a question about Analysis of Multihoming in Mobile IPv6

 
 > 
 > In my opinion, i think it's to say that some/all
interfaces 
 > of a MN may have
 > the same HA and HoA. For instance, you can image a MN
have 
 > both WLAN and
 > WCDMA interface, and the WLAN and WCDMA access
services are 
 > both provided by
 > the same Operator. Thus the MN's interface on the
WLAN and 
 > interface on the
 > WCDMA network may use the same HA and HoA provided by
the 
 > same Operator. 

=> Correction, there is no link between the operator and
the HoA
or the HA. whether different access networks belong to the
same operator
or not, is not relevant to the number of HoAs that a MN
might have. 

To answer the original question, IPv6 allows any node to
have multiple
addresses and associate them with the same interface. So
whether the MN
has one HoA or several makes no statement about the number
of interfaces

that it has. 

Hesham




An
 > other scenario is that no matter how many access 
 > capabilities the MN has,
 > the Mobile IP, as a service, is provided by one
operator.
 > Any way, the key point is that multiple interfaces
only 
 > imply that the MN
 > has multiple CoA on each interface( if the interface
is 
 > active), not the
 > HoA.
 > 
 > 
 > -----Original Message-----
 > From: Sam Xia [mailtoiazho
ngqihuawei.com] 
 > Sent: Friday, April 14, 2006 3:42 PM
 > To: monami6ietf.org
 > Subject: [Monami6] a question about Analysis of
Multihoming 
 > in Mobile IPv6
 > 
 > 
 > Hello, everyone,
 >           I am confused about a sentence in Analysis
of 
 > Multihoming in
 > Mobile IPv6. 
 > The sentence is "The fact that a mobile node has
multiple 
 > interfaces does
 > not 
 > imply that it has multiple HoAs and vice-versa"
and located 
 > at the last
 > paragragh on page 10.
 >           I think one interface should have a
corresponding 
 > address or more.
 > So, if a mobile node is in its home, each of its
interfaces 
 > has a address at
 > least.
 > 
 > Anyone can give me the detailed explaination or a
scenario? Thanks.
 > 
 > 
 > 
 > _______________________________________________
 > Monami6 mailing list
 > Monami6ietf.org
 > https:
//www1.ietf.org/mailman/listinfo/monami6
 > 
 > 
 > _______________________________________________
 > Monami6 mailing list
 > Monami6ietf.org
 > https:
//www1.ietf.org/mailman/listinfo/monami6
 > 

_______________________________________________
Monami6 mailing list
Monami6ietf.org
https:
//www1.ietf.org/mailman/listinfo/monami6

Hi Hesham,


El 19/04/2006, a las 21:30, Soliman, Hesham escribió:

>
>>
>> In my opinion, i think it's to say that some/all
interfaces
>> of a MN may have
>> the same HA and HoA. For instance, you can image a
MN have
>> both WLAN and
>> WCDMA interface, and the WLAN and WCDMA access
services are
>> both provided by
>> the same Operator. Thus the MN's interface on the
WLAN and
>> interface on the
>> WCDMA network may use the same HA and HoA provided
by the
>> same Operator.
>
> => Correction, there is no link between the operator
and the HoA
> or the HA. whether different access networks belong to
the same 
> operator
> or not, is not relevant to the number of HoAs that a MN
might have.
>

agree, multiple operators in the access network don't
affect the number 
of hoas

but, if a MN has multiple HAs served by different ISPs, then
it must 
have multiple HoAs, right?

(this would be so, because since it would have different
HAs, in 
different Home Networks and since they are served by
differetn ISPs, 
they need to use differetn PA blocks)

In other words, the operator of the access netwrok has no
influence in 
the number of Hoas, but the ISPs of the HAs/Home networks
has a direct 
impact in the number of HoAs, agree?


