Issue 5 November 2000
363-206-208
End-To-End Installation Tests for Ring Applications of the DDM-2000 OC-12 Multiplexer
Lucent Technologies - Proprietary
See Notice on first page
Automatic Protection Switching
Description
This test will verify ring protection switching in the event of a fiber cut.
Procedure
(1) At any node in the ring, verify that no alarms exist.
(2) Enter the command rtrv-state-path;
(3) Under the ’act’ or active column, note whether a ’y’ is in mb-1 (main-b-1) OLIU
or mb-2 (main-b-2) OLIU.
(4) Disconnect the receive (IN) fiber of the active OLIU receiving the traffic (as
determined by the previous step).
(5) Enter the command rtrv-state-path;
(6) Verify that all traffic has switched from the previously active OLIU to the OLIU
with the fiber still connected.
(7) Reconnect the receive fiber.
(8) Verify alarms clear and repeat this procedure at each node in the ring.
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