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Connecting a Power 10 eBMC system to an HMC

How To


How to connect and manage a Power10 eBMC type system from an HMC.


This document helps to get the Power 10 eBMC system managed by the HMC.


HMC 7063 model type - V10R1M1020 or higher
vHMC on x86 - V10R1M1020 or higher
vHMC on Power - V10R1M1020 or higher
Power 10 eBMC type system


eBMC Power servers introduce a new connection type between HMC and managed server.  Each eBMC server requires two connections; one to the eBMC itself and one to the Virtual Management Interface (VMI).  This requires two IP addresses per eBMC Ethernet port.   As with FSP-based systems there are two eBMC Ethernet ports to allow for redundant HMCs.  Each HMC is cabled (private DHCP networks) or connected via static IP address to one eBMC port.   Redundant HMCs require a total of 4 IP addresses for each server. The default setting for the eBMC IP address is dhcp client, however the default setting for the VMI IP address is currently set to static. The VMI IP settings should be configured before powering on or the server will go into a no connection state when it reaches standby. The eBMC IP address is active when the server has completed AC power apply initialization (power off state). The VMI IP address is not active until the server is powered on (standby or operating). 
** There are no default IP addresses anymore, to access ASM using a browser. You should use panel function 30 to what the IP address may be set to. Panel Function 30
Example of 9105-22A, 9105-22B, or 9786-22H rack rear view where eBMC ports are in yellow, (T0=Port0, T1=Port1)
1. HMC must be at V10R1M1020 (V10R1) or higher or V10R2M1030 (V10R2) or higher
1. First configure the HMC network settings. (You can use DHCP or Static) In this example below, we are using DHCP.
Note which release your running, V10R1 or V10R2 and follow the correct paths.
(V10R1)From the HMC GUI - Select Console Management> Console Settings> Change Network Settings
(V10R2) From the HMC GUI - left hand side, select HMC Management - see next slide
Then select LAN adapters, highlight an adapter to use (eth1 for example), and click Details.
Select Private, Media Speed *Autodetection, check the box for Enable DHCP server, then pick a range to use. Then click OK
Click OK again to Update Network Settings.
2. Cable the port selected on the HMC to an eBMC port on the Power 10. 
**Note - If using Static IP address, you must access the eBMC port on the Power10 using a laptop, to set the static IP address to be used. See - Connecting a laptop to eBMC interface
Once that is done, then use the screens above to set an Open connection, using Specify an IP address, (static) an put in your IP address of the HMC, that will connect to the one set in eBMC.
Note the eBMC port used on the Power 10 system (first (T0) HMC port = eth0, second (T1)HMC port = eth1)


  1. Connect each end of the power cables to the power supplies on the rear of the system, and connect the other ends to a power source.
  2. When the server reaches "power off" state, the HMC automatically discovers the system and assigns it a default name. The name is the DHCP IP address acquired during initialization, without the decimals. The HMC displays the Pending Authentication state.
  3. Set the ID and password that your HMC will use to authenticate and manage the system. This is the same ID and password that you will use to access the ASMI. To set the system password, select the BMC, then select Actions > Update System Password.

    Password must:
1. Be at least 8 characters
2. Not be a palindrome
3. Not contain the account username
4. Not contain a dictionary word
5. Not contain sequential characters
6. Must be 20 characters or less if used for IPMI
  • Note: The default user ID is admin and the default password is admin (the password is set to expired).
  • Click Finish.
  • To Configure VMI -
  • (V10R1) - Select System, then click Actions > VMI configuration.
    •  For (V10R2), select the System, then use the drop down for Connections and Operations, select VMI Connection
  • image-20230111150952-1
  • Select the same eBMC network interface the HMC is cabled to. 
Note that the adapters may list eth1 first, however eth0 is typically used for the first HMC.
  • Click Actions > Modify
  • Select DHCP and click Modify.
  • Click the refresh button.  Ensure the VMI interface acquires a new DHCP IP address.
  • If using static IP address, you will need a second IP address to use for the VMI configuration.
  • Use the HMC to power on the system.
  • V10R1
    • In the navigation area, select Resources > All Systems.
    • In the content panel select the managed system.
    • In the navigation area, select System Actions > Operations > Power On.
  • V10R2
         In the navigation area, select Systems
    .     In the content panel select the managed system.
        On the menus bar select Connections and operations > Power On
The table view will show an icon that looks like this for the Power 10
Wait for the server to reach standby state.     After the server reaches standby the server name should update to match actual the type, model and serial number.
Common issues
1. Server goes to "No Connection" after power-on
This typically indicates the VMI IP address was not configured or not configured correctly.
Check the VMI IP address.  Ensure the configured interface matches the BMC interface the HMC is connected to.  Ensure that it replies to ping if the server is standby or operating.
2. Server type, make and serial number do not update, vterm sessions fail to open.
Ensure you know the BMC admin password (Login to ASM). 
Remove the connection:
rmsysconn -m <server name as shown in lssysconn -r all> -o r
Add the connection back.
If the connection is DHCP private network:
mksysconn -o auto
Wait a few minutes, re-enter the password when prompted.
If the connection is static:
mksysconn --ip <bmc ip> -u admin --passwd <admin password>
Wait several minutes for the VMI IP address to be discovered.
3. System toggles from “Pending Authentication” to “No connection” and showing Password expired 0806-0000-00000000.  This is because the default user ID is admin and the default password is admin (the password is set to expired).
Set the ID and password that your HMC will use to authenticate and manage the system. This is the same ID and password that you will use to access the ASMI. To set the system password, select the BMC, then select Actions > Update System Password.
Helpful commands
The lssysconn command will list both the eBMC and VMI IP addresses and connection states.  Each server must have a valid IP address for both.  The VMI address must show connected when the server is standby or operating.
lssysconn -r all
To check the vmi configuration:
lssysconn -r vmi -m <server name>
To check for configuration errors:
lssyscfg -r sys -F name,state,state_detail

Document Location


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Document Information

Modified date:
06 November 2023