Configuring Network-Related Settings

This chapter includes the following sections:

CIMC NIC Configuration

CIMC NICs

Two NIC modes are available for connection to the CIMC.

NIC Mode

The NIC Mode drop-down list in the NIC Properties area determines which ports can reach the CIMC. The following mode options are available, depending on your platform:

  • Dedicated—A connection to the CIMC is available through the management Ethernet port or ports.
  • Shared LOM—A connection to the CIMC is available through the LAN On Motherboard (LOM) Ethernet host ports and through the router's PCIe and MGF interfaces.

    Note
    In shared LOM mode, all host ports must belong to the same subnet.

NIC Redundancy

The NIC Redundancy drop-down list in the NIC Properties area determines how NIC redundancy is handled:

  • None—Redundancy is not available.
  • Active-Standby—One port fails over to the other.

The available redundancy modes vary depending on the selected network mode and your platform.

Configuring CIMC NICs

Use this procedure to set the NIC mode and NIC redundancy.

Before You Begin

You must log in as a user with admin privileges to configure the NIC.

Procedure
    Step 1   In the Navigation pane, click the Admin tab.
    Step 2   On the Admin tab, click Network.
    Step 3   In the Network pane, click the Network Settings tab.
    Figure 1. Network Settings Tab



    Step 4   In the NIC Properties area, update the following properties:
    Name Description

    NIC Mode drop-down list

    The NIC mode. This can be one of the following:

    • Dedicated—The management port is used to access the CIMC.
    • Shared LOM—The LOM (LAN On Motherboard) ports are used to access the CIMC.

    NIC Redundancy drop-down list

    The NIC redundancy options depend on the mode chosen in the NIC Mode drop-down list and the model of the server that you are using. If you do not see a particular option, then it is not available for the selected mode or server model.

    The available options are:

    • none—Each port associated with the configured NIC mode operates independently. The ports do not fail over if there is a problem.
    • active-standby—If a port associated with the configured NIC mode fails, traffic will fail over to one of the other ports associated with the NIC mode.
      Note   

      If you select this option, make sure all ports associated with the configured NIC mode are connected to the same subnet to ensure that traffic is secure regardless of which port is used.

    NIC Interface field

    The interface used by the NIC.

    MAC Address field

    The MAC address of the CIMC network interface selected in the NIC Mode field.
    Note   

    The available NIC mode options may vary depending on your platform.

    If you select Shared LOM, make sure that all host ports belong to the same subnet.
    Step 5   Click Save Changes.

    Configuring Common Properties

    Use common properties to describe your server.

    Before You Begin

    You must log in as a user with admin privileges to configure common properties.

    Procedure
      Step 1   In the Navigation pane, click the Admin tab.
      Step 2   On the Admin tab, click Network.
      Step 3   In the Network pane, click the Network Settings tab.
      Figure 2. Network Settings Tab



      Step 4   In the Hostname field, enter the name of the host.
      Step 5   Click Save Changes.

      Configuring IPv4

      Before You Begin

      You must log in as a user with admin privileges to configure IPv4.

      Procedure
        Step 1   In the Navigation pane, click the Admin tab.
        Step 2   On the Admin tab, click Network.
        Step 3   In the Network pane, click the Network Settings tab.
        Figure 3. Network Settings Tab



        Step 4   In the IPv4 Properties area, update the following properties:
        Name Description

        Enable IPv4 check box

        If checked, IPv4 is enabled.

        Use DHCP check box

        If checked, the CIMC uses DHCP.

        IP Address field

        The IP address for the CIMC.

        Subnet Mask field

        The subnet mask for the IP address.

        Gateway field

        The gateway for the IP address.

        Obtain DNS Server Addresses from DHCP check box

        If checked, the CIMC retrieves the DNS server addresses from DHCP.

        Preferred DNS Server field

        The IP address of the primary DNS server.

        Alternate DNS Server field

        The IP address of the secondary DNS server.
        Step 5   Click Save Changes.

        Connecting to a VLAN

        Before You Begin

        You must be logged in as admin to connect to a VLAN.

        Procedure
          Step 1   In the Navigation pane, click the Admin tab.
          Step 2   On the Admin tab, click Network.
          Step 3   In the Network pane, click the Network Settings tab.
          Figure 4. Network Settings Tab



          Step 4   In the VLAN Properties area, update the following properties:
          Name Description

          Enable VLAN check box

          If checked, the CIMC is connected to a virtual LAN.

          VLAN ID field

          The VLAN ID.

          Priority field

          The priority of this system on the VLAN.
          Step 5   Click Save Changes.

          Network Security Configuration

          Network Security

          The CIMC uses IP blocking as network security. IP blocking prevents the connection between a server or website and certain IP addresses or ranges of addresses. IP blocking effectively bans undesired connections from those computers to a website, mail server, or other Internet servers.

          IP banning is commonly used to protect against denial of service (DoS) attacks. CIMC bans IP addresses by setting up an IP blocking fail count.

          Configuring Network Security

          Configure network security if you want to set up an IP blocking fail count.

          Before You Begin

          You must log in as a user with admin privileges to configure network security.

          Procedure
            Step 1   In the Navigation pane, click the Admin tab.
            Step 2   On the Admin tab, click Network.
            Step 3   In the Network pane, click the Network Security tab.
            Figure 5. Network Security Tab



            Step 4   In the IP Blocking Properties area, update the following properties:
            Name Description

            Enable IP Blocking check box

            Check this box to enable IP blocking.

            IP Blocking Fail Count field

            The number of times a user can attempt to log in unsuccessfully before the system locks that user out for a specified length of time.

            The number of unsuccessful login attempts must occur within the time frame specified in the IP Blocking Fail Window field.

            Enter an integer between 3 and 10.

            IP Blocking Fail Window field

            The length of time, in seconds, in which the unsuccessful login attempts must occur in order for the user to be locked out.

            Enter an integer between 60 and 120.

            IP Blocking Penalty Time field

            The number of seconds the user remains locked out if they exceed the maximum number of login attempts within the specified time window.

            Enter an integer between 300 and 900.
            Step 5   Click Save Changes.