What are the different router edges and how do they impact network performance and security?

There are three main types of router edges: core, distribution, and access. The core edge connects to the backbone network, the distribution edge connects different parts of the network, and the access edge connects end devices like computers and phones. Each edge plays a role in network performance and security by controlling traffic flow, managing bandwidth, and enforcing security policies. The core edge ensures fast data transfer, the distribution edge balances traffic, and the access edge controls user access and protects against threats.