Gathering the required network information

Before you expand a cluster, you must obtain networking information required to later configure the node-management LIFs and the Service Processor IP addresses for both of the nodes.

Steps

  1. Obtain the following details to configure two node-management LIFs—one for each of the nodes that you plan to add to the cluster:
    • IP address
    • Network mask
    • Gateway
    • Port
  2. If your site typically has DNS entries for node-management LIFs, ensure that DNS entries are created for the new nodes.
  3. Determine whether the cluster uses automatic or manual network configuration for the SP by using the system service-processor network auto-configuration show command.
    If a subnet name is displayed in either the SP IPv4 Subnet Name or SP IPv6 Subnet Name column, the cluster is using automatic SP networking. If both columns are blank, the cluster is using manual SP networking.
    Example
    In the following output, the sub1 subnet indicates that cluster1 SP uses automatic network configuration:
    cluster1::> system service-processor network auto-configuration show
    Cluster Name         SP IPv4 Subnet Name          SP IPv6 Subnet Name
    -------------------- ---------------------------- -------------------
    cluster1             sub1                            -                         
    Example
    In the following output, the blank subnet fields indicate that cluster1 SP uses manual network configuration:
    cluster1::> system service-processor network auto-configuration show
    Cluster Name         SP IPv4 Subnet Name          SP IPv6 Subnet Name
    -------------------- ---------------------------- -------------------
    cluster1             -                            -                         
  4. Depending on the SP network configuration, perform one of the following actions:
    • If the SP uses manual network configuration, obtain two IP addresses that you will use later when configuring SP on the new nodes.
    • If the SP uses automatic network configuration, verify that the subnet used by the SP has available IP addresses for the two new nodes by using the network subnet show command.
    Example
    In the following output, the sub1 subnet has 2 addresses available:
    cluster1::>  network subnet show
    IPspace: Default
    Subnet                     Broadcast                   Avail/
    Name      Subnet           Domain    Gateway           Total   Ranges
    --------- ---------------- --------- --------------- --------- ---------------
    sub1      10.53.33.1/18    Default   10.53.0.1          2/4    10.53.33.3-10.53.33.6
    ...