Setting connection properties for Linux guest systems

Before you can set the network interfaces for server complexes, you must set up the connection properties for guest LANs, OSAs, or VSWITCHes in the z/VM. These will be used to route the Linux guest systems.

After you have set these connection properties, you can configure the network interfaces for a server complex.

Complete the following steps to set the connection properties:

  1. If it is not started already, start the Server Complexes task for the z/VM system you want to work with.
  2. Click Action z/VM Networking Properties to open the z/VM Networking Properties window.
  3. If this is the first time you are using the Server Complexes task for this z/VM, all the fields will be empty. Click Action Refresh from z/VM to see the existing connections (LANs, OSAs, and VSWITCHes).
  4. In the z/VM Networking Properties window, select the LAN, OSA, or VSWITCH tab.
  5. Select the connection whose properties you want to edit and click Edit Edit Properties to open the Connection Properties window.
    Screenshot of the Connection Properties window
    1. In the IP Address Range field, type the number of IP addresses that can be taken up by the network, starting from the Base IP address, when assigning an IP address to a Linux guest system configured on this connection.
    2. In the MTU field, type an integer for the maximum transmission unit. In cases of a guest LAN, this must not be larger than the Maximal frame size shown in the z/VM information on the upper part of the Connection Properties window.
    3. In the Base IP Address field, type the lowest IP address that can be used when assigning an IP address to a Linux guest system configured on this guest network.
    4. In the Netmask field, type the subnet mask that will be used for the Linux routing.
    5. (Optional) In the Default gateway field, type the default gateway for the connection. This step is optional because you can also type the default gateway in the Server Complex Properties window.
    6. Click OK to update the connection properties and close the Connection Properties window.
  6. In the z/VM Networking Properties window, click Action Save .
Note: You can also double-click a line in the z/VM Networking Properties table to open the Connection Properties window for that connection.

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