Aggregation switch needs to be paired
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 augment reliability. An Aggregation or "Top-of-Rack" switch is designed to connect everything in a rack at high speeds, then have an even bigger pipe out to the rest of the network. By bundling multiple network connections into a single high-bandwidth link, aggregation switches help. It facilitates the connectivity because it would rapidly become impractical to interconnect all access switches in a full mesh of links without relying on an.
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