What is Active mode in LACP?

Active mode in Link Aggregation Control Protocol (LACP) refers to a configuration state on a network device where it actively participates in the negotiation process to form an EtherChannel. When a port is configured in active mode, it sends LACP packets to other devices and listens for responses. This active participation allows the device to negotiate the aggregation of links into a single logical link, maximizing bandwidth and providing redundancy.

In contrast to passive mode, where a device only responds to LACP packets it receives, an active mode device takes the initiative to create and maintain the logical link. This proactive communication ensures that the link aggregation is established more efficiently, as it allows the exchange of information necessary to coordinate the parameters of the EtherChannel.

Understanding this concept is essential, as it highlights the importance of network device configurations in creating resilient and efficient connections within a network.