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Modify speed and duplex settings for hardware appliances

  • Published on Sep 1, 2026
  • 1 minute(s) read
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By default, the network interfaces are configured for auto-negotiation. Use the command line to change the speed and duplex settings.

  1. Using a command-line session, log on to the appliance.

  2. From the options menu, select the Shell option.

  3. View the help on forming the command.

    $ /opt/NETAwss/mgmt/nic_options -?

    • Use lan1 for the client interface and mgmt for the management interface.

    • --(no)autoneg turns auto-negotiation on or off. The default is on.

    • --duplex specifies the duplex — half or full. The default is full.

    • --speed specifies the network speed in Mb/s 10000 (Trellix DLP 8800, Trellix DLP 7700, and Trellix DLP 6600 only), 1000, 100, or 10.

      The default is 10000 Mb/s for Trellix DLP 8800, Trellix DLP 7700, and Trellix DLP 6600 appliance models.

    • --mtu specifies the Maximum Transmission Unit (MTU) size in bytes — a value between 576–1500. The default is 1500.

  4. Enter the command to change the setting. Examples:

    • To disable auto-negotiation and set a network speed of 100 Mb/s on the client interface:

      $ sudo /opt/NETAwss/mgmt/nic_options --noautoneg --speed 100 lan1

    • To restore the default behavior to the management port:

      $ sudo /opt/NETAwss/mgmt/nic_options mgmt

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