10.3.8. Establishing an IP-over-InfiniBand (IPoIB) Connection

You can use NetworkManager to create an InfiniBand connection.

Procedure 10.13. Adding a New InfiniBand Connection

You can configure an InfiniBand connection by opening the Network Connections window, clicking Add, and selecting InfiniBand from the list.
  1. Right-click on the NetworkManager applet icon in the Notification Area and click Edit Connections. The Network Connections window appears.
  2. Click the Add button to open the selection list. Select InfiniBand and then click Create. The Editing InfiniBand Connection 1 window appears.
  3. On the InfiniBand tab, select the transport mode from the drop-down list you want to use for the InfiniBand connection.
  4. Enter the InfiniBand MAC address.
  5. Review and confirm the settings and then click the Apply button.
  6. Edit the InfiniBand-specific settings by referring to the Configuring the InfiniBand Tab description below .

Figure 10.15. Editing the newly created InfiniBand connection 1

Procedure 10.14. Editing an Existing InfiniBand Connection

Follow these steps to edit an existing InfiniBand connection.
  1. Right-click on the NetworkManager applet icon in the Notification Area and click Edit Connections. The Network Connections window appears.
  2. Select the connection you want to edit and click the Edit button.
  3. Select the InfiniBand tab.
  4. Configure the connection name, auto-connect behavior, and availability settings.
    Three settings in the Editing dialog are common to all connection types:
    • Connection name — Enter a descriptive name for your network connection. This name will be used to list this connection in the InfiniBand section of the Network Connections window.
    • Connect automatically — Check this box if you want NetworkManager to auto-connect to this connection when it is available. See Section 10.2.3, “Connecting to a Network Automatically” for more information.
    • Available to all users — Check this box to create a connection available to all users on the system. Changing this setting may require root privileges. See Section 10.2.4, “User and System Connections” for details.
  5. Edit the InfiniBand-specific settings by referring to the Configuring the InfiniBand Tab description below .

Saving Your New (or Modified) Connection and Making Further Configurations

Once you have finished editing your InfiniBand connection, click the Apply button and NetworkManager will immediately save your customized configuration. Given a correct configuration, you can connect to your new or customized connection by selecting it from the NetworkManager Notification Area applet. See Section 10.2.1, “Connecting to a Network” for information on using your new or altered connection.
You can further configure an existing connection by selecting it in the Network Connections window and clicking Edit to return to the Editing dialog.
Then, to configure:

Configuring the InfiniBand Tab

If you have already added a new InfiniBand connection (see Procedure 10.13, “Adding a New InfiniBand Connection” for instructions), you can edit the InfiniBand tab to set the parent interface and the InfiniBand ID.
Transport mode
Datagram or Connected mode can be selected from the drop-down list. Select the same mode the rest of your IPoIB network is using.
Device MAC address
The MAC address of the InfiniBand capable device to be used for the InfiniBand network traffic.This hardware address field will be pre-filled if you have InfiniBand hardware installed.
MTU
Optionally sets a Maximum Transmission Unit (MTU) size to be used for packets to be sent over the InfiniBand connection.