Cause why a message is displayed indicating that a board is occupied by a cable in an attempt to delete an NE unreachable by the NMS

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The correct operations are as follows: Delete the cables on the NE and then delete the NE.

Other related questions:
Cause why the error message is displayed indicating that an OSN 6800 subrack fails to be deleted from an NE because the subrack has boards installed
This is because the subrack still has boards not deleted. You can delete the subrack after deleting the boards that have been successfully added to the subrack from the subrack on the NMS. 1. For an OSN 8800 T32/T64 subrack, you need to manually delete logical boards except ATE and FAN before deleting the subrack. 2. For an OSN 8800 T16 subrack, you need to manually delete logical boards except EFI, PIU, ATE, FAN, and AUX (in slot 21) before deleting the subrack. 3. For an OSN 6800 subrack, you need to manually delete logical boards except PIU, AUX, FAN, and EFI boards before deleting the subrack. 4. For an OSN 8800 platform subrack, you need to manually delete logical boards except PIU, AUX, FAN, and EFI boards before deleting the subrack. 5. For an OSN 8800 universal platform subrack, you need to manually delete logical boards except FAN and EFI boards before deleting the subrack.

Cause why an error message is displayed indicating full service configuration in an attempt to configure a third ODU2 service on the TEM28 board
The total backplane-side bandwidth of the TEM28 board is 20G (equivalent to two ODU2 services). Therefore, the error message is displayed when you attempt to configure a third ODU2 service.

Reason for locking an account during NE creation
The possible cause is that the account is used by multiple users to log in to NEs, and as a result the account is locked. You can wait 15 minutes for the account to be unlocked.

Why does the NMS tool display an error message when it attempts to load some MIB files for S series switches
For S series switches (except the S1700), when the NMS tool is used to load some MIB files, error message "cannot load this MIB, error: ParseError,no content found, except 'DEFINITIONS::=BEGIN';line:1)" or "cannot load this MIB, error: MIB Parsing failed" is displayed. The reason is that some MIB files, such as RFC1155-SMI, RFC-1212, and SNMPv2-CONF, only define syntax and do not contain MIB objects. These MIB files are referenced by other MIB files. For example, RFC-1212 defines how MIB files are written, and RFC-1215 defines the syntax of TRAP-TYPE macro. Ignore these messages when you are loading these MIB files.

Cause why "STND" is displayed in the NE Explorer for the OSN 8800 TN54TOA board
It is a reserved design, because there are boards in compatible mode (COMP) and boards in standard mode (STND).

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