Re: 6MAN WG Adoption Call: draft-nordmark-6man-rs-refresh-01

[Lorenzo Colitti <[e-mail]>]

On Sat, Mar 28, 2015 at 12:34 AM, Bob Hinden <[e-mail]> wrote:

>         Title           : IPv6 Neighbor Discovery Optional Unicast RS/RA
> Refresh
>

All,

I think the root of my objections to this draft is that it proposes what is
in effect a substantial change to the current configuration model in IPv6
networks without saying so explicitly.

Currently, we have an easy-to understand, easy-to-reason-about model:
periodic RAs periodically notify everyone on link of the current
configuration information, and nodes that don't want to wait for such
periodic configuration information can solicit said information by sending
a request.

With this document, it's not clear what model is proposed.

It seems to me that this document is proposing a model where there are no
periodic RAs being sent. That's something that can be proposed, but if so,
we need to carefully evaluate the implications to the architecture, and how
switching to such a model affects the properties of the model we currently
have. We also need to make sure we understand how that model works for
hosts that a) don't support either resilient RS or this draft, b) support
resilient RS but not this draft.

If I am incorrect and the document is not proposing such a model, then it
should not mention this as a possibility. But then we need to understand
where the power savings are.

Cheers,
Lorenzo