OSPF Transport Instance Extensions
draft-acee-lsr-ospf-transport-instance-00
LSR Workgroup A. Lindem
Internet-Draft Cisco Systems
Intended status: Standards Track Y. Qu
Expires: March 14, 2021 Futurewei
A. Roy
Arrcus, Inc.
S. Mirtorabi
Cisco Systems
September 10, 2020
OSPF Transport Instance Extensions
draft-acee-lsr-ospf-transport-instance-00
Abstract
OSPFv2 and OSPFv3 include a reliable flooding mechanism to
disseminate routing topology and Traffic Engineering (TE) information
within a routing domain. Given the effectiveness of these
mechanisms, it is convenient to envision using the same mechanism for
dissemination of other types of information within the domain.
However, burdening OSPF with this additional information will impact
intra-domain routing convergence and possibly jeopardize the
stability of the OSPF routing domain. This document presents
mechanism to relegate this ancillary information to a separate OSPF
instance and minimize the impact.
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 March 14, 2021.
Lindem, et al. Expires March 14, 2021 [Page 1]
Internet-Draft OSPF Transport Instance September 2020
Copyright Notice
Copyright (c) 2020 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 . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Requirements Language . . . . . . . . . . . . . . . . . . . . 3
3. Possible Use Cases . . . . . . . . . . . . . . . . . . . . . 3
3.1. MEC Service Discovery . . . . . . . . . . . . . . . . . . 3
3.2. Application Data Dissemination . . . . . . . . . . . . . 4
4. OSPF Transport Instance . . . . . . . . . . . . . . . . . . . 4
4.1. OSPFv2 Transport Instance Packet Differentiation . . . . 4
4.2. OSPFv3 Transport Instance Packet Differentiation . . . . 5
4.3. Instance Relationship to Normal OSPF Instances . . . . . 5
4.3.1. Ships in the Night Relationship to Normal OSPF
Instances . . . . . . . . . . . . . . . . . . . . . . 5
4.3.2. Tighter Coupling with Normal OSPF Instances . . . . . 5
4.4. Network Prioritization . . . . . . . . . . . . . . . . . 5
4.5. OSPF Transport Instance Omission of Routing Calculation . 6
4.6. Non-routing Instance Separation . . . . . . . . . . . . . 6
4.7. Non-Routing Sparse Topologies . . . . . . . . . . . . . . 7
4.7.1. Remote OSPF Neighbor . . . . . . . . . . . . . . . . 7
5. OSPF Transport Instance Information Encoding . . . . . . . . 8
5.1. OSPFv2 Transport Instance Information Encoding . . . . . 8
5.2. OSPFv3 Transport Instance Information Encoding . . . . . 8
6. Manageability Considerations . . . . . . . . . . . . . . . . 9
7. Security Considerations . . . . . . . . . . . . . . . . . . . 9
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 9
9. Acknowledgement . . . . . . . . . . . . . . . . . . . . . . . 9
10. References . . . . . . . . . . . . . . . . . . . . . . . . . 9
10.1. Normative References . . . . . . . . . . . . . . . . . . 9
10.2. Informative References . . . . . . . . . . . . . . . . . 10
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 10
Show full document text