What does PAgP stand for?

PAgP stands for Port Aggregation Protocol, which is a Cisco proprietary protocol used to automate the process of establishing EtherChannel links between network switches. EtherChannel allows the bundling of multiple physical links into a single logical link, which enhances bandwidth and provides redundancy.

Port Aggregation Protocol helps to manage link aggregation by dynamically negotiating the forming of EtherChannel links, ensuring that ports bundled together are configured similarly. This capability reduces manual configuration and errors, facilitating a seamless network infrastructure where optimized bandwidth and reliability are critical.

In the context of link aggregation, understanding the correct terminology is vital, and "Port Aggregation Protocol" accurately describes the function of this protocol in managing the port aggregation process effectively.