What are campus area networks? – Network Glossary Definition
Campus area networks (CANs) comprise two or more connected local-area networks (LANs), typically serving a group of buildings in the same general vicinity – such as on a university campus, a military base or different buildings in a corporate campus.
Because it serves a limited geographical area, a CAN is typically smaller than a metropolitan-area network (MAN) or wide-area network (WAN). But a CAN may use many of the same underlying network technologies, including a series of interconnected high-speed routers and/or switches forming a high-speed network, such as Gigabit Ethernet.
A CAN is typically a private network, often based on optical fiber but potentially copper cable such as Cat5. It can be based on various network topologies, including a three-tier network or leaf-spine network topology.