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Re: [dispatch] New draft: draft-holmberg-dispatch-received-realm-00

Victor Pascual Avila <victor.pascual.avila@gmail.com> Thu, 25 June 2015 08:22 UTC

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Date: Thu, 25 Jun 2015 10:22:05 +0200
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From: Victor Pascual Avila <victor.pascual.avila@gmail.com>
To: "Dawes, Peter, Vodafone Group" <Peter.Dawes@vodafone.com>
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Subject: Re: [dispatch] New draft: draft-holmberg-dispatch-received-realm-00
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+1

On Thu, Jun 11, 2015 at 2:50 PM, Dawes, Peter, Vodafone Group <
Peter.Dawes@vodafone.com> wrote:

>  Thanks Christer,
>
> I would like to see this draft progress, I think it describes
> functionality that is needed. I have other comments and questions on the
> text but they can be raised later.
>
>
>
> Regards,
>
> Peter
>
>
>
> *From:* Christer Holmberg [mailto:christer.holmberg@ericsson.com]
> *Sent:* 10 June 2015 16:20
> *To:* Dawes, Peter, Vodafone Group; dispatch@ietf.org
> *Subject:* RE: New draft: draft-holmberg-dispatch-received-realm-00
>
>
>
> Hi Peter,
>
>
>
> Thanks for your comments! See inline.
>
>
>
> > I agree that it is useful for a (transit) network to know which network
> a request arrived from, as this
>
> > draft argues. But isn’t this information to be in the Via header field
> already in the entry before the
>
> > transit network? The draft mentions that inter-operator identifier
> cannot be used but I think the
>
> >draft should expand on why a new header field parameter is needed.
>
>
>
> Via headers may contain IP addresses, and they cannot always be used to
> identify the network. Also, the consumer of the information would have to
> scan through the Via headers, and figure out which belongs to the consumer
> network and which belongs to the adjacent network.
>
>
>
> The purpose of the identifier is to have an explicit indicator, which
> prevents such scanning etc.
>
>
>
> I try to explain that in the draft, but maybe more text is needed :)
>
>
>
> Regards,
>
>
>
> Christer
>
>
>
>
>
> *From:* dispatch [mailto:dispatch-bounces@ietf.org
> <dispatch-bounces@ietf.org>] *On Behalf Of *Christer Holmberg
> *Sent:* 08 June 2015 20:15
> *To:* dispatch@ietf.org
> *Subject:* [dispatch] New draft: draft-holmberg-dispatch-received-realm-00
>
>
>
> Hi,
>
>
>
> I’ve submitted a new draft to dispatch:
> draft-holmberg-dispatch-received-realm-00. The draft defines a new Via
> header field parameter, “received-realm”, which network entry entities can
> insert in order to inform other entities in the network from which network
> the request was received.
>
>
>
> Previous versions of the draft have been submitted to SIPCORE, but I was
> advised by the SIPCORE chairs to submit it to DISPATCH.
>
>
>
> Compared to previous versions, there is a technical change: the entity
> which inserts a parameter also calculates a HMAC value, which is inserted
> together with the network value.
>
>
>
> Regards,
>
>
>
> Christer
>
> _______________________________________________
> dispatch mailing list
> dispatch@ietf.org
> https://www.ietf.org/mailman/listinfo/dispatch
>
>


-- 
Victor Pascual Ávila

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