What is the core switch called

A core switch is also called a backbone switch or primary switch.

A core switch serves as the high-capacity, high-performance switch at the backbone of a network, centralizing data flow from distribution or aggregation switches and ensuring rapid, reliable routing across the network . Because of its central role, it is sometimes referred to as a backbone switch, highlighting its function as the main conduit for network traffic, or a primary switch, emphasizing its position at the top of the hierarchical network model . In some network designs, particularly in smaller or medium-sized networks, a collapsed core architecture may use a high-performance aggregation switch to perform the functions of both the core and distribution layers, effectively acting as a core switch . Key characteristics of a core/backbone switch include:

• High-speed Layer 3 routing and switching capabilities
• Large buffer capacity to handle burst traffic
• Redundancy features such as dual power supplies and hot-swappable modules
• Aggregation of multiple lower-layer switches for efficient data flow Thus, when discussing network architecture, the terms core switch, backbone switch, and primary switch are often used interchangeably to describe the central switch that forms the network's backbone .