| < draft-ietf-ospf-segment-routing-extensions-08.txt | draft-ietf-ospf-segment-routing-extensions-09.txt > | |||
|---|---|---|---|---|
| Open Shortest Path First IGP P. Psenak, Ed. | Open Shortest Path First IGP P. Psenak, Ed. | |||
| Internet-Draft S. Previdi, Ed. | Internet-Draft S. Previdi, Ed. | |||
| Intended status: Standards Track C. Filsfils | Intended status: Standards Track C. Filsfils | |||
| Expires: October 29, 2016 Cisco Systems, Inc. | Expires: January 7, 2017 Cisco Systems, Inc. | |||
| H. Gredler | H. Gredler | |||
| Individual | Individual | |||
| R. Shakir | R. Shakir | |||
| Jive Communications, Inc. | Jive Communications, Inc. | |||
| W. Henderickx | W. Henderickx | |||
| Alcatel-Lucent | Nokia | |||
| J. Tantsura | J. Tantsura | |||
| Individual | Individual | |||
| April 27, 2016 | July 6, 2016 | |||
| OSPF Extensions for Segment Routing | OSPF Extensions for Segment Routing | |||
| draft-ietf-ospf-segment-routing-extensions-08 | draft-ietf-ospf-segment-routing-extensions-09 | |||
| Abstract | Abstract | |||
| Segment Routing (SR) allows a flexible definition of end-to-end paths | Segment Routing (SR) allows a flexible definition of end-to-end paths | |||
| within IGP topologies by encoding paths as sequences of topological | within IGP topologies by encoding paths as sequences of topological | |||
| sub-paths, called "segments". These segments are advertised by the | sub-paths, called "segments". These segments are advertised by the | |||
| link-state routing protocols (IS-IS and OSPF). | link-state routing protocols (IS-IS and OSPF). | |||
| This draft describes the OSPF extensions required for Segment | This draft describes the OSPF extensions required for Segment | |||
| Routing. | Routing. | |||
| skipping to change at page 2, line 4 ¶ | skipping to change at page 2, line 4 ¶ | |||
| 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 October 29, 2016. | This Internet-Draft will expire on January 7, 2017. | |||
| Copyright Notice | Copyright Notice | |||
| Copyright (c) 2016 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 | |||
| skipping to change at page 4, line 51 ¶ | skipping to change at page 5, line 4 ¶ | |||
| LSA (defined in [RFC7770]). | LSA (defined in [RFC7770]). | |||
| 3.1. SR-Algorithm TLV | 3.1. SR-Algorithm TLV | |||
| The SR-Algorithm TLV is a top-level TLV of the Router Information | The SR-Algorithm TLV is a top-level TLV of the Router Information | |||
| Opaque LSA (defined in [RFC7770]). | Opaque LSA (defined in [RFC7770]). | |||
| The SR-Algorithm Sub-TLV is optional. It MAY only be advertised once | The SR-Algorithm Sub-TLV is optional. It MAY only be advertised once | |||
| in the Router Information Opaque LSA. If the SID/Label Range TLV, as | in the Router Information Opaque LSA. If the SID/Label Range TLV, as | |||
| defined in Section 3.2, is advertised, then the SR-Algorithm TLV MUST | defined in Section 3.2, is advertised, then the SR-Algorithm TLV MUST | |||
| also be advertised. | also be advertised. If the SR-Algorithm TLV is not advertised by the | |||
| node, such node is considered as not being segment routing capable. | ||||
| An SR Router may use various algorithms when calculating reachability | An SR Router may use various algorithms when calculating reachability | |||
| to OSPF routers or prefixes in an OSPF area. Examples of these | to OSPF routers or prefixes in an OSPF area. Examples of these | |||
| algorithms are metric based Shortest Path First (SPF), various | algorithms are metric based Shortest Path First (SPF), various | |||
| flavors of Constrained SPF, etc. The SR-Algorithm TLV allows a | flavors of Constrained SPF, etc. The SR-Algorithm TLV allows a | |||
| router to advertise the algorithms currently used by the router to | router to advertise the algorithms currently used by the router to | |||
| other routers in an OSPF area. The SR-Algorithm TLV has following | other routers in an OSPF area. The SR-Algorithm TLV has following | |||
| format: | format: | |||
| 0 1 2 3 | 0 1 2 3 | |||
| skipping to change at page 32, line 5 ¶ | skipping to change at page 32, line 5 ¶ | |||
| Email: hannes@gredler.at | Email: hannes@gredler.at | |||
| Rob Shakir | Rob Shakir | |||
| Jive Communications, Inc. | Jive Communications, Inc. | |||
| 1275 West 1600 North, Suite 100 | 1275 West 1600 North, Suite 100 | |||
| Orem, UT 84057 | Orem, UT 84057 | |||
| US | US | |||
| Email: rrjs@rob.sh | Email: rrjs@rob.sh | |||
| Wim Henderickx | Wim Henderickx | |||
| Alcatel-Lucent | Nokia | |||
| Copernicuslaan 50 | Copernicuslaan 50 | |||
| Antwerp 2018 | Antwerp 2018 | |||
| BE | BE | |||
| Email: wim.henderickx@alcatel-lucent.com | Email: wim.henderickx@nokia.com | |||
| Jeff Tantsura | Jeff Tantsura | |||
| Individual | Individual | |||
| US | US | |||
| Email: Jeff.Tantsura@ericsson.com | Email: jefftant.ietf@gmail.com | |||
| End of changes. 9 change blocks. | ||||
| 8 lines changed or deleted | 9 lines changed or added | |||
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