Layer 2 Switch Access Layer Aggregation Layer
Ethernet frame in LANs or multi-link PPP in WANs, Ethernet MAC address) aggregation typically occurs across switch ports, which can be either physical ports or virtual ones managed by an operating system. These aggregation switches typically operate at Layer 2 or Layer 3 of the OSI model, depending on the network topology and configuration requirements. They support link aggregation protocols such as Link Aggregation Control Protocol(LACP) and Static Link Aggregation, which allow multiple physical. 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. The same layer 2 (L2) switch may be used in the access layer or the convergence layer in different network structures; for the same reason, the same layer 3 (L3) switch, in different applications, It may be used as an aggregation layer switch or as a core layer switch.
Read More