> To answer the original question, IPv6 allows any node
to have multiple
> addresses and associate them with the same interface.
So whether the MN
> has one HoA or several makes no statement about the
number of 
> interfaces
>
> that it has.
>

indeed, there are other combinations, where there is a
single ISP 
serving all the HAs, that may result in multiple HoAs for
other 
reasons...

regards, marcelo


> Hesham
>
>
>
>
> An
>> other scenario is that no matter how many access
>> capabilities the MN has,
>> the Mobile IP, as a service, is provided by one
operator.
>> Any way, the key point is that multiple interfaces
only
>> imply that the MN
>> has multiple CoA on each interface( if the
interface is
>> active), not the
>> HoA.
>>
>>
>> -----Original Message-----
>> From: Sam Xia [mailtoiazho
ngqihuawei.com]
>> Sent: Friday, April 14, 2006 3:42 PM
>> To: monami6ietf.org
>> Subject: [Monami6] a question about Analysis of
Multihoming
>> in Mobile IPv6
>>
>>
>> Hello, everyone,
>>           I am confused about a sentence in
Analysis of
>> Multihoming in
>> Mobile IPv6.
>> The sentence is "The fact that a mobile node
has multiple
>> interfaces does
>> not
>> imply that it has multiple HoAs and
vice-versa" and located
>> at the last
>> paragragh on page 10.
>>           I think one interface should have a
corresponding
>> address or more.
>> So, if a mobile node is in its home, each of its
interfaces
>> has a address at
>> least.
>>
>> Anyone can give me the detailed explaination or a
scenario? Thanks.
>>
>>
>>
>> _______________________________________________
>> Monami6 mailing list
>> Monami6ietf.org
>> https:
//www1.ietf.org/mailman/listinfo/monami6
>>
>>
>> _______________________________________________
>> Monami6 mailing list
>> Monami6ietf.org
>> https:
//www1.ietf.org/mailman/listinfo/monami6
>>
>
> _______________________________________________
> Monami6 mailing list
> Monami6ietf.org
> https:
//www1.ietf.org/mailman/listinfo/monami6
>


_______________________________________________
Monami6 mailing list
Monami6ietf.org
https:
//www1.ietf.org/mailman/listinfo/monami6

Marcelo,


>but, if a MN has multiple HAs served by different ISPs,
then it must 
>have multiple HoAs, right?
>
>(this would be so, because since it would have different
HAs, in 
>different Home Networks and since they are served by
differetn ISPs, 
>they need to use differetn PA blocks)
>
>In other words, the operator of the access netwrok has
no influence in 
>the number of Hoas, but the ISPs of the HAs/Home
networks has a direct 
>impact in the number of HoAs, agree?

I essentially agree with this, with one small comment. 
There probably
be some aggregators who provide a HA, aggregating a number
of ISPs.

John

_______________________________________________
Monami6 mailing list
Monami6ietf.org
https:
//www1.ietf.org/mailman/listinfo/monami6

El 20/04/2006, a las 6:04, <john.loughneynokia.com> escribió:

> Marcelo,
>
>
>> but, if a MN has multiple HAs served by different
ISPs, then it must
>> have multiple HoAs, right?
>>
>> (this would be so, because since it would have
different HAs, in
>> different Home Networks and since they are served
by differetn ISPs,
>> they need to use differetn PA blocks)
>>
>> In other words, the operator of the access netwrok
has no influence in
>> the number of Hoas, but the ISPs of the HAs/Home
networks has a direct
>> impact in the number of HoAs, agree?
>
> I essentially agree with this, with one small comment. 
There probably
> be some aggregators who provide a HA, aggregating a
number of ISPs.
>

I am not sure how this would work...
Are you assuming that there is an address blosk assigned to
the 
aggregators?
or the HoAs belong to one of the ISPs address blocks?

regards, marcelo


> John
>
> _______________________________________________
> Monami6 mailing list
> Monami6ietf.org
> https:
//www1.ietf.org/mailman/listinfo/monami6
>


_______________________________________________
Monami6 mailing list
Monami6ietf.org
https:
//www1.ietf.org/mailman/listinfo/monami6