draft-ietf-idr-rfc2858bis-07.txt   draft-ietf-idr-rfc2858bis-08.txt 
Network Working Group Tony Bates (Cisco Systems) Network Working Group Tony Bates (Cisco Systems)
Internet Draft Ravi Chandra (Redback Networks) Internet Draft Ravi Chandra (Sonoa Systems)
Expiration Date: February 2006 Dave Katz (Juniper Networks) Expiration Date: July 2006 Dave Katz (Juniper Networks)
Obsoles RFC2858 Yakov Rekhter (Juniper Networks) Obsoles RFC2858 Yakov Rekhter (Juniper Networks)
Multiprotocol Extensions for BGP-4 Multiprotocol Extensions for BGP-4
draft-ietf-idr-rfc2858bis-07.txt draft-ietf-idr-rfc2858bis-08.txt
Status of this Memo Status of this Memo
Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF), its areas, and its working groups. Note that Task Force (IETF), its areas, and its working groups. Note that
other groups may also distribute working documents as Internet- other groups may also distribute working documents as Internet-
Drafts. Drafts.
Internet-Drafts are draft documents valid for a maximum of six months Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
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A BGP speaker that uses Multiprotocol Extensions SHOULD use the A BGP speaker that uses Multiprotocol Extensions SHOULD use the
Capability Advertisment procedures [BGP-CAP] to determine whether the Capability Advertisment procedures [BGP-CAP] to determine whether the
speaker could use Multiprotocol Extensions with a particular peer. speaker could use Multiprotocol Extensions with a particular peer.
The fields in the Capabilities Optional Parameter are set as follows. The fields in the Capabilities Optional Parameter are set as follows.
The Capability Code field is set to 1 (which indicates Multiprotocol The Capability Code field is set to 1 (which indicates Multiprotocol
Extensions capabilities). The Capability Length field is set to 4. Extensions capabilities). The Capability Length field is set to 4.
The Capability Value field is defined as: The Capability Value field is defined as:
The use and meaning of this field is as follow:
0 7 15 23 31 0 7 15 23 31
+-------+-------+-------+-------+ +-------+-------+-------+-------+
| AFI | Res. | SAFI | | AFI | Res. | SAFI |
+-------+-------+-------+-------+ +-------+-------+-------+-------+
The use and meaning of this field is as follow:
AFI - Address Family Identifier (16 bit), encoded the same way AFI - Address Family Identifier (16 bit), encoded the same way
as in the Multiprotocol Extensions as in the Multiprotocol Extensions
Res. - Reserved (8 bit) field. SHOULD be set to 0 by the sender Res. - Reserved (8 bit) field. SHOULD be set to 0 by the sender
and ignored by the receiver. and ignored by the receiver.
SAFI - Subsequent Address Family Identifier (8 bit), encoded SAFI - Subsequent Address Family Identifier (8 bit), encoded
the same way as in the Multiprotocol Extensions. the same way as in the Multiprotocol Extensions.
A speaker that supports multiple <AFI, SAFI> tuples includes them as A speaker that supports multiple <AFI, SAFI> tuples includes them as
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http://www.ietf.org/ipr. http://www.ietf.org/ipr.
The IETF invites any interested party to bring to its attention any The IETF invites any interested party to bring to its attention any
copyrights, patents or patent applications, or other proprietary copyrights, patents or patent applications, or other proprietary
rights that may cover technology that may be required to implement rights that may cover technology that may be required to implement
this standard. Please address the information to the IETF at ietf- this standard. Please address the information to the IETF at ietf-
ipr@ietf.org. ipr@ietf.org.
14. Copyright Notice 14. Copyright Notice
Copyright (C) The Internet Society (2005). Copyright (C) The Internet Society (2006).
This document is subject to the rights, licenses and restrictions This document is subject to the rights, licenses and restrictions
contained in BCP 78, and except as set forth therein, the authors contained in BCP 78, and except as set forth therein, the authors
retain all their rights. retain all their rights.
This document and the information contained herein are provided on an This document and the information contained herein are provided on an
"AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS "AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS
OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY AND THE INTERNET OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY AND THE INTERNET
ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED, ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE
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[RFC4020] "Early IANA Allocation of Standards Track Code Points", K. [RFC4020] "Early IANA Allocation of Standards Track Code Points", K.
Kompella, A. Zinin, BCP0100, RFC 4020, February 2005. Kompella, A. Zinin, BCP0100, RFC 4020, February 2005.
17. Author Information 17. Author Information
Tony Bates Tony Bates
Cisco Systems, Inc. Cisco Systems, Inc.
email: tbates@cisco.com email: tbates@cisco.com
Ravi Chandra Ravi Chandra
Redback Networks Sonoa Systems
e-mail: rchandra@redback.com e-mail: rchandra@sonoasystems.com
Dave Katz Dave Katz
Juniper Networks, Inc. Juniper Networks, Inc.
email: dkatz@juniper.com email: dkatz@juniper.com
Yakov Rekhter Yakov Rekhter
Juniper Networks, Inc. Juniper Networks, Inc.
email: yakov@juniper.com email: yakov@juniper.com
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