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16.0 V-SAM
Overview
Test Methodology
Setup
General
Header
Bandwidth
Thresholds
Results
Configuration Test
Performance Test
Events
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Overview
V-SAM (VeEX Service Activation Methodology) is an automated Ethernet service activation test feature conforming to the ITU-T
Y.1564 standard, created to address and solve the deficiencies of RFC 2544:
RFC2544 was limited to test at the maximum throughput line rate for a single service. SAM is able to run multiple services
on a single 10/100/1000 or 10G Ethernet line at a bandwidth ranging from 0 to the line rate, allowing for more realistic
stream testing.
The Frame Delay Variation, also known as (packet) jitter was not included in RFC2544. Jitter is a critical parameter for
real time voice and video services. It is now part of the SAM test suite.
RFC2544 validates the service parameters like frame loss, throughput and latency, one after the other, while SAM allows
testing all the service critical parameters simultaneously. This results in significant time saving compared to RFC2544.
Comparison of RFC2544 and Y.1564
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Test Methodology
The purpose of the SAM test suite is to verify that the service is compliant to its Bandwidth Profile and Service Acceptance
Criteria. The test is broken down into two phases:
Phase 1: Service Configuration test
: The services running on the same line are tested one by one to verify the correct
service profile provisioning.
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