Test Plan for Optical Grooming Switches - Light Reading

Protection route.
Available resources.
Any other comments:
None
TCA024: Fail protection arm of 1+1 SNCP
Purpose:
Confirm correct operation of 1+1 SNCP circuit in event of loss of protection
Test Plan for Optical Grooming Switches
Test method:
1. Following on from successful completion of TCA023
2. Use switch management system to identify protection route for the 1+1 protected SNCP
circuit – and break a fibre on that protection route
Expected result:
• No loss of traffic on either STS-1 or STS-3c circuit
• Alarm raised to indicate and locate loss of protection
• Mesh restoration takes place to set up a “new” protection route – so we again end up
with 1+1 protected circuit
Any other comments:
None
TCA25: Test operation of SNCP circuit in dual fault scenario
Purpose:
Confirm that when both working and protection arms of 1+1 SNC circuit are broken then
mesh restoration takes place
Test method:
1. Following on from successful completion of TCA023
2. Break fibre PAR#5-NY#3 (working path for STS-1 circuit)
Expected result:
• Protection switching should now take place onto the “new” protection arm
• STS-1 circuit sees sub-50ms traffic loss
• New routing is obvious from switch management system
Any other comments:
None
BLOCK 3. Trail reservation and Inverse Multiplexing.
END OF BLOCK 2
Test Block description:
Creation of a OC-192 trail over four x OC-48 trunks. Reserving network resources
for later use.
Procedure:
Blocks of tests to proceed in sequence from TCA26 to TCA31
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