RE: New issue 16: No packets from other end?

Thanks Francis,

....for the answers. It does clarify the questions raised in
the original mail. I had some follow up comments/doubts, though:

Plurality of addresses can be communicated statically, but change
of address(es) need to be communicated dynamically, unless the
change is to a predetermined address(es) only.

In the dynamic scenario, a mobile host detecting a move or
a multihomed SGW detecting a network interface failure shall
notify the other end of the change. Are there any other "dynamic"
scenarios?

In the static or predetermined case, the end aware of the change
is required to notify the change to the other end? Or it is not
mandatory and the other end will try different prior known addresses?
We have to be clear in specifying what is a MUST and what is an option,
to guarantee interoperability. Do we have that already in the protocol?

Best,
Atul


> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]]
> Sent: Sunday, August 15, 2004 2:25 PM
> To: Sharma Atul (Nokia-ES/Boston)
> Cc: Eronen Pasi (Nokia-NRC/Helsinki); [email protected]
> Subject: Re: [Mobike] New issue 16: No packets from other end? 
> 
> 
>  In your previous mail you wrote:
> 
>    I needed some clarifications from MOBIKE veterans, before 
> expressing 
>    an opinion:
>    
>    What is the "other end" here?
> 
> => you are at one side, the other end is the other.
> 
>    The mobile host? or the multihoming SGW?
> 
> => you are narrowing the scope of MOBIKE without good reasons.
> MOBIKE supports one or both ends mobile and/or multi-homed.
>    
>    Who initiates the MOBIKE protocol? I would guess:
>    	(1) a mobile host after the move, needs to notify the 
> remote SGW of
>    	    its new address.
>    	(2) a multihoming SGW, upon detecting that one of its interfaces
>    	    (which was used to contact the mobile host) is down 
> and it needs 
>    	    to notify the mobile host of its new interface 
> address to be used.
>    
>    Are there any other scenarios of how MOBIKE can be initiated?
> 
> => many, for instance two multi-homed hosts, two multi-homed SGWs,
> a mobile SGW, a multi-homed host, etc.
> 
>    When would
>    we use the information that there is "lack of packets from 
> the other end",
>    to initiate the MOBIKE protocol?
>    
> => IMHO this is not in the scope of the MOBIKE protocol so I 
> can't give
> an answer. But if this end knows alternate peer addresses of 
> the other end,
> obviously to try them seems a good idea...
> 
> Regards
> 
> [email protected]
>