Re: [v6ops] Draft on DC migration to IPv6

["Diego R. Lopez" <[e-mail]>]

Hi Brian,

On 25 Jun 2012, at 14:49 , Brian E Carpenter wrote:
> I think the real problem is persuading the people who manage
> data centres that there is an economic and business incentive
> to support native IPv6 (as opposed to support native IPv6
> customers, which they probably understand). In some cases the
> arguments are technical perhaps (for example, if the load
> balancers use direct server return, making the servers dual
> stack will be the only reasonable approach). But in general
> just showing people how to design the technical solution is
> not enough for them to adopt it.

Indeed. But our point there is that providing people with a mechanism
to gauge their requirements and the proposals they get to satisfy them
can ease adoption.

> So while I understand the idea of your draft, it doesn't solve
> the problem of motivation.

Motivation can only come from a clear business case, and even enumerating
potential technical benefits (such as simplified load balancing, or better
overlay management) would not provide a definitive motivation. But
a better understanding of the choices should provide additional support
for particular motivations.

> Also I think it's unlikely that all
> DCs fit the single framework you describe - surely there is
> a wider range of scenarios? That's why the IETF in general
> does better when documenting individual components and solutions
> than when tackling frameworks.

We'll probably need to refine some of the maturity levels
(especially, level 2) as experience with migrations grows,
but I believe the general framework will stay applicable, as long as
there is not a really disruptive solution, of course.

> Also there should be a clarification of how this draft relates
> to draft-chkpvc-enterprise-incremental-ipv6.

Essentially, draft-chkpvc-enterprise-incremental-ipv6 tries to cover all
the networking aspects in an enterprise, providing general guidances for
different migration strategies. This draft focuses on the aspects related
to a datacenter and considered from the datacenter operator view, discussing
aspects related to datacenter network structure and multi-tenancy, often
(if not always) hidden to the customer (enterprise) view.

> Please refer to draft-carpenter-flow-label-balancing instead
> of draft-carpenter-v6ops-label-balance.

Will do. Thanks for the correction.

Be goode,

--
"Esta vez no fallaremos, Doctor Infierno"

Dr Diego R. Lopez
Telefonica I+D
http://people.tid.es/diego.lopez/

e-mail: [e-mail]
Tel:    [phone]
Mobile: [phone]
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