How is connectivity defined in terms of TCP connections?

Connectivity in the context of TCP connections is primarily defined by the successful establishment of those connections. When looking at the health and performance of a network, the percentage of established TCP connections compared to those that are refused or have timed out serves as a direct indicator of connectivity. This measure reflects how well a system is able to initiate and maintain active communication channels.

High connectivity implies that a large proportion of attempts to establish TCP connections result in successful connections, indicating good health and performance of the network. In contrast, a higher rate of refused or timed out connections can point to potential issues such as network congestion, server overload, or misconfigurations that could affect overall performance and user experience.

By focusing on the proportion of successful versus unsuccessful attempts, network administrators can gain valuable insights into the current state and reliability of their systems, allowing for proactive measures to enhance connectivity.