Best answer by JonView original
Nutanix with Nexus Switch
Dear Expert, My Nutanix environment as per below: 4block of Nutanix ( 8 Node ) connect to Nexus Access Switch with 10G SPF cable. Hypervisor: VMware 5.5 Issue: from vCenter we detect the host keep disconnected randomly. and vCenter become HANG Workaround: Ping continuously on Host. Result No packet drop can you please advise what need to do Regards, Hamballi
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please post your networking config on ESXi and Nexus
Nutanix doesn't work well on FEX switches e.g. Nexus 2000 series. Another problem is whether your vSphere 5.5 is it updated to 5.5 Update 3b? I have this disconnection issue on some of my 5.5 hosts which are on Update 3a.
That said, we do have a recommended switch configuration document for Nexus switches, posted here: https://portal.nutanix.com/#/page/kbs/details?targetId=kA032000000TT4kCAG
It sounds like there might be a mismatch between how the switch is configured, and how the vSwitches on the host are configured.
For example, if you've set up Cisco VPC on the switchports, but have not setup LACP or static etherchannel on the ESXi side, it will cause problems like you describe.
Thanks for your advice, I will check with network guys regarding VPC & LACP