What role does the Active mode play in LACP?

In Link Aggregation Control Protocol (LACP), Active mode plays a crucial role in the negotiation process for forming EtherChannels. When a switch is configured to operate in Active mode, it actively sends LACP packets to its peers. These packets contain information about the switch's capabilities and its desire to form an aggregated link with available ports.

By continuously listening for LACP packets from partner switches, the Active mode not only initiates the negotiation process but also responds to incoming LACP packets. This ensures that both ends of the potential aggregated link are aware of each other's capabilities and are able to establish the link accordingly. Consequently, this mode is essential for maintaining redundancy and load balancing across multiple network links.

Understanding this role of Active mode is critical for effectively implementing link aggregation in a network, as it directly impacts the performance and reliability of connections between switches.