Updating ZSphere IPMI information fails to establish an RMCP+ session

Issue/Introduction

This article helps troubleshoot RMCP+ session establishment failures when updating IPMI information in ZSphere.

Symptoms

• Updating IPMI information fails with Error: Unable to establish IPMI v2 / RMCP+ session.
• This commonly occurs when IPMI over LAN is disabled in the BMC configuration of servers such as the Dell R750.

Environment

• Product: ZVF
• Version: 4.x
• Component: ZSphere
• Affected object: IPMI or BMC
• Scenario: For host and hardware issues, confirm the current version, deployment type, storage type, and operation timeline.

Possible causes

• IPMI over LAN is not enabled in the BMC, and RMCP port 623