Re: [Mip4] FW: I-D ACTION:draft-tsirtsis-v4v6-mipv4-01.txt

[Henrik Levkowetz <henrik at levkowetz.com>]

Hi Vijay,

on 2006-04-21 03:47 Vijay Devarapalli said the following:
> Henrik Levkowetz wrote:
> 

...
>> As one example, let us take a MIPv4 enabled cell-phone which
>> provides connectivity for a IPv6 enabled laptop.  Why would
>> you deny the MIPv4 conduit the capability of transporting
>> IPv6 packets?
> 
> got it. the MIPv4 client is not being upgraded to
> IPv6, but the device connecting through it is being
> upgraded. this is a valid case where it might not
> be trivial to upgrade the MIPv4 client to MIPv6
> client. but is this the common case in an
> Enterprise? I expect laptops connecting directly to
> the Enterprise network instead of through cell
> phones. when the user is outside the Enterprise
> network, then the laptop might be connected to the
> Enterprise through a cell phone (through a cellular
> operator). but in this case MIPv4 might not be used.
> the MIP tunnel might be inside an IPsec tunnel.

More likely the MIP tunnel would go to the operator, while
any IPsec tunnel would be inside the MIP tunnel and go all
the way to the enterprise.


	Henrik


> Vijay
> 
>> 
>>>>>> And furthermore, upgrading the client in thousands or millions of
>>>>>> deployed low-end devices can hardly be considered 'trivial', even
>>>>>> if the software is available and will fit in the flash memory of
>>>>>> the device, which is not at all guaranteed.
>>>>> the clients are being upgraded for IPv6 services
>>>>> anyway. whats special about upgrading the clients
>>>>> from MIPv4 to MIPv6?
>>>> Nope.  Think a phone model which may have just enough flash for
>>>> MIPv4, but not enough flash for the additional IPsec and MIPv6
>>>> functionality.
>>> is this small device being upgraded to IPv6?
>>> IPsec is a MUST for IPv6.
>> 
>> See example above.
>> 
>> 	Henrik
>> 
> 
>

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