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

Note: This RFC has been updated by RFC 7606

Source of RFC: idr (rtg)
See Also: RFC 4760 w/ inline errata

Errata ID: 1573
Status: Verified
Type: Technical
Publication Format(s) : TEXT

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         Identifier field identifies the semantics of Withdrawn Routes 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         field identifies the semantics of Withdrawn Routes Network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.

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