Host vTEP Tunnels down after upgrading transport nodes when utilizing Intel ENS drivers
Article ID: 380181
Updated On:
Products
VMware NSX
Issue/Introduction
After upgrading NSX prepared transport nodes, vTEP tunnels will report as down and do not recover
Environment
VMware NSX-T Data Center 3.x
Cause
An issue within the ENS Intel driver i40_ens can cause ARP packets to loop back the packet into the host instead of forwarding out the uplinks thus preventing ARP resolution.
This can occur when using a driver version below 1.4.1.0
Resolution
This is resolved with Intel driver i40en_ens version 1.4.1.0 or higher, driver download is available via Broadcom Support Portal
Additional Information
For assistance on installing or upgrading vibs, refer to the following article:
"esxcli software vib" commands to patch an ESXi 6.x/7.x/8.x host
To view recommended driver and firmware combinations, refer to the compatibility guide:
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