Symptom

Module N9K-X97160YC-EX reported L2ACLRedirect diagnostic failure as below: `show logging log` 2019 Aug 17 23:03:01 AOJPKKSD01A %DIAG_PORT_LB-2-L2ACLREDIRECT_LOOPBACK_TEST_FAIL: Module:1 Test:L2ACLRedirect Loopback failed 10 consecutive times. Faulty module: affected ports:1,33 Error:Loopback test failed. Packets lost on the SUP in the receive direction 2019 Aug 17 23:03:01 AOJPKKSD01A %DIAGCLIENT-2-EEM_ACTION_HM_SHUTDOWN: Test has been disabled as a part of default EEM action 2019 Aug 17 23:03:01 AOJPKKSD01A %MODULE-4-MOD_WARNING: Module 1 (Serial number: FOC225151RC) reported warning on ports Ethernet1/1 (Ethernet) due to Loopback test failed. Packets lost on the SUP in the receive direction in device DEV_SUPERVISOR_CTRL (device error 0x41830059) 2019 Aug 17 23:03:01 AOJPKKSD01A %MODULE-4-MOD_WARNING: Module 1 (Serial number: FOC225151RC) reported warning on ports Ethernet1/9 (Ethernet) due to Loopback test failed. Packets lost on the SUP in the receive direction in device DEV_SUPERVISOR_CTRL (device error 0x41830059)

Conditions

N9K-X97160YC-EX running NXOS 9.2(3) and having extra TCAM resource in running-config hardware access-list tcam region ing-sup 0 `show running` hardware access-list tcam region ing-racl 0 hardware access-list tcam region ing-l2-qos 0 hardware access-list tcam region ing-l3-vlan-qos 0 hardware access-list tcam region ing-sup 0 <<<<<< This is unexpected and caused the diagnostic to fail hardware access-list tcam region ing-l2-span-filter 0 hardware access-list tcam region ing-l3-span-filter 0 hardware access-list tcam region span 0 hardware access-list tcam region egr-racl 0 hardware access-list tcam region egr-sup 0 hardware access-list tcam region ing-redirect 0

Workaround

Removed the unexpected TCAM configs and reloaded N9K.

Further Problem Description