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The NE enters the installation state after the downloading of data due to the inconsistency between the subrack type in the NMS and the physical subrack type.

Publication Date:  2012-07-25 Views:  37 Downloads:  0
Issue Description
After field engineers replace the SCC of the OptiX Metro 1000V3, engineers start to download data. An error occurs during the downloading. The system prompts "The subrack type is inconsistent with the practical type, error code: 38659". The NE enters the installation state. 
Alarm Information
Inconsistency between the subrack type and the physical subrack type 
Handling Process
1 Engineers query the OptiX Metro 1000V3 subrack type in the NMS and find that it is Type II subrack. During the creation of the OptiX Metro 1000V3, the default subrack type is used. At this time, it cannot be modified. Engineers doubt that the newly replaced SCC is faulty. 2 Engineers replace the second SCC and download data. The system gives the same prompt. The NE enters the installation state.
3 The preceding operations indicate that the SCC is normal. The fault results from the inconsistency between the NMS data and the data supported by the equipment. As a result, the NE software verification fails. The equipment is in the installation status.
4 Engineers recreate the NE and upload data to the newly replaced SCC. It is found that the subrack type is Type I. The NE is normal after the service configuration. Hence, the problem results from the inconsistency between the subrack type in the NMS and the subrack type of the SCC. The old SCC corresponds to Type II subrack. The new SCC corresponds to Type I subrack.
5 Engineers query the mapping relation between the OptiX Metro 1000V3 SCC and the subrack type. Through the query of the manufacturing information of the new SCC, it is found that the BOM is 03037838 and the 46SCBC01 board is used. Currently, the OptiX Metro 1000V3 uses two types of SCCs, that is, 46SCB and 46SCBE. The 46SCB is used for Type I subrack. The 46SCBE is used for Type II subrack. The manual settings are not allowed. If the subrack type of the NMS is inconsistent with the subrack type of the equipment, the NE software verification fails in the case of the data downloading. As a result, the NE enters the installation state. 
 
Root Cause
The subrack type in the NMS is inconsistent with the physical subrack type. 
Suggestions
Engineers should distinguish subrack types of the OptiX Metro 1000V3. 

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