Test Plan for Optical Grooming Switches - Light Reading

Switch management system shows loss of protection warning
Other comments:
None
Test Plan for Optical Grooming Switches
TCA016: Confirm mesh restoration is used when working and protection 1+1 MSP
trunks are failed
Purpose:
Confirm mesh restoration is used when working and protection 1+1 MSP trunks are failed
Test method:
1. Following on from successful completion of TCA015
2. Pull out card PAR#6
Expected result:
Mesh restoration takes place and routes STS-1 via 2 hop route Par#8-PAR#5-
NY#3-NY#4-LON#4-LON#5
Record duration of loss of traffic on STS-1 circuit
STS-3c circuit should see no loss of traffic
Other comments:
None
TCA017: Confirm support for BLSR and mesh restoration on same switch – part A
Purpose:
To confirm same switch can support BLSR and mesh restoration at same time
Test method:
1. Start off with “clean” configuration A – no alarms and no circuits configured
2. Set up unprotected STS-1 circuit from LA#8 to NY#6
3. Set up unprotected STS-3c circuit from NY#7 to LON#5
4. Confirm STS-1 circuit is routed via BLSR
5. Identify which LA-NY fibre is the working fibre for STS-1 and break the working fibre
Expected result:
BLSR should switch
STS-1 circuit should see sub-50ms traffic loss
STS-3c circuit should see no loss of traffic
Other comments:
None
TCA018: Confirm support for BLSR and mesh restoration on same switch – part B
Purpose:
To confirm same switch can support BLSR and mesh restoration at same time
Test method:
1. Following on from completion of TCA017
2. Break fibre LON#4-NY#4
Expected result:
STS-1 circuit should be unaffected – no loss of traffic
Switch management system should show LON#4-NY#4 fibre cut
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