Benchmarking Terminology for Protection Performance

This document provides common terminology and metrics for benchmarking the performance of sub-IP layer protection mechanisms. The performance benchmarks are measured at the IP-Layer, avoiding dependence on specific sub-IP protection mechanisms. The benchmarks and terminology can be applied in methodology documents for different sub-IP layer protection mechanisms such as Automatic Protection Switching (APS), Virtual Router Redundancy Protocol (VRRP), Stateful High Availability (HA), and Multi-Protocol Label Switching Fast Reroute (MPLS-FRR). Protection Performance Table of Contents 1. Introduction 3 2. Existing definitions 6 3. Test Considerations 7 3.1. Paths 7 3.1.1. Path 7 3.1.2. Working Path 8 3.1.3. Primary Path 8 3.1.4. Protected Primary Path 8 3.1.5. Backup Path 9 3.1.6. Standby Backup Path 10 3.1.7. Dynamic Backup Path 10 3.1.8. Disjoint Paths 10 3.1.9. Point of Local repair (PLR) 11 3.1.10. Shared Risk Link Group (SRLG) 11 3.2. Protection Mechanisms 12 3.2.1. Link Protection 12 3.2.2. Node Protection 12 3.2.3. Path Protection 12 3.2.4. Backup Span 13 3.2.5. Local Link Protection 13 3.2.6. Redundant Node Protection 14 3.2.7 State Control Interface 14 3.2.8. Protected Interface 15 3.3. Protection Switching 15 3.3.1. Protecti ...