What mechanism ensures network stability if both ends of a cable connect to different switch ports?

Loop protection is the mechanism that maintains network stability when both ends of a cable are connected to different switch ports. In a networking context, switch loops can occur if multiple connections create paths that cause data frames to circulate indefinitely between switches. This can lead to broadcast storms, overwhelming network resources and causing significant performance degradation.

Loop protection protocols, such as Spanning Tree Protocol (STP), actively monitor the network topology and dynamically disable redundant paths that could lead to loops. By doing so, they ensure that only the most efficient path to transmit data is used, thus maintaining stability and integrity in the network. Network administrators can deploy these protocols to prevent issues related to switch loops and ensure a robust and reliable network environment.

Other mechanisms, such as network segmentation, packet filtering, and traffic shaping, serve different purposes. Network segmentation divides networks into segments to enhance performance and security. Packet filtering involves inspecting and controlling traffic based on defined security rules. Traffic shaping manages bandwidth allocation to ensure certain types of traffic receive appropriate priority but does not directly address the issues caused by loops.