BGP Link State Extensions for SRv6
draft-ietf-idr-bgpls-srv6-ext-03
Inter-Domain Routing G. Dawra
Internet-Draft LinkedIn
Intended status: Standards Track C. Filsfils
Expires: January 11, 2021 K. Talaulikar, Ed.
Cisco Systems
M. Chen
Huawei
D. Bernier
Bell Canada
B. Decraene
Orange
July 10, 2020
BGP Link State Extensions for SRv6
draft-ietf-idr-bgpls-srv6-ext-03
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 behaviors
and other attributes via BGP.
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
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Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on January 11, 2021.
Dawra, et al. Expires January 11, 2021 [Page 1]
Internet-Draft BGP-LS Extensions for SRv6 July 2020
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Requirements Language . . . . . . . . . . . . . . . . . . 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 . . . . . . . . . . . . . . . . 14
7. SRv6 SID Attributes . . . . . . . . . . . . . . . . . . . . . 15
7.1. SRv6 Endpoint Behavior 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
10. Operational Considerations . . . . . . . . . . . . . . . . . 20
10.1. Operations . . . . . . . . . . . . . . . . . . . . . . . 20
11. Security Considerations . . . . . . . . . . . . . . . . . . . 20
12. Contributors . . . . . . . . . . . . . . . . . . . . . . . . 20
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