Use the Network > Interface Screen to add various network interfaces to your TrueNAS.
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.
The Interfaces widget on the Network screen displays interface port names and IP addresses configured on your TrueNAS system, as well as their upload/download rates.
Use Add to open the Add Interface configuration screen.
Click on an interface to open the Edit Interface configuration screen.
Click the edit icon next to an interface to open the Edit Interface configuration screen.
Click the refresh icon next to a physical interface to reset configuration settings for that interface.
It is recommended to set up your system connections before setting up data sharing. This allows integrating TrueNAS into your specific security and network environment before attempting to store or share critical data.
Network Summary The Network Summary gives a concise overview of the current network setup. Information about the currently active Interfaces, Default Routes, and Nameservers is provided. These areas are not editable.
Interfaces shows any configured physical bridge, LAGG, and vlan interfaces.
A bridge generally refers to various methods of combining (aggregating) many network connections. These form a single total network. TrueNAS uses bridge(4) to manage bridges.
To set up a bridge interface, go to Network > Interface > Add.
Select Bridge as the Type and enter a name for the interface. The name must use the format bridgeX*, where X is a number representing a non-parent interface. It is also recommended to add any notes or reminders.
The Network screen allows you to add new or edit existing network interfaces, and configure static and alias IP addresses.
Why should I use different interface types? Use LAGG (Link Aggregation) to optimize multi-user performance, balance network traffic, or have network failover protection.
For example, failover LAGG prevents a network outage by dynamically reassigning traffic to another interface when one physical link (a cable or NIC) fails.
Use a network bridge to enable communication between two networks and provide a way for them to work as a single network.
In general, a bridge refers to various methods of combining (aggregating) multiple network connections into a single aggregate network.
TrueNAS uses bridge(4) as the kernel bridge driver. Bridge(8) is a command for configuring the bridge in Linux. While the examples focus on the deprecated brctl(8) from the bridge-utilities package, we use ip(8) and bridge(8) from iproute2 instead. Refer to the FAQ section that covers bridging topics more generally.
Network bridging does not inherently aggregate bandwidth like link aggregation (LAGG).
A Link Aggregation (LAGG) is a general method of combining (aggregating) many network connections. The connections are either parallel or in series. This provides extra bandwidth or redundancy for critical networking situations. TrueNAS uses lagg(4) to manage LAGGs.
To set up a LAGG interface, go to Network > Interface > Add.
Set the Type to Link Aggregation.
Enter a name for the interface. The name must use the format laggX, where X is a number representing a non-parent interface.
In general, a link aggregation (LAGG) is a method of combining (aggregating) multiple network connections in parallel to provide additional bandwidth or redundancy for critical networking situations. TrueNAS uses lagg(4) to manage LAGGs.
Prepare your system for interface changes by stopping and/or removing apps, VM NIC devices, and services that can cause conflicts:
Stop running apps before proceeding with network interface changes. Power off any running virtual machines (VMs) before making interface IP changes.
Editing an Interface Be careful when configuring the network interface that controls the TrueNAS® web interface. An error can result in the loss of web connectivity. Network > Interfaces lists all physical Network Interface Controllers (NICs) connected to your TrueNAS® system.
To edit an interface, click > next to it to expand the view. This provides a general description about the chosen interface. Click EDIT.
TrueNAS Enterprise customers: you cannot edit an interface with High Availability (HA) enabled.
A virtual LAN (VLAN) is a specialized domain in a computer network. It is a domain partitioned and isolated at the data link layer (OSI layer 2). See here for more information on VLANs. TrueNAS uses vlan(4) to manage VLANS.
To set up a VLAN interface, go to Network > Interface > Add.
Set the Type to VLAN and enter a name for the interface in Name. The name must use the format vlanX, where X is a number representing a non-parent interface.
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