Description of the problem

A new set of OSN3500 is opened in the SDH network of a country, in which the SSN4SFD64 board cannot set the parameters of wavelength, port enable, FEC and other setup items on the network management, and the operation part of the return operation is successful.

Alarm message

No

Processing

1. Reset the board and replace it with another slot.

2, first of all, query the current single board and the history of the alarm without any abnormalities, with the command line to set the wavelength, FEC is still unsuccessful, to rule out the network management sent to the host command word error, due to the wavelength, FEC and other parameters are stored in the single-board registers, can not get the wavelength and other information that is unable to obtain the single-board register information, the single-board to enter the test state, to find out whether the single-board FPGA and 8505 chip can be read! The single board enters the test state and inquires whether it can read the single board FPGA and 8505 chip register information:

// Enter test state command

:optp:$bid,0,9b,1,30,08,c6,c6,c6,3c,3c,3c.

//get single board FPGA and 8505 chip register information

:optp:$bid,0,9b,1,1a,61,0,00,00,ff,0,1

:optp:$bid,0,9b,1,1a,61,18,00,00,ff,0,2

:optp:$bid,0,9b,1,1a,61,19,00,00,ff,0,2

//Exit test state command

:optp:$bid,0,9b,1,30,08,e7,e7,e7,a5,a5,a5; :optp:$bid,0,9b,1,30,08,e7,e7,e7,a5,a5; //exit test state command

Slot 29 is a normal board and the registers are read normally, while slot 20 is a faulty board and no register information is returned after the optp command is issued.

After R&D analysis, the main reasons why the single board in slot 20 cannot read the register information of single board FPGA and 8505 chip are as follows:

1) single-board software file corruption: using cfg-get-bdverinfo: command to check all the software versions, including the basic BIOS, extended BIOS, Software, etc., if an abnormal situation or inactive state need to reload the upgrade software.

2) The single board is in soft reset state, firstly, check whether the single board work indicator is normal on the spot, and check the single board work state through the following command: cfg-get-workstate: command.

3) If there is no problem in the first two items, there may be a failure of the single board (such as chip failure or connector damage), please re-plug the single board and check whether there is any physical damage to the single board.

By checking each software version of the single board, found that the BscBios version is normal, but inactive state, so the cause of the failure is in the process of loading the activation of individual board caused by unsuccessful, need to re-activate the operation. After reloading and upgrading the simulation package, the single board is normal.

Root Cause

1. Hardware failure of the single board

2、Single board software failure or related configuration errors

3, the single board where the slot bus or connector failure

Suggestions and Summary

None

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