Several time ago I've foud that NX-OS sends STM_LEARNING_OVERLOAD
EET: %FWM-4-STM_LEARNING_OVERLOAD: system experiencing unusual number of new address notifications - deferring learn notification for 120 seconds
After this message cisco floods traffic to all ports.
The main problem I can't find the source besause this is only message I get. No loops are detected so I can't further to investigate problem.
Is there some additional commands that help to debug this problem. Mac move detection is activated:
# show running-config | include mac mac address-table notification mac-move
Can someone please tell. When I issue detail command - is there interface (in this case 1/38) which can cause problem?
# show spanning-tree active detail MST0000 is executing the mstp compatible Spanning Tree protocol Bridge Identifier has priority 4096, sysid 0, address 002a.6a60.d101 Configured hello time 2, fex hello time 12, max age 20, forward delay 15 We are the root of the spanning tree Topology change flag not set, detected flag not set Number of topology changes 1039 last change occurred 0:14:24 ago from Ethernet1/38 Times: hold 1, topology change 35, notification 2 hello 2, max age 20, forward delay 15 Timers: hello 0, topology change 0, notification 0
P.P.S. Switch software version:
Software BIOS: version 2.0.0 Power Sequencer Firmware: Module 1: v4.0 Module 1: v4.0 Fabric Power Sequencer Firmware: Module 1: version v4.0 Microcontroller Firmware: version v18.104.22.168 QSFP Microcontroller Firmware: Module 1: v22.214.171.124 CXP Microcontroller Firmware: Module not detected kickstart: version 7.2(1)N1(1) system: version 7.2(1)N1(1) BIOS compile time: 12/19/2014 kickstart image file is: bootflash:///n6000-uk9-kickstart.7.2.1.N1.1-new.bin kickstart compile time: 10/14/2015 19:00:00 [10/15/2015 09:02:08] system image file is: bootflash:///system_7_2_1_N1_1_ipsada.bin system compile time: 10/14/2015 19:00:00 [04/10/2016 11:51:48] Hardware cisco Nexus 6001 Chassis ("Nexus 64 Supervisor")