draft-ietf-bess-orf-covering-prefixes-05.txt   draft-ietf-bess-orf-covering-prefixes-06.txt 
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Expires: September 7, 2015 Verizon Expires: September 7, 2015 Verizon
R. Bonica R. Bonica
Juniper Networks Juniper Networks
K. Patel K. Patel
Cisco Systems Cisco Systems
L. Yong L. Yong
Huawei Technologies Huawei Technologies
March 6, 2015 March 6, 2015
Covering Prefixes Outbound Route Filter for BGP-4 Covering Prefixes Outbound Route Filter for BGP-4
draft-ietf-bess-orf-covering-prefixes-05 draft-ietf-bess-orf-covering-prefixes-06
Abstract Abstract
This document defines a new Outbound Route Filter (ORF) type, called This document defines a new Outbound Route Filter (ORF) type, called
the "Covering Prefixes ORF (CP-ORF)". CP-ORF is applicable in the "Covering Prefixes ORF (CP-ORF)". CP-ORF is applicable in
Virtual Hub-and-Spoke VPNs. It also is applicable in BGP/MPLS Virtual Hub-and-Spoke VPNs. It also is applicable in BGP/MPLS
Ethernet VPN (EVPN) networks. Ethernet VPN (EVPN) networks.
Requirements Language Requirements Language
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This document defines a new ORF-type, called the "Covering Prefixes This document defines a new ORF-type, called the "Covering Prefixes
ORF (CP-ORF)". A BGP speaker sends a CP-ORF to a peer in order to ORF (CP-ORF)". A BGP speaker sends a CP-ORF to a peer in order to
pull routes that cover a specified host address. A prefix covers a pull routes that cover a specified host address. A prefix covers a
host address if it can be used to forward traffic towards that host host address if it can be used to forward traffic towards that host
address. Section 3 provides a more complete description of covering address. Section 3 provides a more complete description of covering
prefix selection criteria. prefix selection criteria.
CP-ORF is applicable in Virtual Hub-and-Spoke VPNs [RFC7024] CP-ORF is applicable in Virtual Hub-and-Spoke VPNs [RFC7024]
[RFC4364]. It also is applicable BGP/MPLS Ethernet VPN (EVPN) [RFC4364]. It also is applicable BGP/MPLS Ethernet VPN (EVPN)
[I-D.ietf-l2vpn-evpn] networks. [RFC7432] networks.
1.1. Terminology 1.1. Terminology
This document uses the following terms: This document uses the following terms:
o Address Family Identifier (AFI) - defined in [RFC4760] o Address Family Identifier (AFI) - defined in [RFC4760]
o Subsequent Address Family Identifier (SAFI) - defined in [RFC4760] o Subsequent Address Family Identifier (SAFI) - defined in [RFC4760]
o VPN IP Default Route - defined in [RFC7024]. o VPN IP Default Route - defined in [RFC7024].
o V-Hub - defined in [RFC7024]. o V-Hub - defined in [RFC7024].
o V-Spoke - defined in [RFC7024]. o V-Spoke - defined in [RFC7024].
o BGP/MPLS Ethernet VPN (EVPN) - defined in [I-D.ietf-l2vpn-evpn] o BGP/MPLS Ethernet VPN (EVPN) - defined in [RFC7432]
o EVPN Instance (EVI) - defined in [I-D.ietf-l2vpn-evpn] o EVPN Instance (EVI) - defined in [RFC7432]
o Unknown MAC Route (UMR) - A regular EVPN MAC/IP Advertisement o Unknown MAC Route (UMR) - A regular EVPN MAC/IP Advertisement
route where the MAC Address Length is set to 48 and the MAC route where the MAC Address Length is set to 48 and the MAC
address to 00:00:00:00:00:00 address to 00:00:00:00:00:00
o Default MAC Gateway (DMG) - An EVPN PE that advertises a UMR o Default MAC Gateway (DMG) - An EVPN PE that advertises a UMR
2. CP-ORF Encoding 2. CP-ORF Encoding
RFC 5291 augments the BGP ROUTE-REFRESH message so that it can carry RFC 5291 augments the BGP ROUTE-REFRESH message so that it can carry
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10. Acknowledgements 10. Acknowledgements
The authors wish to acknowledge Han Nguyen, James Uttaro and Alvaro The authors wish to acknowledge Han Nguyen, James Uttaro and Alvaro
Retana for their comments and contributions. Retana for their comments and contributions.
11. References 11. References
11.1. Normative References 11.1. Normative References
[I-D.ietf-l2vpn-evpn]
Sajassi, A., Aggarwal, R., Bitar, N., Isaac, A., and J.
Uttaro, "BGP MPLS Based Ethernet VPN", draft-ietf-l2vpn-
evpn-11 (work in progress), October 2014.
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997. Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC4271] Rekhter, Y., Li, T., and S. Hares, "A Border Gateway [RFC4271] Rekhter, Y., Li, T., and S. Hares, "A Border Gateway
Protocol 4 (BGP-4)", RFC 4271, January 2006. Protocol 4 (BGP-4)", RFC 4271, January 2006.
[RFC4360] Sangli, S., Tappan, D., and Y. Rekhter, "BGP Extended [RFC4360] Sangli, S., Tappan, D., and Y. Rekhter, "BGP Extended
Communities Attribute", RFC 4360, February 2006. Communities Attribute", RFC 4360, February 2006.
[RFC4684] Marques, P., Bonica, R., Fang, L., Martini, L., Raszuk, [RFC4684] Marques, P., Bonica, R., Fang, L., Martini, L., Raszuk,
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VPNs", RFC 6513, February 2012. VPNs", RFC 6513, February 2012.
[RFC6514] Aggarwal, R., Rosen, E., Morin, T., and Y. Rekhter, "BGP [RFC6514] Aggarwal, R., Rosen, E., Morin, T., and Y. Rekhter, "BGP
Encodings and Procedures for Multicast in MPLS/BGP IP Encodings and Procedures for Multicast in MPLS/BGP IP
VPNs", RFC 6514, February 2012. VPNs", RFC 6514, February 2012.
[RFC7024] Jeng, H., Uttaro, J., Jalil, L., Decraene, B., Rekhter, [RFC7024] Jeng, H., Uttaro, J., Jalil, L., Decraene, B., Rekhter,
Y., and R. Aggarwal, "Virtual Hub-and-Spoke in BGP/MPLS Y., and R. Aggarwal, "Virtual Hub-and-Spoke in BGP/MPLS
VPNs", RFC 7024, October 2013. VPNs", RFC 7024, October 2013.
[RFC7432] Sajassi, A., Aggarwal, R., Bitar, N., Isaac, A., Uttaro,
J., Drake, J., and W. Henderickx, "BGP MPLS-Based Ethernet
VPN", RFC 7432, February 2015.
11.2. Informative References 11.2. Informative References
[IANA.AFI] [IANA.AFI]
IANA, "Address Family Numbers", IANA, "Address Family Numbers",
<http://www.iana.org/assignments/address-family-numbers/ <http://www.iana.org/assignments/address-family-numbers/
address-family-numbers.xhtml>. address-family-numbers.xhtml>.
[IANA.EVPN] [IANA.EVPN]
IANA, "Ethernet VPN (EVPN)", IANA, "Ethernet VPN (EVPN)",
<http://www.iana.org/assignments/evpn/evpn.xhtml>. <http://www.iana.org/assignments/evpn/evpn.xhtml>.
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