1
Scope
1.1 General
1.2 Parameters to be measured
1.3 Accuracy requirements of
measurements
2 References
3 Definitions
4 Abbreviations
5 Measurement Methodologies
5.1 Use of test traffic to estimate performance parameters
5.2 Use of OAM Frames to estimate
performance
6 Use of FRF.19 OAM Frames to
measure the Frame Relay performance parameters
6.1 Measurement duration, frequency and
sampling rates
6.2 OAM frame format
6.3 Network initialisation and
awareness of OAM capabilities within a network
6.4 Measurement of frame loss in both
directions
7 Procedures to estimate frame
transfer delay
7.1 Measurement procedure description
7.2 Delay measurement initiation
7.3 Transfer delay information frame
turnaround
7.4 Calculation of frame transfer delay
7.5 Delivery of delay results
7.6 Error handling
8 Procedures for the estimation of frame delay jitter
9 Procedures for estimation of frame loss
ratio/frame delivered ratio
9.1 Procedures for frame delivery
ratio measurement
9.2 Frame delivery ratio initiation
9.3 Frame delivery ratio measurement
9.4 Delivery of frame delivery ratio
results
9.5 FDR error handling
10 Procedures for data delivery ratio measurement
10.1 Datadelivery ratio
initiation
10.2 Data delivery ratio measurement
10.3 Delivery of data delivery ratio
results
10.4 DDR error handling
11 Frame relay service availability estimation procedures
Annex A – Measurement architectures
applicable to the use of test traffic for the estimation of performance
A.1 General considerations and
measurement methodologies
A.2 Frame relay performance parameters
and measurement architectures
A.3 Loopbacks
Annex B – OAM message
formats
B.1 Basic FR-OAM frame structure
B.2 Frame transfer delay information
field
B.3 Frame transfer delay results
information field
B.4 Frame delivery ratio sync
information field
B.5 Frame delivery ratio results information
field
Appendix
I – OAM message flows
I.1 Use of Hello messages for network discovery
I.2 FTD measurement
I.3 FDR/DDR measurement
Appendix II – Example of frame
delivery ratio (loss) calculations
II.1 Ingress processing
II.2 Egress processing