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An SSN1SLH1 Board Cannot Be Added due to Restricted Bus Speed

Publication Date:  2012-07-25 Views:  80 Downloads:  0
Issue Description
In the deployment of the OptiX OSN 3500, the N1SLH1 fails to be added to slot 2 in the T2000. The NE software version is and the cross-connect physical board is the SXCSA board. 
Alarm Information
Handling Process
The engineers configure the SXCSA board to the logical cross-connect board of the equipment. Then, the N1SLH1 board is successfully added to slot 2. 
Root Cause
The engineers check whether the versions are matching and find that the current NE software version supports the N1SLH1 board. The engineers attempt to add the board through the command line, but the addition still fails. Hence, this problem is not caused by the T2000. The engineers check the equipment configuration and find that the EXCSA board is configured as the logical board of the equipment. The bus speed of the EXCSA board used in Huawei NG SDH equipment is 622 Mbit/s, but the bus speed of the N1SLH1 board is 2.5 Gbit/s. Hence, the two boards fail to work together normally. 
1. The bus speed of the N1SLH1 board is 2.5 Gbit/s. It cannot work together with the boards with the bus speed 622 Mbit/s, such as GXCSA, EXCSA, or UXCSA. It can only work together with the SXCSA, IXCSA, or other cross-connect boards with the bus speed 2.5 Gbit/s.
2. Although the physical board is SXCSA, the configuration is affected if the logical board is configured incorrectly.
3. Because the SXCSA supports multi-board ID function, when the engineers query physical boards in a new NE of the T2000, the returned result is not always the real physical board type. If the support from the version is available, the type of the logical board configured should be consistent with the physical board type.