Re: [Monami6] Simultaneous location in home and foreign

[Ryuji Wakikawa <[e-mail]>]

At Fri, 02 Dec 2005 09:38:57 +0800,
Benjamin Koh wrote:
> 
> Hi!
> 
> Replies inline.
> 
> >  > I am concerned about the issue which is described in 6.2.3
> >  > (Simultaneous location in home and foreign networks) of
> >  > draft-montavont-mobileip-multihoming-pb-statement-05.txt.
> >  > In order to achieve the goals of Monami6. even if when a MN is
> >  > connected to both Home and Foreign networks, I think that a 
> >  > HA should be 
> >  > able to be aware of the existence of multiple paths to the 
> >  > MN including 
> >  > the path to the MN's interface connected to the home network because
> >  > this is necessity for allowing the HA to initiate a change of 
> >  > forwarding destination.
> >  > 
> >  > With regard to this issue, one available method is that a MN creates 
> >  > CoA(home CoA) at a home network and assigns it to the interface
> >  > connected to the home network so that it can register it as new 
> >  > forwarding destination in addition to other forwarding destinations 
> >  > for the interfaces connected to a foreign network and also a HA can
> >  > maintain multiple paths to the MN. 
> >  > Any thoughts on this?
> > 
> > => I think it's an important issue and will definitely address it
> > in the final solution. However, I don't think we can/need to create a 
> > "home CoA". We might be able to get away with specifying in the signalling
> > that only the flows explicitly specified should be forwarded to the 
> > CoA, otherwise, they should be forwarded using normal routing. 
> 
> [BK]
> >From what I understand in the MCoA draft, when the primary interface
> returns home, all bindings are deleted. In that case how does the HA
> know to forward the traffic to a CoA rather than simply assume that the
> MN is at home (or can the HA even receive the incoming traffic assuming
> that it is
> not the default home router)?

There are two options in the current draft. See Appendix-B.
One is when MN returns home with primary interface. MN deletes all
bindings.  Second is when MN returns with non-primary IF. MN will
delete binding for the non-primary IF (if it's active on HA) and keeps
other binding.

Note that, if RO is used, MN can utilize multiple paths even if it is
at home.

regards,
ryuji

> Regards,
> Ben
> 
> > 
> > Hesham
> > 
> > 
> > 
> >  > 
> >  > Regards,
> >  > Keigo
> >  > 
> >  > 
> >  > 
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