Re: [Mobopts] Same MPA server for 2 access networks

Carlos Rodrigues <cmjr@iol.pt> Mon, 20 April 2009 18:07 UTC

Return-Path: <cmjr@iol.pt>
X-Original-To: mobopts@core3.amsl.com
Delivered-To: mobopts@core3.amsl.com
Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 1EB7B3A6F7E for <mobopts@core3.amsl.com>; Mon, 20 Apr 2009 11:07:11 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: 1.252
X-Spam-Level: *
X-Spam-Status: No, score=1.252 tagged_above=-999 required=5 tests=[AWL=2.455, BAYES_00=-2.599, MIME_QP_LONG_LINE=1.396]
Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 5+UnGN8VHIZ4 for <mobopts@core3.amsl.com>; Mon, 20 Apr 2009 11:07:10 -0700 (PDT)
Received: from bld10.srv.portugalmail.net (bld10.srv.portugalmail.net [195.170.168.137]) by core3.amsl.com (Postfix) with ESMTP id B8A023A6FB7 for <mobopts@irtf.org>; Mon, 20 Apr 2009 11:07:09 -0700 (PDT)
Received: from localhost (unknown [10.1.0.10]) by bld10.srv.portugalmail.net (Postfix) with ESMTP id E2D8A248842; Mon, 20 Apr 2009 19:08:07 +0100 (WEST)
X-Virus-Scanned: amavisd-new at srv.portugalmail.net
Received: from bld6.srv.portugalmail.net ([10.1.0.6]) by localhost (bld10.srv.portugalmail.net [10.1.0.10]) (amavisd-new, port 10024) with ESMTP id 5FcUVJ1A6tMS; Mon, 20 Apr 2009 19:08:07 +0100 (WEST)
Received: by bld6.srv.portugalmail.net (Postfix, from userid 30) id 5E168303777; Mon, 20 Apr 2009 19:08:06 +0100 (WEST)
Received: from warrior1.ipleiria.pt (warrior1.ipleiria.pt [193.137.239.251]) by webmail.iol.pt (Horde MIME library) with HTTP; Mon, 20 Apr 2009 19:08:06 +0100
Message-ID: <20090420190806.785ibjwkao44k88o@webmail.iol.pt>
X-Priority: 3 (Normal)
Date: Mon, 20 Apr 2009 19:08:06 +0100
From: Carlos Rodrigues <cmjr@iol.pt>
To: adutta@research.telcordia.com
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8; DelSp="Yes"; format="flowed"
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable
User-Agent: Internet Messaging Program (IMP) H3 (4.2-cvs)
Cc: mobopts@irtf.org
Subject: Re: [Mobopts] Same MPA server for 2 access networks
X-BeenThere: mobopts@irtf.org
X-Mailman-Version: 2.1.9
Precedence: list
List-Id: Mobility Optimizations <mobopts.irtf.org>
List-Unsubscribe: <http://www.irtf.org/mailman/listinfo/mobopts>, <mailto:mobopts-request@irtf.org?subject=unsubscribe>
List-Archive: <http://www.irtf.org/mail-archive/web/mobopts>
List-Post: <mailto:mobopts@irtf.org>
List-Help: <mailto:mobopts-request@irtf.org?subject=help>
List-Subscribe: <http://www.irtf.org/mailman/listinfo/mobopts>, <mailto:mobopts-request@irtf.org?subject=subscribe>
X-List-Received-Date: Mon, 20 Apr 2009 18:07:11 -0000

My question is more about a interworking scenario, more specifically  
inter-technology / intra-domain handover.
Like a 3G-Wifi interworking scenario... we need have these agents in  
each access network but we can have a centralized MPA server, right?

Carlos Rodrigues

----- Original Message -----
From: "Ashutosh Dutta" <adutta@research.telcordia.com>
To: "Carlos Rodrigues" <cmjr@iol.pt>
Cc: <mobopts@irtf.org>
Sent: Monday, April 20, 2009 6:52 PM
Subject: Re: [Mobopts] Same MPA server for 2 access networks


> Carlos,
>        As I just replied to your personal email to me, you can have  
> an AA (Authentication Agent) and CA (Configuration Agent) that are  
> two logical components of an MPA server in the core of the IMS  
> network. These two functions of course can coexist on the same  
> physical box if that is what you are asking for.
>
> Thanks
> Ashutosh
>
> Carlos Rodrigues wrote:
>> These agents need to stay with access network but I can have a  
>> centralized MPA server in the edge of IMS core, no?
>>
>> It is like DNS... we don't have several DNS servers to access to  
>> the Internet. It is done relay...
>>
>> Cheers,
>> Carlos Rodrigues (Computer Science BSc student)
>> ESTG - IPL
>> Leiria, Portugal
>>
>> ----- Original Message -----
>> From: "Ashutosh Dutta" <adutta@research.telcordia.com>
>> To: "Carlos Rodrigues" <cmjr@iol.pt>
>> Cc: <mobopts@irtf.org>
>> Sent: Monday, April 06, 2009 7:55 PM
>> Subject: Re: [Mobopts] Same MPA server for 2 access networks
>>
>>
>>> Carlos,
>>>         Let me repeat some of what I have said earlier to you.
>>> MPA server has several logical components, such as Authentication  
>>> Agent, Configuration Agent, Buffering Agent, Tunneling agent. Some  
>>> of these components could be aggregated for each access network,  
>>> such as Authentication Agent, and Configuration Agent. However,  
>>> part of Configuration Agent needs to stay with each access network  
>>> (e.g., DHCP relay). Buffering Agent and Tunneling Agent usually  
>>> stay at the edges with each access network.
>>>
>>> Thus, it is a design decision as to how you want to split the  
>>> functionality of the MPA server.
>>>
>>> Thanks
>>> Ashutosh
>>>
>>>
>>> Carlos Rodrigues wrote:
>>>> Hi!
>>>>
>>>> I have question about the number of MPA servers necessary in a  
>>>> interworking scenario.
>>>> If I have a scenario with 2 access networks (with different  
>>>> technologies), will need two CA, two AA and two tunneling agents  
>>>> and buffering agents if perform handover from both ways (A to B  
>>>> and B to A), right?
>>>>
>>>> First, I'm trying understand why (can give some tips?);
>>>> Second, it's not possible aggregate these 2 MPA server in a  
>>>> single entity? In a intra domain scenario makes sense.
>>>>
>>>> All help or support will be very helpful.
>>>>
>>>> Cheers,
>>>> Carlos Rodrigues (Computer Science BSc student)
>>>> ESTG - IPL
>>>> Leiria, Portugal
>>>>
>>>> ________________________________________________________________________________ Descubra as Soluções de Financiamento  
>>>> Cetelem.
>>>> Saiba mais em: http://www.iol.pt/correio/rodape.php?dst=0901272
>>>> _______________________________________________
>>>> Mobopts mailing list
>>>> Mobopts@irtf.org
>>>> http://www.irtf.org/mailman/listinfo/mobopts
>>>
>>
>> ________________________________________________________________________________ ANTECIPE A DEVOLUÇÃO DO SEU IRS e receba já o seu  
>> dinheiro...
>> I.R.Yes! da Capital Mais
>> http://www.iol.pt/correio/rodape.php?dst=0803281
>> _______________________________________________
>> Mobopts mailing list
>> Mobopts@irtf.org
>> http://www.irtf.org/mailman/listinfo/mobopts
>

________________________________________________________________________________
Financiamentos até €50.000. Simule já!
Saiba mais em: http://www.iol.pt/correio/rodape.php?dst=0901273