Differences Between Core Network Switch and AGG Switch

Whether it is the deployment of a small network enterprise or the deployment of a large data center network, switches are an indispensable and important component. They connect the functional units of various lines based on individual user needs. We usually meet Ethernet switches, fiber switches, and the like. So what are core network switches and AGG switches? What is the difference between the two? This article will give you a detailed introduction.

The Concept Difference Between Core Network Switches and Aggregation Switches

The biggest difference between core network switches, aggregation switches, and ordinary switches is that they are not a specific type of switch, but are distinguished based on their functions. Conceptually, network switches which deployed at the core layer are called core network switches. Similarly, switches deployed at the aggregation layer are called AGG switches. To understand these two types of switches, one must first understand what the core layer and aggregation layer are.

Core Layer

The core layer is the central backbone of the entire network layout, bearing and aggregating all transmission traffic. It plays a management role and is the main guarantee of network performance. Apart from core network switches, the core layer also includes routers, firewalls, and other equipment. Its main function is to provide high-speed transmission and optimization for aggregation layer equipment. It is an indispensable part of network deployment.

Aggregation Layer

The aggregation layer mainly serves to lighten the load on core layer equipment, acting as a middleman in communication. It features multiple functions such as implementing policies, security, workgroup access, routing between VLANs, source or destination address filtering, and more. The aggregation layer is often overlooked in actual applications, especially in short-distance transmissions, as the core layer's sufficient access can directly connect to the access layer. The common two-layer network architecture is this type of connection mode, which can save network layout and subsequent maintenance costs to a certain extent.

Applications of Aggregation Switches

Data Center Network

In large data centers, aggregation switches connect multiple servers and storage devices, providing high-bandwidth, low-latency connections to meet the needs of large data centers.

Campus Network

In campus networks, aggregation switches connect access layers in multiple buildings, laboratories, and student dormitories, providing high-speed links and traffic management.

Branch Network

In cross-regional branch networks, aggregation switches are used to connect the access layers of each branch and aggregate data streams to the core layer, enabling cross-regional communication and data exchange.

Applications of Core Network Switches

Internet Access Point

In ISP networks, the core layer connects multiple aggregation layers and routes data traffic to the target internet access points.

Large Enterprise Network

In large enterprise networks, core network switches are used to connect multiple aggregation layers and data centers. They support telecommunications and data exchanges between different departments within the enterprise and connection to external networks.

Cloud Service Provider Network

In the network structure of cloud service providers, core network switches are key components connecting multiple data centers and cloud regions.

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