OSPFv3 LSA Extendibility
draft-ietf-ospf-ospfv3-lsa-extend-20
| The information below is for an old version of the document | |||
|---|---|---|---|
| Document | Type | Active Internet-Draft (ospf WG) | |
| Last updated | 2018-01-18 (latest revision 2017-12-26) | ||
| Replaces | draft-acee-ospfv3-lsa-extend | ||
| Stream | IETF | ||
| Intended RFC status | Proposed Standard | ||
| Formats | plain text pdf html bibtex | ||
| Stream | WG state | Submitted to IESG for Publication (wg milestone: Dec 2016 - Standardize OSPFv3 ... ) | |
| Document shepherd | Peter Psenak | ||
| Shepherd write-up | Show (last changed 2017-11-26) | ||
| IESG | IESG state | IESG Evaluation | |
| Consensus Boilerplate | Yes | ||
| Telechat date |
Has enough positions to pass. |
||
| Responsible AD | Alia Atlas | ||
| Send notices to | Peter Psenak <ppsenak@cisco.com> | ||
| IANA | IANA review state | IANA - Not OK | |
| IANA action state | None | ||
Network Working Group A. Lindem
Internet-Draft A. Roy
Updates: 5340, 5838 (if approved) Cisco Systems
Intended status: Standards Track D. Goethals
Expires: June 29, 2018 Nokia
V. Reddy Vallem
F. Baker
December 26, 2017
OSPFv3 LSA Extendibility
draft-ietf-ospf-ospfv3-lsa-extend-20.txt
Abstract
OSPFv3 requires functional extension beyond what can readily be done
with the fixed-format Link State Advertisement (LSA) as described in
RFC 5340. Without LSA extension, attributes associated with OSPFv3
links and advertised IPv6 prefixes must be advertised in separate
LSAs and correlated to the fixed-format LSAs. This document extends
the LSA format by encoding the existing OSPFv3 LSA information in
Type-Length-Value (TLV) tuples and allowing advertisement of
additional information with additional TLVs. Backward compatibility
mechanisms are also described.
This document updates RFC 5340, "OSPF for IPv6", and RFC 5838,
"Support of Address Families in OSPFv3".
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 http://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 June 29, 2018.
Lindem, et al. Expires June 29, 2018 [Page 1]
Internet-Draft OSPFv3 LSA Extendibility December 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
(http://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 . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Requirements notation . . . . . . . . . . . . . . . . . . 4
1.2. OSPFv3 LSA Terminology . . . . . . . . . . . . . . . . . 4
2. OSPFv3 Extended LSA Types . . . . . . . . . . . . . . . . . . 4
3. OSPFv3 Extended LSA TLVs . . . . . . . . . . . . . . . . . . 5
3.1. Prefix Options Extensions . . . . . . . . . . . . . . . . 6
3.1.1. N-bit Prefix Option . . . . . . . . . . . . . . . . . 6
3.2. Router-Link TLV . . . . . . . . . . . . . . . . . . . . . 7
3.3. Attached-Routers TLV . . . . . . . . . . . . . . . . . . 8
3.4. Inter-Area-Prefix TLV . . . . . . . . . . . . . . . . . . 9
3.5. Inter-Area-Router TLV . . . . . . . . . . . . . . . . . . 10
3.6. External-Prefix TLV . . . . . . . . . . . . . . . . . . . 11
3.7. Intra-Area-Prefix TLV . . . . . . . . . . . . . . . . . . 12
3.8. IPv6 Link-Local Address TLV . . . . . . . . . . . . . . . 13
3.9. IPv4 Link-Local Address TLV . . . . . . . . . . . . . . . 14
3.10. IPv6-Forwarding-Address Sub-TLV . . . . . . . . . . . . . 15
3.11. IPv4-Forwarding-Address Sub-TLV . . . . . . . . . . . . . 15
3.12. Route-Tag Sub-TLV . . . . . . . . . . . . . . . . . . . . 16
4. OSPFv3 Extended LSAs . . . . . . . . . . . . . . . . . . . . 16
4.1. OSPFv3 E-Router-LSA . . . . . . . . . . . . . . . . . . . 16
4.2. OSPFv3 E-Network-LSA . . . . . . . . . . . . . . . . . . 18
4.3. OSPFv3 E-Inter-Area-Prefix-LSA . . . . . . . . . . . . . 19
4.4. OSPFv3 E-Inter-Area-Router-LSA . . . . . . . . . . . . . 20
4.5. OSPFv3 E-AS-External-LSA . . . . . . . . . . . . . . . . 21
4.6. OSPFv3 E-NSSA-LSA . . . . . . . . . . . . . . . . . . . . 22
4.7. OSPFv3 E-Link-LSA . . . . . . . . . . . . . . . . . . . . 23
4.8. OSPFv3 E-Intra-Area-Prefix-LSA . . . . . . . . . . . . . 25
5. Malformed OSPFv3 Extended LSA Handling . . . . . . . . . . . 26
Show full document text