Re: [Int-area] Call for comment on draft-rahman-rtg-router-alert-considerations-02.txt

Hello Jukka,

On 29 Jul 2009, at 16:37, Jukka MJ Manner wrote:

>
> Hi,
>
> I'll repeat here my comment that I gave on the mic.
>
> 1. I believe the point of the draft is to say that you should not  
> use RAO end-to-end across the Internet.

yes, that is one of the points the draft is trying to make.
 From our conversation, I believe your specific suggestion would be  
that section 3.1 is generalized to say e2e RAO is problematic, whether  
for new e2e application/protocol or for existing application/protocol  
(while it currently only explicitly mentions this for new application/ 
protocol). Right?

> If you have a closely controlled environment, RAO is okey, provided  
> that you know what you are doing

Again, from conversation, you'd like section 2 to make that point  
irrespective of whether we're talking about existing or (potentially  
new) protocol/application. Right?

> (and this part is what the document is trying to tell, describe the  
> more or less well-knwon problems with RAO). Yet, to me the message  
> is a bit fuzzy and unclear.

I think addressing the previous points would probably make things  
clearer. Feel free to propose additional specific suggestions.

>
> 2. IPv6 hop-by-hop options have the same problems, I guess.
>

Agreed. Suresh's draft http://tools.ietf.org/html/draft-krishnan-ipv6-hopbyhop-03 
  was also brought to our attention. I believe it argues that exact  
point.

For the sake of closing the RAO issue asap, I liked the idea of just  
focusing on RAO, but if the WG wants to kill the "hop-by-hop option"  
bird at the same time, I suppose we could. Opinions?

Thanks

Francois

>
> Cheers,
> Jukka
>
> On Thu, 23 Jul 2009, Francois Le Faucheur IMAP wrote:
>
>> Hello,
>> The Routing, Transport and Internet area directors have agreed to  
>> move the
>> work on Router Alert option (that started in Routing Area) into the  
>> Internet
>> Area.
>> Therefore, we would appreciate feedback from this list on the new  
>> version
>> of draft-rahman-rtg-router-alert-considerations.
>> Thank you
>> Francois
>> Begin forwarded message:
>>
>>      From: Internet-Drafts@ietf.org
>> Date: 3 July 2009 19:15:02 CEDT
>> To: i-d-announce@ietf.org
>> Subject: I-D
>> Action:draft-rahman-rtg-router-alert-considerations-02.txt
>> Reply-To: internet-drafts@ietf.org
>> A New Internet-Draft is available from the on-line Internet-Drafts
>> directories.
>> Title           : IP Router Alert Considerations and Usage
>> Author(s)       : F. Le Faucheur
>> Filename        : draft-rahman-rtg-router-alert-considerations-02.txt
>> Pages           : 18
>> Date            : 2009-07-03
>> The IP Router Alert Option is an IP option that alerts transit
>> routers to more closely examine the contents of an IP packet.  RSVP,
>> PGM, IGMP/MLD and MRD are some of the protocols which make use of the
>> IP Router Alert option.  This document discusses security aspects,
>> common practices and usage guidelines around the use of the current
>> IP Router Alert option.  Specifically, it provides recommendations on
>> the use of Router Alert by new protocols, discusses controlled
>> environments where existing protocols depending on Router Alert can
>> be used effectively and discusses protection approaches for Service
>> Providers.  Finally it provides brief guidelines for Router Alert
>> implementation on routers.
>> A URL for this Internet-Draft is:
>> http://www.ietf.org/internet-drafts/draft-rahman-rtg-router-alert-considera
>> tions-02.txt
>> Internet-Drafts are also available by anonymous FTP at:
>> ftp://ftp.ietf.org/internet-drafts/
>> Below is the data which will enable a MIME compliant mail reader
>> implementation to automatically retrieve the ASCII version of the
>> Internet-Draft.
>> Content-Type: text/plain<BR>Content-ID:
>> &lt;2009-07-03101229.I-D@ietf.org&gt;<BR><BR>
>>      _______________________________________________
>>      I-D-Announce mailing list
>>      I-D-Announce@ietf.org
>>      https://www.ietf.org/mailman/listinfo/i-d-announce
>>      Internet-Draft directories: http://www.ietf.org/shadow.html
>>      or ftp://ftp.ietf.org/ietf/1shadow-sites.txt
>>