Problem description

Users are using osn1500 equipment in the opening process, the network management can not query the equipment's tributary boards, in the corresponding slot to add a single board, the network management reported COMMUNFAIL alarm, the software version of the network element is: 5.36.18.50p01

Alarm message

communfail

Processing

1. After resetting the main control board of the device, the fault phenomenon still exists;

2、After hard resetting the aux board of the equipment, the communfail alarm of the branch slot disappears, and the network management shows that the branch board is normal.

3, because in the process of the project opening more than one set of equipment appeared in the phenomenon, the collection of data R & D analysis, the conclusion is that the ssr2aux single board, in the normal course of operation, in the absence of any man-made operation of these single boards, there may be a random Ethernet communication port can not be a phenomenon from the network management of the performance of a single board of the business of the unexplained report Ethernet communication failure alarms. The reason is that the Ethernet switching chip bcm5328 used by the single board has defects, that is, a communication port may randomly appear communication failure, at this time, the specific performance of the port is link state, self-negotiation state is normal, but there is no send and receive packets, the problem can be solved by upgrading to version 5.36.18.55.

Root cause

The main control board of the device is faulty.

2. Failure of the auxiliary board of the device;

3、Version problem of the network element;

Suggestion and summary

None