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    Configuring Gigabit and 10-Gigabit Ethernet Interfaces

    An Ethernet interface must be configured for optimal performance in a high-traffic network.

    To configure properties on a Gigabit Ethernet interface or a 10-Gigabit Ethernet interface on the QFX Series

    1. Select Interfaces > Ports.

      The page lists Gigabit Ethernet and 10-Gigabit Ethernet interfaces and their link status.

      Note: After you make changes to the configuration on this page, you must commit the changes immediately for them to take effect. To commit all changes to the active configuration, select Commit Options > Commit. See Using the Commit Options to Commit Configuration Changes for details about all commit options.

    2. Select the interface you want to configure.

      Details for the selected interface such as administrative status, link status, speed, duplex, and flow control are displayed in the bottom table on the page.

      Note: You can select multiple interfaces and modify their settings at the same time. When you do this, you cannot modify the IP address or enable or disable the administrative status of the selected interface.

      Note: You cannot configure interface ranges and interface groups in the J-Web interface.

    3. Click Edit and select the set of options you want to configure first:
      • VLAN Options—Enables you to configure VLAN options for the selected interface.
      • Link Options—Enables you to modify the following link options for the selected interface:
        • Speed
        • MTU
        • Autonegotiation
        • Flow control
        • Duplex
      • IP Options—Enables you to configure an IP address for the interface.
    4. Configure the interface by configuring options in the selected option set. See Table 1 for details on options.
    5. Repeat step 3 and step 4 for the remaining option sets that you want to configure for the interface.

      Note: To enable or disable the administrative status for a selected interface, click Enable Port or Disable Port.

    Table 1: Port Edit Options



    Your Action

    VLAN Options

    Port Mode

    Specifies the mode of operation for the interface: trunk or access.

    To specify theTrunk mode:

    1. Click Add to add a VLAN member.
    2. Select the VLAN and click OK.
    3. (Optional) Associate a native VLAN with the interface.
    4. Click OK.

    To specify the Access mode:

    1. Select the VLAN member to be associated with the interface.
    2. Click OK.

    Link Options

    MTU (bytes)

    Specifies the maximum transmission unit size for the interface.

    Type a value from 256 through 9216. The default MTU for Gigabit Ethernet interfaces is 1514.


    Specifies the speed for the mode.

    Select one of the following values: 10 Mbps, 100 Mbps, 1000 Mbps, or Auto-Negotiation.


    Specifies the link mode.

    Select one: automatic, half, or full.


    Describes the link.

    Note: If the interface is part of a link aggregation group (LAG), only the option Description is enabled.

    Enter a brief description for the link.

    Enable Auto Negotiation

    Enables or disables autonegotiation.

    Select the check box to enable autonegotiation, or clear the check box to disable it. By default, autonegotiation is enabled.

    Enable Flow Control

    Enables or disables flow control.

    Select the check box to enable flow control to regulate the amount of traffic sent out of the interface, or clear the check box to disable flow control and permit unrestricted traffic. Flow control is enabled by default.

    IP Options

    IPv4 Address

    Specifies an IPv4 address for the interface.

    Note: If the IP address is cleared, the interface still belongs to the inet family.

    1. To specify an IPv4 address, select the check box IPv4 address.
    2. Type an IP address—for example:
    3. Enter the subnet mask or address prefix. For example, 24 bits represents
    4. Click OK.

    Published: 2013-08-15