IBM Support

Partition IP Address is "Unknown" for IBM i Partitions

Troubleshooting


Problem

Some or all IBM i partitions list a IP Address of "Unknown" under the partition General Properties. When dual HMCs manage the server, some partitions may show an ip address on one HMC but the other HMC will show "unknown" for the same partition. The partition general properties "IP Address" field represents the RMC ip address of the partition. IBM i has limited support for RMC and unlike VIOS and AIX, it does not use RMC for PowerVM functions. It is typical for IBM i to show an unknown address. This will not impact PowerVM or any HMC functions.

Symptom

Some or all IBM i partitions list a IP Address of "Unknown" under the partition General Properties.

When dual HMCs manage the server, some partitions may show an ip address on one HMC but the other HMC will show "unknown" for the same partition.

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Resolving The Problem

This is working as designed. The partition general properties "IP Address" field represents the RMC ip address of the partition. IBM i has limited support for RMC. For example it does not support dual HMCs (one HMC will always show unknown or inactive) nor connections w/o DNS names. This has no impact on PowerVM or other HMC functions. Unlike VIOS and AIX, IBM i does not use RMC for PowerVM functions, instead commands are passed via the HMC-FSP "private" connection.

For further information on IBM i RMC uses see http://www.ibm.com/support/docview.wss?uid=nas8N1012235

[{"Product":{"code":"SSB6AA","label":"Power System Hardware Management Console Physical Appliance"},"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Component":"HMC","Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"Version Independent","Edition":"","Line of Business":{"code":"LOB08","label":"Cognitive Systems"}}]

Document Information

Modified date:
22 September 2021

UID

nas8N1022371

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