Re: [v6ops] I-D Action: draft-ietf-v6ops-mobile-device-profile-17.txt - C_REC#9 464XLAT

[Alexandru Petrescu <[e-mail]>]

Le 13/02/2015 18:11, Heatley, Nick a écrit :
>> If the 464xlat/clat happened elsewhere than on the user terminal
>> (e.g. BAse Station) I think more of these terminals could be
>> accommodated, more business.
>
> Not possible in mobile architecture.

If it is not possible to have v4-v6 translation in the Base Station,
then it should be in the entity before it.  'PGW' mentioned?

> The mobile bearer (a tunnel) is between device, and PGW in the core
> network, because it is the device that is mobile. PGW assigns IP
> address to device, base station is just a relay.

In this case PGW (not the base station) should do translation.

I said 'base station' to refer to the cheap stations for femto-cell.
These run IP between an Ethernet cable and a 4G radio interface.
They're basically PCs easy to deploy.

It is easy to have many v4-v6 translation mechanisms on these PCs.

> For base station to take the role of CLAT means no seamless
> mobility.

Well, by deduction this implies that seamless mobility is possible only
if the end user implements CLAT.

On another hand, seamless mobility is also achieved by something else
which is called Mobile IP.  The end user in some cases prefers this
protocol over CLAT.

This Mobile IP protocol works fine when the cellular access is v4-only.
  Also, the Mobile IPv6 protocol works fine when the cellular access is
v6 only.  Finally, Mobile IPv4 and Mobile IPv6 implementations work fine
when the access is simultaneous v4 and v6.

There are a number of access networks (beyond cellular) which work fine
when the end user is Mobile IP.

This stops working fine when the access is v6-only with CLAT.

Alex

> -----Original Message----- From: Alexandru Petrescu
> [mailto:[e-mail]] Sent: 13 February 2015 16:13
> To: Heatley, Nick; [e-mail] Cc: [e-mail]
> Subject: Re: [v6ops] I-D Action:
> draft-ietf-v6ops-mobile-device-profile-17.txt - C_REC#9 464XLAT
>
> Le 13/02/2015 16:33, Heatley, Nick a écrit :
>>
>>
>> -----Original Message----- From: Alexandru Petrescu
>> [mailto:[e-mail]] Sent: 13 February 2015 14:35
>> To: Heatley, Nick; [e-mail] Cc: [e-mail]
>> Subject: Re: [v6ops] I-D Action:
>> draft-ietf-v6ops-mobile-device-profile-17.txt - C_REC#9 464XLAT
>>
>
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