IBM Support

New Carbon GUI: Setting HMC Default Gateway Address and Gateway device

Troubleshooting


Problem

This document provides procedure to change HMC network settings for HMC Default Gateway Address and Gateway device.

Symptom

Having HMC default gateway interface being set to "any" can cause communication problems - especially with RMC, PEP, snmptraps, and vterms.

Environment

 7063-CR1, 7063-CR2 or ppc641e vHMC on PowerVM
 7042-*, or x86 vHMC

Resolving The Problem

Use the HMC GUI or chhmc command to set the default gateway interface to eth1 then reboot the HMC.

You can change the network setting from HMC command line:

To change other network settings:
 
chhmc -c network
 
-s modify
 
[-h host-name]
 
[-d network-domain-name]
 
[-g gateway [-i interface]]
 
[--help]
 
Or from HMC GUI
Select HMC Management =>  Network Settings => Routing

Gateway address (enter Gateway IP)

The gateway device should be eth1 (eth1 specifies the open network and is used for remote HMC access, call home, and dual HMC and/or HMC/partition communications)

image-20250215184826-1

Use the HMC GUI or chhmc command to set the default gateway interface to eth1 then reboot the HMC.

You can change the network setting from HMC command line:

To change other network settings:
 
chhmc -c network
 
-s modify
 
[-h host-name]
 
[-d network-domain-name]
 
[-g gateway [-i interface]]
 
[--help]
 
Or from HMC GUI
Select HMC Management => Console Settings => Change Network Settings.

Customize Network Settings => Routing

Default Gateway Information

Gateway address (enter Gateway IP)

The gateway device should be eth1 (eth1 specifies the open network and is used for remote HMC access, call home, and dual HMC and/or HMC/partition communications)

 

Use the HMC GUI or chhmc command to set the default gateway interface to eth1 then reboot the HMC.

You can change the network setting from HMC command line:

To change other network settings:
 
chhmc -c network
 
-s modify
 
[-h host-name]
 
[-d network-domain-name]
 
[-g gateway [-i interface]]
 
[--help]
 
Or from HMC GUI
Select HMC Management => Console Settings => Change Network Settings.

Customize Network Settings => Routing

Default Gateway Information

Gateway address (enter Gateway IP)

The gateway device should be eth1 (eth1 specifies the open network and is used for remote HMC access, call home, and dual HMC and/or HMC/partition communications)

routing tab

[{"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:
15 February 2025

UID

ibm17183422

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