RFC Errata


Errata Search

 
Source of RFC  
Summary Table Full Records

Found 5 records.

Status: Verified (1)

RFC 4760, "Multiprotocol Extensions for BGP-4", January 2007

Source of RFC: idr (rtg)

Errata ID: 1573

Status: Verified
Type: Technical

Reported By: yakov rekhter
Date Reported: 2008-10-13
Verifier Name: Stewart Bryant
Date Verified: 2012-02-20

Section 4 says:

      Address Family Identifier (AFI):

         This field in combination with the Subsequent Address Family
         Identifier field identifies the set of Network Layer protocols
         to which the address carried in the Next Hop field must belong,
         the way in which the address of the next hop is encoded, and
         the semantics of the Network Layer Reachability Information
         that follows.  If the Next Hop is allowed to be from more than
         one Network Layer protocol, the encoding of the Next Hop MUST
         provide a way to determine its Network Layer protocol.

         Presently defined values for the Address Family Identifier
         field are specified in the IANA's Address Family Numbers
         registry [IANA-AF].

      Subsequent Address Family Identifier (SAFI):

         This field in combination with the Address Family Identifier
         field identifies the set of Network Layer protocols to which
         the address carried in the Next Hop must belong, the way in
         which the address of the next hop is encoded, and the semantics
         of the Network Layer Reachability Information that follows.  If
         the Next Hop is allowed to be from more than one Network Layer
         protocol, the encoding of the Next Hop MUST provide a way to
         determine its Network Layer protocol.


It should say:

      Address Family Identifier (AFI):
 
         This field in combination with the Subsequent Address Family
         Identifier field identifies the semantics of Withdrawn Routes 
         Network Layer Reachability Information carried in the attribute.
 
         Presently defined values for the Address Family Identifier
         field are specified in the IANA's Address Family Numbers
         registry [IANA-AF].

      Subsequent Address Family Identifier (SAFI):

         This field in combination with the Address Family Identifier
         field identifies the semantics of Withdrawn Routes Network
         Layer Reachability Information carried in the attribute.

Notes:

This original text refers to the field (Next Hop) that is not present in
the attribute MP_UNREACH_NLRI. Therefore the original text is not applicable.

Status: Held for Document Update (4)

RFC 4760, "Multiprotocol Extensions for BGP-4", January 2007

Source of RFC: idr (rtg)

Errata ID: 1778

Status: Held for Document Update
Type: Editorial

Reported By: Nikolai Malykh
Date Reported: 2009-05-05
Held for Document Update by: Stewart Bryant

Section 3 says:

   An UPDATE message SHOULD NOT include the same address prefix (of the
   same <AFI, SAFI>) in more than one of the following fields: WITHDRAWN
   ROUTES field, Network Reachability Information fields, MP_REACH_NLRI
   field, and MP_UNREACH_NLRI field.  The processing of an UPDATE
   message in this form is undefined.

It should say:

   An UPDATE message SHOULD NOT include the same address prefix (of the
   same <AFI, SAFI>) in more than one of the following fields: WITHDRAWN
   ROUTES field, Network Layer Reachability Information fields, MP_REACH_NLRI
   field, and MP_UNREACH_NLRI field.  The processing of an UPDATE
   message in this form is undefined.

Errata ID: 3849

Status: Held for Document Update
Type: Editorial

Reported By: Ramakrishna DTV
Date Reported: 2013-12-25
Held for Document Update by: Stewart Bryant
Date Held: 2014-03-02

Section 3 says:

   The next hop information carried in the MP_REACH_NLRI path attribute
   defines the Network Layer address of the router that SHOULD be used
   as the next hop to the destinations listed in the MP_NLRI attribute
   in the UPDATE message.

It should say:

   The next hop information carried in the MP_REACH_NLRI path attribute
   defines the Network Layer address of the router that SHOULD be used
   as the next hop to the destinations listed in the NLRI field of the 
   MP_REACH_NLRI attribute in the UPDATE message.

Notes:

There is no attribute named "MP_NLRI".

Whilst this should be looked at in any update of the text, the correct term is clear from the context.

Errata ID: 3848

Status: Held for Document Update
Type: Editorial

Reported By: Ramakrishna DTV
Date Reported: 2013-12-23
Held for Document Update by: Stewart Bryant
Date Held: 2014-03-02

Section 3 says:

   (b) to permit a router to advertise the Network Layer address of the
       router that should be used as the next hop to the destinations
       listed in the Network Layer Reachability Information field of the
       MP_NLRI attribute.

It should say:

   (b) to permit a router to advertise the Network Layer address of the
       router that should be used as the next hop to the destinations
       listed in the Network Layer Reachability Information field of the
       MP_REACH_NLRI attribute.

Notes:

There is no attribute named "MP_NLRI".

Whilst this should be corrected in any revision of the text, the correct term is clear from the context.

Errata ID: 5120

Status: Held for Document Update
Type: Editorial

Reported By: Dale Worley
Date Reported: 2017-09-23
Held for Document Update by: Alvaro Retana
Date Held: 2017-11-06

Section global says:

section 3:  ... each NLRI ... [2 occurrences]

section 5:  The Network Layer Reachability information is encoded as ...

It should say:

... each NLRI item ...

When the Subsequent Address Family Identifier field is set to one of
the values defined in this document (1 or 2), the NLRI field is encoded
as ...

Notes:

The text in section 3 makes it clear that the NLRI encoding in section 5 is only
specified for SAFI 1 and 2, but the text in section 5 does not state this. This tends
to cause readers to believe that section 5 applies to any SAFI. (See, e.g.,
draft-ietf-mpls-rfc3107bis.) (However, other RFCs do specify similar encoding structures
for some other SAFIs; see, e.g., RFC 3107.)

The wording "each NLRI" is incorrect, as NLRI is a field and there is only one of them in an UPDATE message.

Report New Errata