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When OSN 1500bandwidth is not shared, ATM services are processed at the ATM layer only at the source and host network elements through the ATM service processing boards. No ATM layer processing is performed on the intermediate network elements through which the service passes, and only SDH time slot penetration is performed. In this case, each ATM service shares the VC-3/VC-4 channel exclusively. Each ATM service can converge at the center node and then converge to the STM-1 or STM-4 optical port output. the OSN3500 cannot create ATM 622M services and needs to adjust the VCTRUNK of the bound VC4 .
Failure Category
- ATM/IMA
- Ethernet Fault
Phenomenon Description
Unable to create 622M service.
Product
- OptiX OSN 1500A/1500B
- OptiX OSN 2500
- OptiX OSN 3500 II
- OptiX OSN 3500
- OptiX OSN 7500
Cause Analysis
The four VC4 virtual cascades bound are on the first ATM processing unit, and the source or the host of the built connection is the same external port, and the resources occupied by the source and the host are 622M×2=1244M, which exceeds the maximum bandwidth of a single ATM processing unit.
Operation steps
- Delete the VCTRUNK binding the 1st to 4th VC4 time slots.
- Create VCTRUNKs bound to VC4 time slots 5 through 8.
Reference
None.
