^^^^^^^^^^^^^^^
                         ("in" / "out" / "inout") " "
                         ("ip" / ip-proto) filter-body 
                         [" " ip-option] [" " log-rule]


Wouldn't it be necessary or useful to carry the version number also 
attached to the capability attribute from the NAS to the RADIUS server?

Ciao
Hannes


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