Hi All
we have come across an issue on our 5412zl core switch, suddenly i got this message in the logs.
W 09/19/17 14:12:09 02581 ip: ST1-CMDR: IPv4: Duplicate IPv4 address 10.10.40.71
is detected on VLAN 1 with a MAC address of 9cdc71-04c27f (133 times
in 60 seconds)
My VLan 1 ip address is 10.10.40.71 when i run the command sh spanning tree
MRF-DC-CORE-SW# sh spanning-tree
Multiple Spanning Tree (MST) Information
STP Enabled : Yes
Force Version : MSTP-operation
IST Mapped VLANs : 1-4094
Switch MAC Address : 9cdc71-04c27f (the same mac address which is shown in the logs)
Switch Priority : 32768
Max Age : 20
Max Hops : 20
Forward Delay : 15
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The consequence we faced was all the vlans on the switch went to disable mode and then got enabled there was total down time of 12 mins,
belong is logs for one vlan
I 09/19/17 14:12:11 00839 stp: ST1-CMDR: CST Root changed from 32768:
0002b9-32e200 to 32768: 0019bb-93c700
I 09/19/17 14:12:12 00839 stp: ST1-CMDR: CST Root changed from 32768:
0019bb-93c700 to 32768: 001279-03da00
I 09/19/17 14:12:12 00435 ports: ST1-CMDR: port 1/I12 is Blocked by STP
I 09/19/17 14:12:12 00002 vlan: ST1-CMDR: Administrator_Vlan_54 virtual LAN
disabled
I 09/19/17 14:12:12 00002 vlan: ST1-CMDR: ITS_SAP_CG virtual LAN disabled
I 09/19/17 14:12:12 00435 ports: ST1-CMDR: port 1/I4 is Blocked by STP
I 09/19/17 14:12:12 00076 ports: ST1-CMDR: port 1/I4 in Trk54 is now on-line
I 09/19/17 14:12:12 00001 vlan: ST1-CMDR: Administrator_Vlan_54 virtual LAN
enabled
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Have any one has come across any such issue my environmnet is working prefectly since last 8months since the installation of core 5412 zl.
All your help and support is appreciated.
#Spanningtreeissue#54122zl#coreswitch#STP