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Interfaces Screen

  5 minute read.

Last Modified 2022-05-17 11:10 EDT

Use the Network > Interface Screen to add various network interfaces to your TrueNAS.

NetworkInterfacesScreen

Use the COLUMNS button to display options to modify the information displayed in the Interfaces table. Options are Type, Link State, DHCP, IPv6 Auto Configure, IP Addresses, Description, Active Media Type, Active Media Subtype, VLAN Tag, VLAN Parent Interface, Bridge Members, LAGG Ports, LAGG Protocol, MAC Address, MTU or Reset to Defaults.

Use ADD to display the Interface Add screen.

To see the details for any interface click the chevron_right symbol to the right of the interface.

Interface Detail Screen

Each interface has a detailed view with the current interface settings and additional actions available for the interface.

NetworkInterfaceDetailsScreen

Use EDIT to display the Network Interface Edit screen. Several settings are not editable and do not appear on the Edit screen.

Use RESET CONFIGURATION to reset the selected interface. Resetting the configuration interrupts network connectivity. The Reset Configuration dialog displays. You must select Confirm to activate the RESET CONFIGURATION button.

Interface Add Screen

The Interface Add screen displays additional configuration settings based on the type of interface selected.

NetworkInterfaceAddScreen

Interface Settings

SettingsDescription
TypeSelect the type of interface from the dropdown list. Select Bridge to create a logical link between mutliple networks. Select Link Aggregation to combine multiple network connections into a single interface. Select VLAN for a virtual LAN to partition and isolate a segment of the connection.
NameEnter a name for the interface. Use the format bridgeX laggX or vlanX where X is a number representing a non-parent interface.
DescriptionEnter a description for the interface. For example, what it is used for.
DHCPSelect to enable DHCP. Leave checkbox clear to crate a static IPv4 or IPv6 configuration. Only one interface can be configured for DCHP.
Autoconfigure IPv6Select to automatically configure the IPv6 address with rtsol(8). Only one interface can be configured this way.

Other Settings

SettingsDescription
Dsable Hardware OffloadingSelect to turn off hardware offloading for network traffice processing. Warning! Disabling hardware offloading can reduce network performance, and is only recommended when the interface is managing jails, plugins or virtual machines.
MTUA maximum transmission unit (MTU) is the largest protocol data unti that can be communicated. The largest workable MTU size varies with network interfaces and equipment. 1500 and 9000 are standard Ethernet MTU sizes. Leave blank restores this field to the default value of 1500.
OptionsEnter additional parameters from ifconfig(8).

Other Settings

SettingsDescription
IP AddressesSelect an IP address from the dropdown list to define an alias for the interface on this TrueNAS controller. The alias can be an IPv4 or IPv6 address.
ADDAdds a row to configure another IP address. A DELETE button displays to allow you to delete the extra IP address.

Bridge Settings

SettingsDescription
Bridge MemebersSelect network interfaces to include in the bridge from the dropdown list.

Ling Aggreation Settings

SettingsDescription
Lagg ProtocolSelect the lagg protocol from the dropdown list. This determines the outgoing and incoming traffic ports. LACP is the recommended protocol if the network switch is capable of active LACP. Failover is the default protocol choice and should be used if the network switch does not support active LACP. See lagg(4) for more details.
Lagg InterfacesSelect the interfaces on your TrueNAS to use in the aggregation from the dropdown list. Warning! Lagg creation fails if any of the selected interfaces have been manually configured.

VLAN Settings

SettingsDescription
Parent InterfaceSelect the VLAN parent interface on your TrueNAS from the dropdown list. Usually Ethernet card connected to a switch port configured for the VLAN. New link aggregations are not available until the system is restared.
Vlan TagEnter the numeric tag configured in the switched network. This is a required field.
Prioirty Code PointSelect the Class of Service from the dropdown list. The available 802.1p class of service ranges from **Best effort (default) to Network control (highest).

Interface Edit Screen

The Interface Edit screen displays only the editable configuration settings for the inface selected.

NetworkInterfacesEditScreen

Interface Settings

SettingsDescription
NameDisplays the name for the selected interface. This field cannot be edited.
DescriptionEnter a description for the interface. For example, what it is used for.
DHCPSelect to enable DHCP. Leave checkbox clear to crate a static IPv4 or IPv6 configuration. Only one interface can be configured for DCHP.
Autoconfigure IPv6Select to automatically configure the IPv6 address with rtsol(8). Only one interface can be configured this way.

Other Settings

SettingsDescription
Dsable Hardware OffloadingSelect to turn off hardware offloading for network traffice processing. Warning! Disabling hardware offloading can reduce network performance, and is only recommended when the interface is managing jails, plugins or virtual machines.
MTUA maximum transmission unit (MTU) is the largest protocol data unti that can be communicated. The largest workable MTU size varies with network interfaces and equipment. 1500 and 9000 are standard Ethernet MTU sizes. Leave blank restores this field to the default value of 1500.
OptionsEnter additional parameters from ifconfig(8).

Other Settings

SettingsDescription
IP AddressesSelect an IP address from the dropdown list to define an alias for the interface on this TrueNAS controller. The alias can be an IPv4 or IPv6 address.
ADDAdds a row to configure another IP address. A DELETE button displays to allow you to delete the extra IP address.

Use APPLY to save changes to settings and return to the Interfaces screen.

Additional Information

Setting Up a Network Bridge

Setting Up Link Aggregations

Setting Up a VLAN