| draft-ietf-idr-bgp-prefix-sid-02.txt | draft-ietf-idr-bgp-prefix-sid-03.txt | |||
|---|---|---|---|---|
| IDR S. Previdi | IDR S. Previdi, Ed. | |||
| Internet-Draft C. Filsfils | Internet-Draft C. Filsfils | |||
| Intended status: Standards Track A. Lindem | Intended status: Standards Track A. Lindem | |||
| Expires: June 23, 2016 K. Patel | Expires: December 18, 2016 K. Patel | |||
| A. Sreekantiah | A. Sreekantiah | |||
| Cisco Systems | Cisco Systems | |||
| S. Ray | S. Ray | |||
| Unaffiliated | Unaffiliated | |||
| H. Gredler | H. Gredler | |||
| Individual | Individual | |||
| December 21, 2015 | June 16, 2016 | |||
| Segment Routing Prefix SID extensions for BGP | Segment Routing Prefix SID extensions for BGP | |||
| draft-ietf-idr-bgp-prefix-sid-02 | draft-ietf-idr-bgp-prefix-sid-03 | |||
| Abstract | Abstract | |||
| Segment Routing (SR) architecture allows a node to steer a packet | Segment Routing (SR) architecture allows a node to steer a packet | |||
| flow through any topological path and service chain by leveraging | flow through any topological path and service chain by leveraging | |||
| source routing. The ingress node prepends a SR header to a packet | source routing. The ingress node prepends a SR header to a packet | |||
| containing a set of "segments". Each segment represents a | containing a set of "segments". Each segment represents a | |||
| topological or a service-based instruction. Per-flow state is | topological or a service-based instruction. Per-flow state is | |||
| maintained only at the ingress node of the SR domain. | maintained only at the ingress node of the SR domain. | |||
| skipping to change at page 2, line 7 ¶ | skipping to change at page 2, line 7 ¶ | |||
| Internet-Drafts are working documents of the Internet Engineering | Internet-Drafts are working documents of the Internet Engineering | |||
| Task Force (IETF). Note that other groups may also distribute | Task Force (IETF). Note that other groups may also distribute | |||
| working documents as Internet-Drafts. The list of current Internet- | working documents as Internet-Drafts. The list of current Internet- | |||
| Drafts is at http://datatracker.ietf.org/drafts/current/. | Drafts is at http://datatracker.ietf.org/drafts/current/. | |||
| 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 | |||
| time. It is inappropriate to use Internet-Drafts as reference | time. It is inappropriate to use Internet-Drafts as reference | |||
| material or to cite them other than as "work in progress." | material or to cite them other than as "work in progress." | |||
| This Internet-Draft will expire on June 23, 2016. | This Internet-Draft will expire on December 18, 2016. | |||
| Copyright Notice | Copyright Notice | |||
| Copyright (c) 2015 IETF Trust and the persons identified as the | Copyright (c) 2016 IETF Trust and the persons identified as the | |||
| document authors. All rights reserved. | document authors. All rights reserved. | |||
| This document is subject to BCP 78 and the IETF Trust's Legal | This document is subject to BCP 78 and the IETF Trust's Legal | |||
| Provisions Relating to IETF Documents | Provisions Relating to IETF Documents | |||
| (http://trustee.ietf.org/license-info) in effect on the date of | (http://trustee.ietf.org/license-info) in effect on the date of | |||
| publication of this document. Please review these documents | publication of this document. Please review these documents | |||
| carefully, as they describe your rights and restrictions with respect | carefully, as they describe your rights and restrictions with respect | |||
| to this document. Code Components extracted from this document must | to this document. Code Components extracted from this document must | |||
| include Simplified BSD License text as described in Section 4.e of | include Simplified BSD License text as described in Section 4.e of | |||
| the Trust Legal Provisions and are provided without warranty as | the Trust Legal Provisions and are provided without warranty as | |||
| skipping to change at page 4, line 51 ¶ | skipping to change at page 4, line 51 ¶ | |||
