1
Scope
2 References
3 Definitions
4 Abbreviations
5 Conventions
6 General Frame Relay performance
reference model
6.1 Frame Relay virtual connection
portions and measurement points
7 Method for specifying availability
7.1 General definition of availability
7.2 Availability model
7.3 Definition of
available/unavailable state
7.4 Methods for assessing availability
7.5 Availability parameters
8 Availability performance
objectives
8.1 Availability Ratio
8.2 Mean Time Between Outages
Annex A – Determining
availability states by use of performance parameter thresholds
A.1 Frame Relay virtual connection
availability
Annex B –Use of
Frame Relay STATUS Messages or Alarm Indication as availability criteria
Annex C – Use of FR OAM non-latching loopback messages for
estimation of Frame Relay connection availability when using connectivity as
the outage criteria
C.1 Introduction
C.2 The declaration from connection
available to connection unavailable
C.3 The declaration from connection
unavailable to connection available
C.4 In-service estimation of availability
Annex D – Use of FR OAM to monitor Frame Loss Ratio in order to
assess availability
Annex E – Calculation of Mean Network Availability Ratio
based on the measurement of individual Virtual Connection Unavailability
Appendix I – Sampling
estimation of PVC availability parameters
I.1 A minimal test for PVC service availability
I.2 Procedures for estimating PVC service availability
I.3 Procedures for estimating mean time between PVC service outages