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RFC 4384, "BGP Communities for Data Collection", February 2006

Source of RFC: grow (ops)

Errata ID: 4550
Status: Rejected
Type: Technical
Publication Format(s) : TEXT

Reported By: Warren Turkal
Date Reported: 2015-12-01
Rejected by: joel jaeggli
Date Rejected: 2017-03-29

Section 4.1 says:

The chart at the bottom of 4.1:

      0                   1                   2                   3
      0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     |      0x00     |      0x0008   |           0x2A7C              |
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     |      0x00     |      0x00     |           0x10F2              |
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

It should say:

      0                   1                   2                   3
      0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     |      0x00     |      0x08     |           0x2A7C              |
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     |      0x00     |      0x00     |           0x10F2              |
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

Notes:

The second group has a hex value that looks like two octets: "0x0008". If I am interpreting the chart, extended community RFCs, and the extended community IANA registry correctly, the second group should be a single octet (i.e., "0x08").

Also, the same error is in the Section 4.2 chart.
--VERIFIER NOTES--
The Transitive Two-Octet AS-Specific Extended Community Sub-Types registry specifies the low order byte as it notes:

Reference
[RFC7153]
Note
This registry contains values of the second octet (the "Sub-Type"
field) of an extended community when the value of the first
octet (the "Type" field) is 0x00.

so the diagram which includes both is correct but obviously somewhat hard to read since it contains both bytes. I think this proposed text ads little additional clarity.

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