Description of the problem

How to determine whether Huawei SDH equipment multiplexing segment inversion is successful.

Alarm Message

APS_INDI

Processing

1. Analyze the k-byte event, first analyze whether the page switch is correct:

1), For the ring multiplexing segment, the

East-to-East switch must be "XC_EXECUTE 0x0002".

Westbound inversion must be "XC_EXECUTE 0x0003".

Through stations must be "XC_EXECUTE 0x0001".

Inversion recovery must be "XC_EXECUTE 0x0000".

2), For 1+1 linear multiplexed segments, the

Inversion must be "XC_EXECUTE 0x0001".

Restore must be "XC_EXECUTE 0x0000".

3), For 1:N linear multiplexed segments, the

Inversion must be "XC_EXECUTE 0x000n"//n is the protected serial number.

Recovery must be "XC_EXECUTE 0x0000".

2. If the inversion is successful, it is necessary to see whether the circuit board has received the correct inversion command.

For line boards of NGSDH equipment R6 (4.xx) and below, the line boards do not record the inversion commands issued by the cross boards, and it is impossible to see whether the inversion has been executed correctly.

For line boards of version R7 and above (5.xx and above), the line boards record the inversion commands issued by the cross-board. If the line board received the page switch command (0x2562) issued by the cross-board accurately at the point in time when the inversion occurred, the

Example, from bb4.log (red font):

2010-2-6 16:33:51 0xA 25 62 01 00 03 ff

Then it means that the communication between the board and the cross-board is normal, and you need to see whether the board execution is successful or not (the current maintenance version does not have any defects of the board execution failure).

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