[6tisch] [Errata Held for Document Update] RFC8180 (5539)

RFC Errata System <rfc-editor@rfc-editor.org> Thu, 13 January 2022 06:50 UTC

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Subject: [6tisch] [Errata Held for Document Update] RFC8180 (5539)
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The following errata report has been held for document update 
for RFC8180, "Minimal IPv6 over the TSCH Mode of IEEE 802.15.4e (6TiSCH) Configuration". 

--------------------------------------
You may review the report below and at:
https://www.rfc-editor.org/errata/eid5539

--------------------------------------
Status: Held for Document Update
Type: Editorial

Reported by: Yasuyuki Tanaka <yasuyuki.tanaka@inria.fr>
Date Reported: 2018-10-29
Held by: Erik Kline (IESG)

Section: 5

Original Text
-------------
(...)

   The Rank computation is described in Section 4.1 of [RFC6552].  A
   node's Rank (see Figure 4 for an example) is computed by the
   following equations:

      R(N) = R(P) + rank_increment

      rank_increment = (Rf*Sp + Sr) * MinHopRankIncrease

(...)

   This section illustrates the use of OF0 (see Figure 4).  We have:

      rank_increment = ((3*numTx/numTxAck)-2)*minHopRankIncrease = 512


Corrected Text
--------------
(...)

   The Rank computation is described in Section 4.1 of [RFC6552].  A
   node's Rank (see Figure 4 for an example) is computed by the
   following equations:

      R(N) = R(P) + rank_increase

      rank_increase = (Rf*Sp + Sr) * MinHopRankIncrease

(...)

   This section illustrates the use of OF0 (see Figure 4).  We have:

      rank_increase = ((3*numTx/numTxAck)-2)*minHopRankIncrease = 512


Notes
-----
s/rank_increment/rank_increase/

It'd be better to use "rank_increase" as the variable name for consistency, which is used in Section 4.1 of RFC 6552 (https://tools.ietf.org/html/rfc6552#section-4.1):

[excerpt from RFC 6552]

   The step_of_rank Sp that is computed for that link is multiplied by
   the rank_factor Rf and then possibly stretched by a term Sr that is
   less than or equal to the configured stretch_of_rank.  The resulting
   rank_increase is added to the Rank of preferred parent R(P) to obtain
   that of this node R(N):

   R(N) = R(P) + rank_increase where:

   rank_increase = (Rf*Sp + Sr) * MinHopRankIncrease

--------------------------------------
RFC8180 (draft-ietf-6tisch-minimal-21)
--------------------------------------
Title               : Minimal IPv6 over the TSCH Mode of IEEE 802.15.4e (6TiSCH) Configuration
Publication Date    : May 2017
Author(s)           : X. Vilajosana, Ed., K. Pister, T. Watteyne
Category            : BEST CURRENT PRACTICE
Source              : IPv6 over the TSCH mode of IEEE 802.15.4e
Area                : Internet
Stream              : IETF
Verifying Party     : IESG