BGP Link State Extensions for SRv6
draft-ietf-idr-bgpls-srv6-ext-01
Inter-Domain Routing G. Dawra, Ed.
Internet-Draft LinkedIn
Intended status: Standards Track C. Filsfils
Expires: January 8, 2020 K. Talaulikar, Ed.
Cisco Systems
M. Chen
Huawei
D. Bernier
Bell Canada
B. Decraene
Orange
July 7, 2019
BGP Link State Extensions for SRv6
draft-ietf-idr-bgpls-srv6-ext-01
Abstract
Segment Routing IPv6 (SRv6) allows for a flexible definition of end-
to-end paths within various topologies by encoding paths as sequences
of topological or functional sub-paths, called "segments". These
segments are advertised by the various protocols such as BGP, ISIS
and OSPFv3.
BGP Link-state (BGP-LS) address-family solution for SRv6 is similar
to BGP-LS for SR for MPLS dataplane. This draft defines extensions
to the BGP-LS to advertise SRv6 Segments along with their functions
and other attributes via BGP.
Requirements Language
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
"OPTIONAL" in this document are to be interpreted as described in BCP
14 [RFC2119] [RFC8174] when, and only when, they appear in all
capitals, as shown here.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/.
Dawra, et al. Expires January 8, 2020 [Page 1]
Internet-Draft BGP-LS Extensions for SRv6 July 2019
Internet-Drafts are draft documents valid for a maximum of six months
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This Internet-Draft will expire on January 8, 2020.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. BGP-LS Extensions for SRv6 . . . . . . . . . . . . . . . . . 4
3. SRv6 Node Attributes . . . . . . . . . . . . . . . . . . . . 5
3.1. SRv6 Capabilities TLV . . . . . . . . . . . . . . . . . . 5
3.2. SRv6 Node MSD Types . . . . . . . . . . . . . . . . . . . 6
4. SRv6 Link Attributes . . . . . . . . . . . . . . . . . . . . 7
4.1. SRv6 End.X SID TLV . . . . . . . . . . . . . . . . . . . 7
4.2. SRv6 LAN End.X SID TLV . . . . . . . . . . . . . . . . . 9
4.3. SRv6 Link MSD Types . . . . . . . . . . . . . . . . . . . 11
5. SRv6 Prefix Attributes . . . . . . . . . . . . . . . . . . . 11
5.1. SRv6 Locator TLV . . . . . . . . . . . . . . . . . . . . 11
6. SRv6 SID NLRI . . . . . . . . . . . . . . . . . . . . . . . . 13
6.1. SRv6 SID Information TLV . . . . . . . . . . . . . . . . 15
7. SRv6 SID Attributes . . . . . . . . . . . . . . . . . . . . . 15
7.1. SRv6 Endpoint Function TLV . . . . . . . . . . . . . . . 15
7.2. SRv6 BGP Peer Node SID TLV . . . . . . . . . . . . . . . 16
7.3. SRv6 SID Structure TLV . . . . . . . . . . . . . . . . . 18
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 19
8.1. BGP-LS NLRI-Types . . . . . . . . . . . . . . . . . . . . 19
8.2. BGP-LS TLVs . . . . . . . . . . . . . . . . . . . . . . . 19
9. Manageability Considerations . . . . . . . . . . . . . . . . 19
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