Link aggregation, also known as port trunking or NIC bonding, is a network technology that merges multiple physical network interfaces into one logical link. This is achieved by distributing network traffic across these interfaces using various load-balancing algorithms.
The primary benefits are increased aggregate bandwidth and enhanced network resilience. If one physical link fails, traffic is automatically rerouted through the remaining active links, ensuring continuous connectivity. This is particularly vital for servers handling high traffic volumes or mission-critical applications.
Industry standards, notably IEEE 802.1AX and the Link Aggregation Control Protocol (LACP), govern the dynamic negotiation and management of these aggregated links, ensuring interoperability between diverse network hardware and software implementations.
