1 / 10

P. Psenak , S.Previdi , C. Filsfils – Cisco Systems H. Gredler – Juniper Networks

draft-ietf-ospf-segment-routing-extensions-01 draft-psenak-ospf-segment-routing-ospfv3-extension-02. P. Psenak , S.Previdi , C. Filsfils – Cisco Systems H. Gredler – Juniper Networks W. Henderickx - Alcatel-Lucent R. Shakir - British Telecom Jeff Tantsura - Ericsson.

midori
Download Presentation

P. Psenak , S.Previdi , C. Filsfils – Cisco Systems H. Gredler – Juniper Networks

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. draft-ietf-ospf-segment-routing-extensions-01draft-psenak-ospf-segment-routing-ospfv3-extension-02draft-ietf-ospf-segment-routing-extensions-01draft-psenak-ospf-segment-routing-ospfv3-extension-02 P. Psenak, S.Previdi, C. Filsfils – Cisco Systems H. Gredler – Juniper Networks W. Henderickx - Alcatel-Lucent R. Shakir - British Telecom Jeff Tantsura - Ericsson IETF 88, November 3-8, 2013

  2. OSPF SR Drafts Evolution • Originally posted in June 2013 – before IETF 87 • Presented in Vancouver – IETF 88 • Drafts went through several rounds of updates • OSPFv2 SR draft has been accepted as WG item • OSPFv3 draft - WG adoption poll initiated, sufficient support to become WG item. IETF 88, November 3-8, 2013

  3. Evolution - SID/Label Range TLV • support for multiple SID/Label Range TLV in RI LSA • Useful if platform has fragmented label space and needs to originate multiple ranges IETF 88, November 3-8, 2013

  4. Evolution - Prefix-SID subTLV • New bits defined for Flags field • E-Flag: Explicit-Null Flag • V-Flag: Value/Index Flag • L-Flag: Local/Global Flag • moved Reserved field next to Flags field • in case we need more flags in the future • P-flag renamed to NP-flag • NP-Flag: no-PHP flag • Additional text describing the usage of E-Flag and P-flag has been added IETF 88, November 3-8, 2013

  5. Evolution: Adj-SID & LAN Adj-SID subTLVs • added V-bit, L-bit and S-bit • The V-Flag: Value/Index Flag • The L-Flag: Local/Global Flag • The S-Flag: Set Flag • Reserved field moved next to Flags • replaced nested Sub-TLVs with SID/Label/Index field IETF 88, November 3-8, 2013

  6. Evolution: IANA Section • Has been divided to multiple sections • Each section covers a single IANA registry • Experimental range has been reserved for TLVs/sub-TLVs of new Extended Prefix and Extending Link LSAs • 32768-33023 IETF 88, November 3-8, 2013

  7. Editorial Changes • editorial comments from Acee included • Thanks Acee! • more text added about the SID/Label Binding sub-TLV usage IETF 88, November 3-8, 2013

  8. Early IANA Allocation • Opaque Link-State Advertisements (LSA) Option Types Registry: - value 7 - for OSPFv2 Extended Prefix Opaque LSA - value 8 - for OSPFv2 Extended Link Opaque LSA OSPF Router Information (RI) TLVs Registry: - value 8 - SR-Algorithm TLV - value 9 - SID/Label Range TLV • http://www.iana.org/assignments/ospfv2-parameters/ospfv2-parameters.xhtml IETF 88, November 3-8, 2013

  9. Implementations • At least two implementations are available • Interoperability testing in progress between Alcatel and Cisco • basic interop test has passed • we will share a report in a following IETF IETF 88, November 3-8, 2013

  10. Discussion • Please post your comments on the WG list • We have received some good comments from Acee and Anton • Encoding of ‘Range Size’ in Prefix-SID/ and SID/Label Binding sub-TLVs IETF 88, November 3-8, 2013

More Related