How Does a Switch Have an Advantage over a Bridge on a Network

Both the bridge and switch operate on the data link layer of the OSI model. But the switch is more advanced. Explain that the switch is superior to the bridge in the network before explaining in detail the technique for controlling the broadcast domain implemented in the switch. A network switch is a type of network device that connects devices over a network to implement packet switching. It operates on the data link layer of the OSI model. It is like a multiport bridge essentially handling and transferring data.

The switch connects devices on a single computer network and the switch can not join multiple networks. Switches are also referred to as L2 switches, switching hubs, bridging hubs, or media access control (MAC) bridges. The switch operates at layer 2 (data link layer) of the OSI model, and uses MAC address and packet exchange for data reception, processing and transfer. The switch saves the MAC address in the CAM table of the content accessible memory; it is much faster to store in the CAM table because the MAC address is fixed length. Switch can not perform NAT

Packet-switched computer networks use forwarding techniques called bridging. Bridging relies on flooding of received packet headers and checking of source addresses to determine the address location of unknown devices. The switch maintains an Ethernet MAC address table called a CAM table, also called a bridge forwarding table. In this table, a method called transparent bridging is used, including learning, flooding, filtering, forwarding, and aging. The switch logs the source address in the entry of the table and the destination address looks up the table and sends the frame against the correct segment. You can display this table on a Cisco switch using the show mac - address - table command. Source routing bridging is another form of bridging developed for token ring networks. The router forwards the packet based on the information stored in the IP routing table. You can use the show ip route command to display a table of Cisco routers. (Cisco, 2009)

A network switch is a computer network device that connects to a network segment and connects various parts of the network like a convergence device. A network switch is usually a bridge that processes and routes data at the data link layer (Layer 2) of the OSI model. Switches that process data at the network layer are also technically referred to as multilayer switches. A network interface card, network adapter, network interface controller (NIC), network interface card, or LAN adapter is a computer hardware component designed to allow computers to communicate over a computer network. It is both OSI layer 1 (physical layer) and layer 2 (data link layer) devices to provide physical access to network media and to provide low level addressing system using MAC address. It allows users to connect to each other by cable or wireless