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Re: [Dime] I-D Action: draft-ietf-dime-realm-based-redirect-05.txt

jouni korhonen <jouni.nospam@gmail.com> Mon, 16 July 2012 12:45 UTC

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From: jouni korhonen <jouni.nospam@gmail.com>
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To: Tom Taylor <tom.taylor.stds@gmail.com>
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Subject: Re: [Dime] I-D Action: draft-ietf-dime-realm-based-redirect-05.txt
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Tom,

10-15mins is definitely OK. I'd like to get the remaining issues
etc sorted out during Vancouver meeting. 

- Jouni

On Jul 16, 2012, at 2:43 PM, Tom Taylor wrote:

> The document has been updated according to the proposals I made last week, but I'm not sure I've gotten it right. Restricting redirection to servers meant fairly extensive changes. I think the issue is worth discussing in the meeting, and I'd be quite happy to roll back to using redirect servers if the consensus favours that.
> 
> It occurred to me that redirection need not necessarily disrupt existing sessions. It could just be applied to initial messages of a session. I added text that allowed an application incorporating realm-based redirection to specify which way to go.
> 
> I'm not tremendously happy with the following provision, added in response to a point raised by a reviewer:
> 
> o  If the request contains a Destination-Host AVP, the server MUST
>   set the 'E' bit in the answer and set the Result-Code AVP to
>   DIAMETER_UNABLE_TO_DELIVER.
> 
> This seems sub-optimal, since it doesn't allow the server to indicate that the whole realm is out of bounds.
> 
> Clearly this is going to need another WGLC because of the extent of the changes I've made. Could we have 15 minutes, or at least ten, to discuss issues with the draft at the meeting before we go any further?
> 
> Tom Taylor
> 
> On 15/07/2012 10:39 PM, internet-drafts@ietf.org wrote:
>> 
>> A New Internet-Draft is available from the on-line Internet-Drafts directories.
>>  This draft is a work item of the Diameter Maintenance and Extensions Working Group of the IETF.
>> 
>> 	Title           : Realm-Based Redirection In Diameter
>> 	Author(s)       : Tina Tsou
>>                           Ruibing Hao
>>                           Tom Taylor
>> 	Filename        : draft-ietf-dime-realm-based-redirect-05.txt
>> 	Pages           : 8
>> 	Date            : 2012-07-15
>> 
>> Abstract:
>>    The Diameter protocol allows a Diameter redirect agent to specify one
>>    or more individual hosts to which a Diameter message may be
>>    redirected by an upstream Diameter node.  However, in some
>>    circumstances an operator may wish to redirect messages to an
>>    alternate domain without specifying individual hosts.  This document
>>    specifies a mechanism by which this can be achieved.  New
>>    applications may incorporate this capability by reference to the
>>    present document.
>> 
> ...
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