System testing 7-19
6200 Packet-Optical Platform Installation, Commissioning, and Testing Procedures
Release 1.1 009-6200-201 Draft Issue 1
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2014 Ciena
®
Corporation September 2014
Procedure 7-4 (continued)
Testing STM-1/4/16/64/OC-3/12/48/192 protection switching with traffic on 12xE3DS3 WP service
interface
Step Action
Testing all the E3/DS3 ports in the 12xE3DS3WP service interface, both at the near and far end
5 Feed E3/DS3 traffic from the test set to the first E3/DS3 port in the I/O Panel
and the remaining E3/DS3 ports are connected in tandem so that all the ports
are sourced from the same test set.
6 Loopback all the E3/DS3 ports in the I/O Panel of the far end network
element. The traffic generated at the test set will be looped back in the I/O
panel to the test set. The E3/DS3 ports of the near and far end are connected
through the optical ports which will transport the signal generated by the test
set.
7 Verify ‘0’ bit errors at the E3/DS3 test set.
8 Record the data in Table 12-4 on page 12-6.
The result verifies that all the E3/DS3 ports function correctly.
Testing protection switching on the E3/DS3 ports
9 Determine the next step.
10 Connect the test set to a single E3/DS3 port in the I/O Panel and loop back
in the other node.
11 Generate a loss of signal condition (LOS) on the working path by
disconnecting the fiber.
Traffic switches from the working to the protection path within 60 ms.
12 Put fiber back on the working path.
Note: There should not be any switching between E3/DS3 work circuit pack
or E3/DS3 protect circuit pack.
After WTR time expires, the traffic will switch from protection to working path.
If the protection type is Then go to
SNCP/UPSR step 10
1+1 MSP/APS step 13 on page 7-20
If the protection type is Then go to
revertive step 15 on page 7-20
non-revertive step 18 on page 7-20
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