Re: [Roll] ticket - 172

On Mon, Aug 17, 2015 at 11:04 AM, Michael Richardson <mcr+ietf@sandelman.ca>
wrote:

>
> peter van der Stok <stokcons@xs4all.nl> wrote:
>     > It will be a nuisance if sets of nodes must be initialized with
> different
>     > Imin and Imax values to reach the same behaviour.
>     > The same problem will occur when a YANG (SMIv2) description is made
> for
>     > managing these parameters.
>
> I think that we expect that Imax is in units of multiple of Imin, which
> is in units of TUNIT.  Is that part at least, non-controversial?
>
> Imax is expressed as *doublings* of Imin, which is a tighter constraint
than "multiple".
It also represents an upper bound on the interval length.

See rule 5 of RFC 6206:

5.  When the interval I expires, Trickle doubles the interval length.
    If this new interval length would be longer than the time
    specified by Imax, Trickle sets the interval length I to be the
    time specified by Imax.

Regards, Kerry

    > Suggestion: write an ERRATA document for RFC6206 which then solves
>     > draft-ietf-roll-trickle-mcast-12 issue.
>
> I think that 6206 doesn't care what units are expressed internally.
> Do any math in 6206 depend upon an integer multiple relationship between
> Imin
> and Imax?
>
>
> --
> Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works
> IETF ROLL WG co-chair.    http://datatracker.ietf.org/wg/roll/charter/
>
>
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Re: [Roll] ticket - 172 - clarify units of trickle timers