vCenter unreachable after UCS chassis was mistakenly unplugged from UCS Fiber Interconnect and lost storage access

Products

• VMware vCenter Server
• VMware vSphere ESXi

Issue/Introduction

• UCS host chassis in question has been recovered since being mistakenly unplugged from the UCS Fiber Interconnect
• Storage networking is impacted due to a mismatch of vmnics on the ESXi host in question's storage vSwitch
• iSCSI storage is being used in the environment

Environment

VMware vCenter Server

VMware vSphere ESXi

Cause

There is a known issue with how Cisco UCS will change the order of vmnics being presented to ESXi

Resolution

Reconfigure the storage vSwitch with the correct vmnics and their MAC addresses being shown in the Cisco UCS Manager UI:

• Assign Physical Adapters to a vSphere Standard Switch 

Reconfigure iSCSI Adapters if needed:

• Configuring Software iSCSI Adapters in the VMware Host Client 

Additional Information

How VMware ESXi determines the order in which names are assigned to devices

Cisco Bug: CSCuv34051