An aggregation switch operates at Layer 2 or Layer 3 of the OSI model, depending on the configuration and topology of the network. The controller uses protocols, such as Link Aggregation Control Protocol (LACP) or Static Link Aggregation, to combine physical links into a single. An aggregation switch is a network device that consolidates traffic from multiple access switches, wireless access points, or other edge devices and forwards it to core switches or routers. A Layer 2 access topology provides the following unique capabilities required in the data center: VLAN extension—The Layer 2 access topology provides the flexibility to extend VLANs between switches that are connected. An 8-port, Layer 2 switch made for 10G SFP+ connections. Faster replacement and priority support, covered for 5 years. High-performance 10G SFP modules for optimal connectivity. The aggregation (sometimes also called distribution) layer is a real crossroad. The two-tier design is well suited for small buildings with few wiring closets and access switches.
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