The LAG interface is the resource that combines multiple physical interfaces into a single logical interface, which we call “LAG (Link Aggregation Group)” and one of its main purposes is to increase the bandwidth of the network traffic to the total width bandwidth of the aggregated physical interfaces, providing greater bandwidth as well as link redundancy, in case one of the links fails, automatically maintaining traffic to the other LAG interface(s).

The LACP (Link Aggregation Control Protocol), is a layer 2 negotiation protocol, which provides methods to control the aggregation of multiple physical ports in a single logical group. It allows a network device to negotiate an automatic grouping of links by sending LACP packets to another directly connected device that also implements LACP.

To add any LAG type interface, it is necessary that two or more interfaces are available. Otherwise during the creation process, they will not be displayed in the Aggregate interfaces panel.

Blockbit UTM offers this feature in 3 (three) operating modes:

To configure the link aggregation service, we need to create an aggregation group “LAG - Link Aggregation Group”, and define which links “interfaces” will be members of the group.

To configure a “LAG” interface, the interfaces must be “disabled” [].

Next, we'll take a closer look at the operating modes, starting with the Aggregation Mode.

For more information on adding other types of interfaces, visit this page.

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