We were check state to STM-16 protection ring and U2000 dont show protection in main topology, We think
that protection had been delete, so we try to create again but U2000 show error that say: "Protection group
ID already exist". For check if protection had been unconfigured we run SDH Protection Subnet Search and
dont find nothing, but we search in one equipment of ring in NE Explorer, Configuration, Ring MS and we find the protection configure.
For SDH Protection Subnet Search find the lost protection, follow next steps:
- Check in NE Explorer, configuration, Ring MS of each equipment by ring if switchting status is Forced Switching status or Manual Switching status and normalized with clear option.
- When switchting status is Idle state in all equipments ring, run again SDH Protection Subnet Search
- In this way SDH Protection Subnet Search will find protection, configure with corresponding ring and
check in main topology and you see protection again.
SDH Protection Subnet Search dont will find any new protection if It is switching.