| assumed to be done through | assumed to be done through | |||
| [I-D.ietf-idr-bgpls-segment-routing-epe]. | [I-D.ietf-idr-bgpls-segment-routing-epe]. | |||
| If the BGP speakers are not all configured with the same SRGB, and | If the BGP speakers are not all configured with the same SRGB, and | |||
| if traffic-engineering within the SR domain is required, each node | if traffic-engineering within the SR domain is required, each node | |||
| may be required to advertise its local SRGB in addition to the | may be required to advertise its local SRGB in addition to the | |||
| topological information. | topological information. | |||
| This documents assumes that BGP-LS is the preferred method for | This documents assumes that BGP-LS is the preferred method for | |||
| collecting both topological, peer segments and SRGB information | collecting both topological, peer segments and SRGB information | |||
| through [I-D.ietf-idr-ls-distribution], | through [RFC7752], [I-D.ietf-idr-bgpls-segment-routing-epe] and | |||
| [I-D.ietf-idr-bgpls-segment-routing-epe] and | ||||
| [I-D.gredler-idr-bgp-ls-segment-routing-ext]. However, as an | [I-D.gredler-idr-bgp-ls-segment-routing-ext]. However, as an | |||
| optional alternative for the advertisement of the local SRGB | optional alternative for the advertisement of the local SRGB | |||
| without the topology nor the peer SID's, hence without | without the topology nor the peer SID's, hence without | |||
| applicability for TE, the Originator SRGB TLV of the prefix-SID | applicability for TE, the Originator SRGB TLV of the prefix-SID | |||
| attribute, is specified in Section 4.3 of this document. | attribute, is specified in Section 4.3 of this document. | |||
| The index L_I is a 32 bit offset in the SRGB. Each BGP speaker | The index L_I is a 32 bit offset in the SRGB. Each BGP speaker | |||
| derives its local MPLS label, L, by adding L_I to the start value | derives its local MPLS label, L, by adding L_I to the start value | |||
| of its own SRGB, and programs L in its MPLS dataplane as its | of its own SRGB, and programs L in its MPLS dataplane as its | |||
| incoming/local label for the prefix. See Section 5.1 for more | incoming/local label for the prefix. See Section 5.1 for more | |||
| skipping to change at page 13, line 50 ¶ | skipping to change at page 13, line 50 ¶ | |||
| [RFC7606] Chen, E., Ed., Scudder, J., Ed., Mohapatra, P., and K. | [RFC7606] Chen, E., Ed., Scudder, J., Ed., Mohapatra, P., and K. | |||
| Patel, "Revised Error Handling for BGP UPDATE Messages", | Patel, "Revised Error Handling for BGP UPDATE Messages", | |||
| RFC 7606, DOI 10.17487/RFC7606, August 2015, | RFC 7606, DOI 10.17487/RFC7606, August 2015, | |||
| <http://www.rfc-editor.org/info/rfc7606>. | <http://www.rfc-editor.org/info/rfc7606>. | |||
| 12.2. Informative References | 12.2. Informative References | |||
| [I-D.gredler-idr-bgp-ls-segment-routing-ext] | [I-D.gredler-idr-bgp-ls-segment-routing-ext] | |||
| Previdi, S., Psenak, P., Filsfils, C., Gredler, H., Chen, | Previdi, S., Psenak, P., Filsfils, C., Gredler, H., Chen, | |||
| M., and J. Tantsura, "BGP Link-State extensions for | M., and j. jefftant@gmail.com, "BGP Link-State extensions | |||
| Segment Routing", draft-gredler-idr-bgp-ls-segment- | for Segment Routing", draft-gredler-idr-bgp-ls-segment- | |||
| routing-ext-01 (work in progress), December 2015. | routing-ext-02 (work in progress), June 2016. | |||
| [I-D.ietf-6man-segment-routing-header] | [I-D.ietf-6man-segment-routing-header] | |||
| Previdi, S., Filsfils, C., Field, B., Leung, I., Linkova, | Previdi, S., Filsfils, C., Field, B., Leung, I., Linkova, | |||
| J., Kosugi, T., Vyncke, E., and D. Lebrun, "IPv6 Segment | J., Aries, E., Kosugi, T., Vyncke, E., and D. Lebrun, | |||
| Routing Header (SRH)", draft-ietf-6man-segment-routing- | "IPv6 Segment Routing Header (SRH)", draft-ietf-6man- | |||
| header-00 (work in progress), December 2015. | segment-routing-header-01 (work in progress), March 2016. | |||
| [I-D.ietf-idr-bgpls-segment-routing-epe] | [I-D.ietf-idr-bgpls-segment-routing-epe] | |||
