RFC 5496, "The Reverse Path Forwarding (RPF) Vector TLV", March 2009

Errata ID: 3668
Status: Verified
Type: Editorial
Publication Format(s) : TEXT
Reported By: Bharat Joshi
Date Reported: 2013-06-17
Verifier Name: Adrian Farrel
Date Verified: 2013-09-17

Section 4 says:

4.  Vector Attribute TLV Format

   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
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |F|S| Type      | Length        |        Value
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-.......

   F bit
      Forward Unknown TLV.  If this bit is set, the TLV is forwarded
      regardless of whether the router understands the Type.  If the TLV
      is known, the F bit is ignored.

   S bit
      Bottom of Stack.  If this bit is set, then this is the last TLV in
      the stack.

It should say:

4.  Vector Attribute TLV Format

    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
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |F|E| Type      | Length        |        Value
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-.......

   F-bit
      Forward Unknown TLV.  If this bit is set, the TLV is forwarded
      regardless of whether the router understands the Type.  If the TLV
      is known, the F bit is ignored.

   E-bit:
      End of Attributes.  If this bit is set, then this is the last TLV
      in the stack. 

Notes:

RFC 5384 defined the Join Attribute for PIM.
RPF vector is one such Join attribute.

RFC 5384 defined the format for Join Attributes to use the F-bit and E-bit.

This change aligns the terminology with RFC 5384 and aligns the bit numbers in the figure.

There is no change to bits on the wire, procedures, or implementation details.

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