5.5 V-SAM
(100G only)
Service Attributes - Bandwidth Profile
Overview
V-SAM is not supported for 400G as yet.
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:
• RFC 2544 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 RFC 2544. Jitter is a critical parameter
for real time voice and video services. It is now part of the SAM test suite.
• RFC 2544 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
RFC 2544.
Comparison of RFC 2544 and Y.1564
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.
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