Networking Components Jason McKee CECS 5460.020/026 Assignment #3
Hub - $25 to $50 • A network hub is a device used for connecting multiple Ethernet devices together on a single network segment. Hubs are typically used in small office workgroups and home networks where more sophisticated connecting devices are not required.
Switch - $50 to 1000’s of dollars. • Similar to a hub in functionality and appearance the switch is a more sophisticated networking device. Unlike a hub that delivers all packets to all attached devices a switch only sends data to the device it is destined for. Switches are used in large networks to breakup network segments and improve network performance.
Router - $100 and up • A router is a device used to forward packets between computer networks. The router reads the header information from each packet and then using its local routing table decides which interface to send it out of. Routers are used to connect home and business networks together, to other networks, or to the Internet.
Bridge - $50 to $150 • A bridge is device used to connect two separate networks or to divide a single network in two. Bridges are almost exclusively seen in small shops where network separation is required but a router would be overkill.
Gateway - $100 to $200 • A gateway is network node used for interfacing between networks with different protocols. Gateways are often provided my ISP’s to home users for connecting back to the Internet.
Firewall – $300 and up • A firewall is hardware device or software running on a multi-homed computer that controls incoming and outgoing network traffic by comparing packets to user programed rule set. Firewalls can be found installed in individual computers as well as at the edge of large computer networks.
Wireless AP - $100 to $500 • Wireless AP or access points are used to provide wireless network access throughout buildings, public areas, etc. Each wireless AP is connected back to a controller via standard Ethernet cable (which acts a switch) and the controller is connected back to a core router. AP systems are often found in large business and public areas that provide Wi-Fi access.