Skip to main content
NetApp Knowledge Base

One port of a compute node is flapping constantly

  1. Last updated
  2. Save as PDF
Views:
579
Visibility:
Public
Votes:
0
Category:
netapp-hci
Specialty:
hci
Last Updated:

Applies to

NetApp HCI (Compute Nodes)

Issue

  • esxcli network nic list command executed at the compute node shows the Link Status as Down and Speed as 0 during flapping

HCI_flapping_NIC.png

  • Switch logs shows that the port that the flapping port connected to is going up and down constantly

011126: .<DATE TIME>: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/18, changed state to up
011129: .<DATE TIME>: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/18, changed state to down
011130: .<DATE TIME>: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/18, changed state to up
011133: .<DATE TIME>: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/18, changed state to down
011134: .<DATE TIME>: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/18, changed state to up
011135: .<DATE TIME>: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/18, changed state to down

  • vobd.log file shows the Failed criteria: 128 and down messages for the flapping port

<DATE TIME>: [netCorrelator] 2997223648873us: [vob.net.pg.uplink.transition.down] Uplink: vmnic3 is down. Affected portgroup: HCI_Internal_Storage_Management_Network. 1 uplinks up. Failed criteria: 128
<DATE TIME>: [netCorrelator] 2997223648874us: [vob.net.pg.uplink.transition.down] Uplink: vmnic3 is down. Affected portgroup: Management_Network. 1 uplinks up. Failed criteria: 128
<DATE TIME>: [netCorrelator] 2997223648971us: [vob.net.vmnic.linkstate.down] vmnic vmnic3 linkstate down
<DATE TIME>: [netCorrelator] 2997234550242us: [esx.problem.net.redundancy.lost] Lost uplink redundancy on virtual switch "vSwitch0". Physical NIC vmnic3 is down. Affected port groups: "HCI_Internal_Storage_Management_Network", "Management_Network", "HCI_Internal_Storage_Management_Network", "Management_Network"

  • hostd log files shows up and down messages

<DATE TIME> info hostd[2155779] [Originator@6876 sub=Vimsvc.ha-eventmgr] Event 12675 : Lost uplink redundancy on virtual switch "vSwitch0". Physical NIC vmnic3 is down. Affected portgroups:"HCI_Internal_Storage_Management_Network", "Management_Network", "HCI_Internal_Storage_Management_Network", "Management_Network".
<DATE TIME> info hostd[2208542] [Originator@6876 sub=Vimsvc.ha-eventmgr] Event 12679 : Uplink redundancy restored on virtual switch "vSwitch0", portgroups: "HCI_Internal_Storage_Management_Network", "Management_Network", "HCI_Internal_Storage_Management_Network", "Management_Network". Physical NIC vmnic3 is up.

  • vmkernel log files shows up and down messages

vmkernel.log:<DATE TIME> cpu14:2097827)ixgben: ixgben_CheckLink:2745: Link is down for device vmnic3 (0x4308a3c8f0c0)
vmkernel.log:<DATE TIME> cpu14:2097827)ixgben: ixgben_CheckLink:2745: Link is up for device vmnic3 (0x4308a3c8f0c0)

 

Sign in to view the entire content of this KB article.

New to NetApp?

Learn more about our award-winning Support

NetApp provides no representations or warranties regarding the accuracy or reliability or serviceability of any information or recommendations provided in this publication or with respect to any results that may be obtained by the use of the information or observance of any recommendations provided herein. The information in this document is distributed AS IS and the use of this information or the implementation of any recommendations or techniques herein is a customer's responsibility and depends on the customer's ability to evaluate and integrate them into the customer's operational environment. This document and the information contained herein may be used solely in connection with the NetApp products discussed in this document.