Backbone

Backbone refers to the central, high-performance part of a network through which traffic from subordinate network segments is aggregated and forwarded. In corporate networks, the backbone connects floor distributors, buildings and sites, while on the internet it links the networks of major providers and exchange points. It is usually implemented using fibre optics with high transmission rates, together with powerful core switches and routers. Requirements include high bandwidth, low latency and strong resilience, which is why backbone links are designed with redundancy. Technologies such as link aggregation, spanning tree, MPLS and dynamic routing provide stable paths and balanced load distribution. As all major data flows pass through it, the quality of the backbone largely determines the performance of the entire network infrastructure.