Re: [Tsvwg] I-D ACTION:draft-ietf-tsvwg-addip-sctp-11.txt

Hi Michael,

sorry but if an INIT sender receives an INIT ack from a different Address
that can't be a problem?

br
/sal

Michael Tuexen <Michael.Tuexen@lurchi.franken.de> wrote:
Hi Sal,

you can just use the real address as the source address of the
INIT-ACK and list the destination address of the INIT in the
INIT-ACK.
So the COOKIE-ECHO should go to the real address.

After the handshake you could delete the address.

Please note that the intention of ADDIP is not mobility,
but allow for reconfiguration in long living associations
without interrupting the service.

Best regards
Michael

On Mar 1, 2005, at 14:50 Uhr, Salvatore Loreto wrote:

> Hi Michael,
>  
> my scenario is this,
> suppose I want start a session with a node belongto a Mobile IP 
> network, and this node moved to a foreign network...
> so now when the MN receives an INIT, I think insert in the INIT ACK 
> also a ASCONF chunk with the real address (it has in the foreign 
> network), should improve mobility delay.
>  
> br
> Sal
>
> Michael Tuexen wrote:
> Hi Sal,
>
> why not just use the correct addresses dring setup? If
> one of the addresses is not valid anymore it can not be
> used for DATA transfer, because it will not be verified.
>
> And the SCTP chunk authentication, which is now required
> for ASCONF/ASCONF-ACK chunks needs the 4 way handshake
> to establish a shared key. See
> http://www.ietf.org/internet-drafts/draft-tuexen-sctp-auth-chunk-03.txt
>
> Best regards
> Michael
>
> On Mar 1, 2005, at 9:20 Uhr, Salvatore Loreto wrote:
>
> > Hi all,
> >  
> > I've a question about addip:
> >  
> > why is it impossible change an association address during the four 
> way
> > handshaking ?
> >  
> > br
> > Sal
> >
> > 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 Transport Area Working Group Working
> > Group of the IETF.
> >
> > Title : Stream Control Transmission Protocol (SCTP) Dynamic Address
> > Reconfiguration
> > Author(s) : R. Stewart, et al.
> > Filename : draft-ietf-tsvwg-addip-sctp-11.txt
> > Pages : 35
> > Date : 2005-2-22
> >
> > This document describes extensions to the Stream Control Transmission
> > Protocol (SCTP) [RFC2960] that provides a method to reconfigure IP
> > address information on an existing association.
> >
> > A URL for this Internet-Draft is:
> > 
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