Sync-E
Synchronous Ethernet (or Sync-E) is an enhancement of legacy Ethernet at the
physical layer to provide more accuracy when synchronisation is recovered from
the line. Testing Sync-E involves validating the physical performance according
to the ITU-T G.8262 recommendation and proving conformance of the management
protocol (ESMC) to the ITU-T G.8264 recommendation 1588v2 PTP
The IEEE 1588v2 Precision Time Protocol (PTP) enables the transfer of timing
across a Packet Transport Network. Testing 1588v2 PTP involves proving the
accuracy and performance of clock recovery according to the ITU-T G.8261 Test
Cases. It also includes testing protocol conformance as well as evaluating the
accuracy of Time of Day (ToD) and Frequency under Real Network conditions.
CES (Pseudowire / SAToP / CESoP / TDMoIP) Circuit Emulation Services (CES)
enable the transfer of TDM (E1, T1, etc.) traffic over Ethernet. Testing CES
involves proving the accuracy of data and timing transfer according the the
ITU-T G.8261 and MEF-18 Test Cases. Ethernet
OAM (Y.1731 / 802.1ag) Ethernet Operations, Administration
and Management (OAM) enables Ethernet networks to provide fault detection and
reporting as well as manage and monitor the performance. Additionally, it
provides for protection of service in case of faults. Testing Y.1731 and 802.1ag
involves creating targetted fault and impairment conditions and validating the
correct operation and reporting of the Ethernet OAM elements
Seitenanfang
Seite drucken