JDS Uniphase HST-3000 - Measuring Service Disruption Time

Chapter 3 Ethernet Testing
Measuring service disruption time
80 HST-3000 Ethernet Testing User’s Guide
9 Verify that the Data LED is green, indicating that frames
have been detected.
10 Optional. If you want to insert bit errors, press the Action
soft key again, and then select the action for error inser-
tion.
The HST-3000 transmits traffic with the BERT pattern in the
payload over the link. Results associated with BER testing
appear in the BERT results category (see “L2 BERT Stats
results” on page 305).
Measuring service disruption time
You can use two HST-3000’s in an end-to-end test to measure
the service disruption time resulting from a switch in service to
a protect line.
To measure service disruption time
1 If you haven’t already done so, launch the Terminate
application for the circuit you are testing (see “Launching
an application” on page 28), and then select the
Layer 2 Traffic test (see “Selecting a layer 2 test” on
page 46).
2 Initialize the link (see “Initializing the link for Ethernet
testing” on page 47).
3 On the near end HST, do the following:
a Configure your test (see “Configuring layer 2 Ethernet
tests” on page 51).
b Press the Home button to view the test results display.
c If the unit on the far end is in local loopback mode,
press the Action soft key, and then select
Start Traffic.