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%CONST_DIAG-SP-3-HM_TEST_FAIL: Module 7 TestMacNotification consecutive failure count:5

Can anyone tell me what this error mssg means, what the severity is, and what the resolution is?


%CONST_DIAG-SP-3-HM_TEST_FAIL: Module 7 TestMacNotification consecutive failure count:5


Thanks for any feedback.

  • LAN Switching and Routing

Hi, See this



See this:

TestMacNotification Diag Test Error

Problem Symptom:

Following messages may be seen on the console :

*Mar 10 10:25:53.562: %FABRIC_INTF_ASIC-DFC9-4-FABRICCRCERRS: Fabric ASIC 0: 322 Fabric CRC error events in 100ms period
*Mar 10 10:26:31.071: %CONST_DIAG-SP-3-HM_TEST_FAIL: Module 9 TestMacNotification consecutive failure count:5
*Mar 10 10:26:31.071: %CONST_DIAG-SP-6-HM_TEST_SP_INFO: TestMacNotification[9]: last_busy_percent[33%], Tx_Rate[3077], Rx_Rate[1302]

Root Cause :

This TestMacNotification could fail if there is some issue with the bridge ASIC/data path. 
One of the reason could be some corrupted packets enter the bridge asic and cause the memory buffers to get locked up.

Troubleshooting and Recommendation:

1. Check if there any Fabric CRC errors *"*FABRICCRCERRS" in the logs.

    If there are Fabric CRC errors followed by TestMacNotification test failure then issue could be because of CSCto55567 , upgrade to release 12.2(33)SRE5 or higher.

2. If TestMacNotification test fails without Fabric CRC error then contact the BU, it requires complete data path debugging.

Related DDTS: CSCto55567 


Hope this helps.

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