| Previdi, S., Filsfils, C., Ray, S., Patel, K., Dong, J., | Previdi, S., Filsfils, C., Ray, S., Patel, K., Dong, J., | |||
| and M. Chen, "Segment Routing Egress Peer Engineering BGP- | and M. Chen, "Segment Routing BGP Egress Peer Engineering | |||
| LS Extensions", draft-ietf-idr-bgpls-segment-routing- | BGP-LS Extensions", draft-ietf-idr-bgpls-segment-routing- | |||
| epe-02 (work in progress), December 2015. | epe-05 (work in progress), May 2016. | |||
| [I-D.ietf-idr-ls-distribution] | ||||
| Gredler, H., Medved, J., Previdi, S., Farrel, A., and S. | ||||
| Ray, "North-Bound Distribution of Link-State and TE | ||||
| Information using BGP", draft-ietf-idr-ls-distribution-13 | ||||
| (work in progress), October 2015. | ||||
| [I-D.ietf-ospf-segment-routing-extensions] | [I-D.ietf-ospf-segment-routing-extensions] | |||
| Psenak, P., Previdi, S., Filsfils, C., Gredler, H., | Psenak, P., Previdi, S., Filsfils, C., Gredler, H., | |||
| Shakir, R., Henderickx, W., and J. Tantsura, "OSPF | Shakir, R., Henderickx, W., and J. Tantsura, "OSPF | |||
| Extensions for Segment Routing", draft-ietf-ospf-segment- | Extensions for Segment Routing", draft-ietf-ospf-segment- | |||
| routing-extensions-05 (work in progress), June 2015. | routing-extensions-08 (work in progress), April 2016. | |||
| [I-D.ietf-spring-segment-routing] | [I-D.ietf-spring-segment-routing] | |||
| Filsfils, C., Previdi, S., Decraene, B., Litkowski, S., | Filsfils, C., Previdi, S., Decraene, B., Litkowski, S., | |||
| and r. rjs@rob.sh, "Segment Routing Architecture", draft- | and R. Shakir, "Segment Routing Architecture", draft-ietf- | |||
| ietf-spring-segment-routing-07 (work in progress), | spring-segment-routing-08 (work in progress), May 2016. | |||
| December 2015. | ||||
| [I-D.ietf-spring-segment-routing-central-epe] | [I-D.ietf-spring-segment-routing-central-epe] | |||
| Filsfils, C., Previdi, S., Ginsburg, D., and D. Afanasiev, | Filsfils, C., Previdi, S., Aries, E., Ginsburg, D., and D. | |||
| "Segment Routing Centralized Egress Peer Engineering", | Afanasiev, "Segment Routing Centralized BGP Peer | |||
| draft-ietf-spring-segment-routing-central-epe-00 (work in | Engineering", draft-ietf-spring-segment-routing-central- | |||
| progress), October 2015. | epe-01 (work in progress), March 2016. | |||
| [I-D.ietf-spring-segment-routing-msdc] | [I-D.ietf-spring-segment-routing-msdc] | |||
| Filsfils, C., Previdi, S., Mitchell, J., and P. Lapukhov, | Filsfils, C., Previdi, S., Mitchell, J., Aries, E., and P. | |||
| "BGP-Prefix Segment in large-scale data centers", draft- | Lapukhov, "BGP-Prefix Segment in large-scale data | |||
| ietf-spring-segment-routing-msdc-00 (work in progress), | centers", draft-ietf-spring-segment-routing-msdc-01 (work | |||
| October 2015. | in progress), April 2016. | |||
| [RFC4760] Bates, T., Chandra, R., Katz, D., and Y. Rekhter, | [RFC4760] Bates, T., Chandra, R., Katz, D., and Y. Rekhter, | |||
| "Multiprotocol Extensions for BGP-4", RFC 4760, | "Multiprotocol Extensions for BGP-4", RFC 4760, | |||
| DOI 10.17487/RFC4760, January 2007, | DOI 10.17487/RFC4760, January 2007, | |||
| <http://www.rfc-editor.org/info/rfc4760>. | <http://www.rfc-editor.org/info/rfc4760>. | |||
| [RFC7752] Gredler, H., Ed., Medved, J., Previdi, S., Farrel, A., and | ||||
| S. Ray, "North-Bound Distribution of Link-State and | ||||
| Traffic Engineering (TE) Information Using BGP", RFC 7752, | ||||
| DOI 10.17487/RFC7752, March 2016, | ||||
| <http://www.rfc-editor.org/info/rfc7752>. | ||||
| Authors' Addresses | Authors' Addresses | |||
| Stefano Previdi | Stefano Previdi (editor) | |||
| Cisco Systems | Cisco Systems | |||
| Via Del Serafico, 200 | Via Del Serafico, 200 | |||
| Rome 00142 | Rome 00142 | |||
| Italy | Italy | |||
| Email: sprevidi@cisco.com | Email: sprevidi@cisco.com | |||
| Clarence Filsfils | Clarence Filsfils | |||
| Cisco Systems | Cisco Systems | |||
| Brussels | Brussels | |||
| End of changes. 16 change blocks. | ||||
| 37 lines changed or deleted | 34 lines changed or added | |||
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