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Re: [Roll] Transit vs. Target in P DAO

Michael Richardson <mcr+ietf@sandelman.ca> Fri, 25 September 2020 22:46 UTC

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From: Michael Richardson <mcr+ietf@sandelman.ca>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
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Date: Fri, 25 Sep 2020 18:46:49 -0400
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Subject: Re: [Roll] Transit vs. Target in P DAO
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Rahul Jadhav <rahul.ietf@gmail.com> wrote:
    > But, wouldn't this mandate that only Global DODAG roots can initiate a
    > P-DAO request?
    > Isn't it currently possible for a local DODAG (with local
    > RPLInstanceID) root to initiate a P-DAO request? If yes, then the DAO
    > base object cannot be used as mentioned by you.

And what about p2p-rpl (RFC6997)?  Is there a place for P-DAO there?

Or maybe I should ask this differently:  doesn't P-DAO allow for cross-DODAG
routing, as arranged by the root?  A sort of PCE?  Does this essentially
eclipse the utility of p2p RPL?

Does this local/global issue affect this?

--
Michael Richardson <mcr+IETF@sandelman.ca>   . o O ( IPv6 IøT consulting )
           Sandelman Software Works Inc, Ottawa and Worldwide

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