Re: I-D Action: draft-mishra-6man-variable-slaac-01.txt

[Gyan Mishra <[e-mail]>]

On Wed, Nov 4, 2020 at 3:51 AM Lorenzo Colitti <[e-mail]> wrote:

> On Tue, Nov 3, 2020 at 4:27 PM Gyan Mishra <[e-mail]> wrote:
>
>> It's hard to see why this draft is needed anyway. All that is needed
>>
>>> is to remove the "64 bit" statement from the addressing architecture,
>>> which the WG has consistently failed to reach consensus about.
>>>
>>
>>     Gyan>  This topic has come up many times over the years in heated
>> debate and this is another instance of that.  Agreed.  However, what makes
>> this instance different is that we have a major problem to be solved with
>> 4G  &  now as 5G is rolled out, segmentation is of utmost importance.  I
>> think in the past we have not had a major problem to be solved and so this
>> change being proposed did not gain traction,  but now as 5G becomes the
>> "norm" as it will compete directly with broadband that customers will start
>> using 5G in SOHO as well as other environments.   This is a major issue
>> that has come up with the ramp up for 5G IPv6 only deployments.
>>
>
> There is already a solution to this: use DHCPv6 PD on 5G networks. It's
> been supported since 3GPP release 10 several years ago.
>

   Agreed.  Fixed 5G broadband agreed would use the current wired broadband
DHCPv6 PD and would follow the BSOP RIPE-690 and I think would use the
recommended shorter prefix like a /56.  As fixed 5G would take advantage of
the value added at a premium network slicing capabilities for the front
haul and backhaul I can see Broadband 5G getting even a /48.  The issue
mentioned in the draft is related to 4G as well as 5G “mobile handsets” and
getting a /64 allocation which has been the standard which cannot be
segmented by the Subscriber customer end.  I don’t see the mobile handset
/64 prefix being going any shorter even for 5G.  For 5G the business driver
for larger allocation is for the value added network slicing capabilities
and the is relevant only for fixed broadband 5G which will replace wired
broadband.  Mobile handset 5G will not get network slicing capabilities as
it would use the front hall handset to tower backhaul tower to core Normal
RAN Radio VPN.  Compared to Fixed 5G broadband which would have
capabilities of being provisioned for high priority network slice Enhanced
VPN with resource isolation and dedicated resource characteristics.

> --

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*Gyan Mishra*

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