Re: [Roll] rplinfo

[Michael Richardson <[e-mail]>]

peter van der Stok <[e-mail]> wrote:
    >> There are two definitions perhaps.  RFC6550 says situations in which
    >> an RPL-aware node MUST join as a leaf node because it does not speak
    >> the correct MOP, or other situations.  But, it doesn't actually say
    >> what it means to be a leaf node.
    >>
    >> A leaf node is a node that join using Router Advertisements only.  A
    >> leaf node is what we normally have called a "host".  Only in the
    >> situation where it was an incompatible 6550 implementation would the
    >> leaf understand RPI.  There are potentially many leaf nodes that would
    >> join a LLN via RA, etc.

    > IMO it is good to make that clear in the document and explain the
    > difference between RA leaves and DODAG leaves

But, when an RPL aware node is forced into a leaf position (due to
incompatibility), it does so using RAs, etc. so it really has no effect
on the considerations.  A storing-mode only RPL node, upon encountering
a non-storing mode DODAG, might join as a leaf, but might *not* understand
RH3 headers.

So rather than explain that there is a difference, I think we should just
explain that they are leaves.

--
]               Never tell me the odds!                 | ipv6 mesh networks [
]   Michael Richardson, Sandelman Software Works        | network architect  [
]     [e-mail]  http://www.sandelman.ca/        |   ruby on rails    [



--
Michael Richardson <[e-mail]>, Sandelman Software Works
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