An aggregation layer usually comprises a few blocks of two switches in MCLAG. The primary function of an aggregation switch is to aggregate and forward data from multiple network devices, such as access. Switch aggregation refers to the concept of consolidating multiple access layer switches into a single aggregation layer switch in a traditional three-tier network design. It is essential for larger networks requiring efficient data flow. By design, it therefore provides resiliency because it will always be deployed in pairs of switches and comes with a recommendation to deploy only dual hot swappable power supplies and redundant fans in each switch to. 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. In a traditional three-tier network design, it's the policy hub: the place where traffic gets organized, filtered, and routed between different.
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