Network Working Group A. Lindem
Internet-Draft Ericsson
Intended status: Standards Track A. Roy
Expires: October 7, 2013 S. Mirtorabi
Cisco Systems
April 5, 2013
OSPF Transport Instance Extensions
draft-ietf-ospf-transport-instance-10.txt
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
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This Internet-Draft will expire on October 7, 2013.
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Internet-Draft OSPF Transport Instance Extensions April 2013
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1. Requirements notation . . . . . . . . . . . . . . . . . . 4
2. OSPF Transport Instance . . . . . . . . . . . . . . . . . . . 5
2.1. OSPFv2 Transport Instance Packets Differentiation . . . . 5
2.2. OSPFv3 Transport Instance Packets Differentiation . . . . 5
2.3. Instance Relationship to Normal OSPF Instances . . . . . . 5
2.3.1. Ships in the Night Relationship to Normal OSPF
Instances . . . . . . . . . . . . . . . . . . . . . . 6
2.3.2. Tighter Coupling with Normal OSPF Instances . . . . . 6
2.4. Network Prioritization . . . . . . . . . . . . . . . . . . 6
2.5. OSPF Transport Instance Omission of Routing Calculation . 6
2.6. Non-routing Instance Separation . . . . . . . . . . . . . 7
2.7. Non-Routing Sparse Topologies . . . . . . . . . . . . . . 7
2.7.1. Remote OSPF Neighbor . . . . . . . . . . . . . . . . . 8
3. OSPF Transport Instance Information Encoding . . . . . . . . . 9
3.1. OSPFv2 Transport Instance Information Encoding . . . . . . 9
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