RFC 7011, "Specification of the IP Flow Information Export (IPFIX) Protocol for the Exchange of Flow Information", September 2013

Errata ID: 8313
Status: Held for Document Update
Type: Technical
Publication Format(s) : TEXT
Reported By: Mohamed Boucadair
Date Reported: 2025-02-25
Held for Document Update by: Mahesh Jethanandani
Date Held: 2025-03-12

Section 3.2 says:

   E

      Enterprise bit.  This is the first bit of the Field Specifier.  If
      this bit is zero, the Information Element identifier identifies an
      Information Element in [IANA-IPFIX], and the four-octet Enterprise
      Number field MUST NOT be present.  If this bit is one, the
      Information Element identifier identifies an enterprise-specific
      Information Element, and the Enterprise Number field MUST be
      present.

   Information Element identifier

      A numeric value that represents the Information Element.  Refer to
      [IANA-IPFIX].

It should say:

   E

      Enterprise bit.  This is the first bit of the Field Specifier.  If
      this bit is zero, the Information Element identifier identifies an
      Information Element in [IANA-IPFIX], and the four-octet Enterprise
      Number field MUST NOT be present.  If this bit is one, the
      Information Element identifier identifies an enterprise-specific
      Information Element, and the Enterprise Number field MUST be
      present.

   Information Element identifier

      A numeric value that represents the Information Element. This field
      takes a value in [IANA-IPFIX] when the E bit is set to zero.

Notes:

Makes it explicit that the values in [IANA-IPFIX] only applies when the is E-bit is unset.

An alternative would be to simply delete "Refer to [IANA-IPFIX]." as the exact behavior is already mentioned under the E bit description.

Report New Errata