If you need to update your HMC version and release, see Obtaining and applying machine code updates
for the HMC with an Internet connection (http://www.ibm.com/support/knowledgecenter/POWER9/
p9hai/p9hai_upgrades_enh.htm).
To cable the server to the HMC, complete the following steps:
Procedure
1. If you want to directly attach your HMC to the managed system, connect Ethernet Connector 1 on the
HMC to the HMC1 (T3) port on the managed system, as shown in Figure 25 on page 28
Figure 25. Directly attaching the HMC to the managed system
2. To learn how to connect an HMC to a private network so that it can manage more than one managed
system, see HMC network connections (http://www.ibm.com/support/knowledgecenter/POWER9/
p9hai/p9hai_netconhmc.htm).
Notes:
• You can also have multiple systems that are attached to a switch that is then connected to the HMC.
For instructions, see HMC network connections (http://www.ibm.com/support/knowledgecenter/
POWER9/p9hai/p9hai_netconhmc.htm).
• If you are using a switch, ensure that the speed in the switch is set to Autodetection. If the server is
directly attached to the HMC, ensure the Ethernet adapter speed on the HMC is set to
28
Power Systems: Installing the IBM Power System E950 (9040-MR9)
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