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RFC 3031, "Multiprotocol Label Switching Architecture", January 2001

Source of RFC: mpls (rtg)

Errata ID: 3171
Status: Rejected
Type: Editorial

Reported By: Nikolai Malykh
Date Reported: 2012-04-01
Rejected by: Adrian Farrel
Date Rejected: 2012-04-03

Section 3.20 says:

   Given a set of FECs which are "aggregatable" into a single FEC, it is
   possible to (a) aggregate them into a single FEC, (b) aggregate them
   into a set of FECs, or (c) not aggregate them at all.  Thus we can
   speak of the "granularity" of aggregation, with (a) being the
   "coarsest granularity", and (c) being the "finest granularity".

It should say:

   Given a set of FECs which are "aggregatable" into a single FEC, it is
   possible to (a) aggregate them into a single FEC, (b) aggregate them
   into a set of FECs, or (c) not aggregate them at all.  Thus we can
   speak of the "granularity" of aggregation, with (a) being the
   "coarsest granularity", and (b) being the "finest granularity".

Notes:

In the case of (c) the aggregation is not used, so there is no granularity.
--VERIFIER NOTES--
Not aggregating is a degenerate case of aggregation where a one-to-one aggregation mapping is used. Thus, the result is the "finest granularity".

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