A hub and a router are both electronic devices used in computer systems networking. A router is a more sophisticated device with both hardware and software that is used to connect multiple area networks (LANs and WANs), or two or more logical subnets.
See also Hub vs. Switch.
|Layer||Physical layer. Hubs are classified as Layer 1 devices per the OSI model.||Network Layer (Layer 3 devices)|
|Function||To connect a network of personal computers together, they can be joined through a central hub.||Directs data in a network. Passes data between home computers, and between computers and the modem.|
|Data Transmission form||Electrical signal or bits||Packet|
|Transmission Type||Hubs always perform frame flooding; may be unicast, multicast or broadcast||At Initial Level Broadcast then Uni-cast & Multicast|
|Device Type||Passive Device (Without Software)||Networking device|
|Used in (LAN, MAN, WAN)||LAN||LAN, WAN|
|Table||A network hub cannot learn or store MAC address.||Store IP address in Routing table and maintain address at its own.|
|Transmission Mode||Half duplex||Full duplex|
|Broadcast Domain||Hub has one Broadcast Domain.||In Router, every port has its own Broadcast domain.|
|Definition||An electronic device that connects many network device together so that devices can exchange data||A router is a networking device that connects a local network to other local networks. At the Distribution Layer of the network, routers direct traffic and perform other functions critical to efficient network operation.|
|Speed||10Mbps||1-10 Mbps (Wireless); 100 Mbps (Wired)|
|Address used for data tramsmission||Uses MAC address||Uses IP address|
|Necessary for Internet Connection?||No.||No, but provides additional security and allow for multiple connections.|