IS-IS Extensions to Support Routing over IPv6 Dataplane
draft-bashandy-isis-srv6-extensions-01
|
| Document |
Type |
|
Active Internet-Draft (individual)
|
|
Last updated |
|
2017-09-29
|
|
Replaces |
|
draft-previdi-isis-ipv6-prefix-sid
|
|
Stream |
|
(None)
|
|
Intended RFC status |
|
(None)
|
|
Formats |
|
plain text
xml
pdf
html
bibtex
|
| Stream |
Stream state |
|
(No stream defined) |
|
Consensus Boilerplate |
|
Unknown
|
|
RFC Editor Note |
|
(None)
|
| IESG |
IESG state |
|
I-D Exists
|
|
Telechat date |
|
|
|
Responsible AD |
|
(None)
|
|
Send notices to |
|
(None)
|
Networking Working Group L. Ginsberg
Internet-Draft A. Bashandy
Intended status: Standards Track C. Filsfils
Expires: April 2, 2018 Cisco Systems
B. Decraene
Orange
September 29, 2017
IS-IS Extensions to Support Routing over IPv6 Dataplane
draft-bashandy-isis-srv6-extensions-01.txt
Abstract
Segment Routing (SR) allows for a flexible definition of end-to-end
paths by encoding paths as sequences of topological sub-paths, called
"segments". Segment routing architecture can be implemented over an
MPLS data plane as well as an IPv6 data plane. This draft describes
the IS-IS extensions required to support Segment Routing over an IPv6
data plane.
Requirements Language
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in RFC 2119 [RFC2119].
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/.
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 April 2, 2018.
Ginsberg, et al. Expires April 2, 2018 [Page 1]
Internet-Draft draft-bashandy-isis-srv6-extensions September 2017
Copyright Notice
Copyright (c) 2017 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(https://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. SRv6-Capabilities sub-TLV . . . . . . . . . . . . . . . . . . 3
2.1. Maximum SL sub-sub-TLV . . . . . . . . . . . . . . . . . 4
2.2. Maximum End Pop SRH sub-sub-TLV . . . . . . . . . . . . . 5
2.3. Maximum T.Insert SRH sub-sub-TLV . . . . . . . . . . . . 5
2.4. Maximum T.Encap SRH sub-sub-TLV . . . . . . . . . . . . . 5
2.5. Maximum End D SRH sub-sub-TLV . . . . . . . . . . . . . . 6
3. SRv6-function Descriptor . . . . . . . . . . . . . . . . . . 6
4. SRv6-SID TLV . . . . . . . . . . . . . . . . . . . . . . . . 9
5. Function Code Points . . . . . . . . . . . . . . . . . . . . 11
6. Advertising SRv6 SIDs associated with a Neighbor . . . . . . 11
6.1. P2P Srv6 X-SID sub-TLV . . . . . . . . . . . . . . . . . 11
6.2. LAN SRv6 X-SID sub-TLV . . . . . . . . . . . . . . . . . 12
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 13
7.1. SRv6 SID TLV and sub-TLVs . . . . . . . . . . . . . . . . 14
7.2. IS-IS SRv6-functions Codepoints Registry . . . . . . . . 14
7.3. SRv6 Capabilities sub-TLV . . . . . . . . . . . . . . . . 15
7.4. P2P SRv6 X-SID and LAN SRv6 X-SID sub-TLVs . . . . . . . 15
7.5. IS-IS SRv6 X-SID sub-sub-TLV Codepoints Registry . . . . 16
8. Security Considerations . . . . . . . . . . . . . . . . . . . 16
9. Contributors . . . . . . . . . . . . . . . . . . . . . . . . 16
10. References . . . . . . . . . . . . . . . . . . . . . . . . . 17
10.1. Normative References . . . . . . . . . . . . . . . . . . 18
10.2. Informative References . . . . . . . . . . . . . . . . . 18
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 18
1. Introduction
With Segment Routing (SR)[SRARCH], a node steers a packet through an
Show full document text