Chapter 2. What is a Cisco network?

Every organization’s most valuable traffic passes through two types of networking devices: routers and switches. Cisco makes some of the most popular, dependable routers and switches around, so most organizations standardize on Cisco for these devices. For other networking devices like firewalls and wireless access points, they may go with Cisco or they may choose a different brand altogether. But as long as the network uses Cisco routers and switches, you can consider it a Cisco network.

There’s no requirement that you must use Cisco-branded routers and switches. You can use a Cisco switch with a Juniper router, and they’ll work together just fine. You can use a Cisco router with a Juniper switch, and that ...

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