Bridges: are limited to extend the network distance up to the network limitations. Bridges are useful to extend the network when dealing with one network. Also bridges limit entire company to use one network. At last when using bridges a failure in the network affects the entire network and thus the entire company.
Router is important device is used in networking; because it transmits the packet out to next router that repeats same process until packet reaches the destination. It is also intelligence device that can read IP addresses and direct network traffic (packets) to the correct location. This network device that used to connect as like bridge between different networks. Router is device that used in networking, when multiple devices need to connect to the Internet using the same IP. Because router is concern only about network address. Routers can be a wired or wireless and this is more expensive than the other network devices such as switch and hubs. Router break-up broadcast domains. The main function of a router is to connect networks together and keep the broadcast traffic under control.
Above is an illustrative diagram showing the use of an autonomous system. Inside each AS is the use of host machines and the use of multiple routers communicating inside a local network connection. Use of this means that each router, operating inside a local common administration will have local information about the use of routing tables and best possible path determinations for those routers restricted inside each area. Depending on the state of the topology each router will route information or advertise any updates it incurs differently. From the advertisements sent out from routers inside the network, it can determine live hosts and update routing tables, path determination accordingly from which it can sent packets throughout network.
The second part of this paper will explain the differences in networking topologies. Four networking technologies that will be discussed are Ethernet, Token Ring, FDDI (Fiber Distributed Data Interface) and wireless. Each one has different configurations that set it apart from the other technologies. Also, each of the technologies has advantages depending on the needs of a network. Along with advantages comes the disadvantages, some technologies offer limited advantages when compared with others. Understanding different networking technologies is vital for anyone planning to work in the IT field.
Generally, internetworking equipment or products transmit data across a network while functioning at open systems interconnection layers above the physical layer (“Connectivity and Internetworking Devices”, n.d.). These devices may direct data to particular locations within the network or change data into alternative formats. In some cases, the internetworking equipments are used to accomplish both purposes at the same time. The development of internetworking equipments was largely influenced by the need to increased sharing of information across different networks despite of the manufacturer of the network. This need emerged from the increased dependence on computers and ...
The Star topology is configured around a central switching or routing device, an intelligent hub, which receives and sends data to the appropriate recipient (see Figure 4). (MicroTech Corp, 1998, Star) The hub is an efficient, high-speed device that extends the capabilities of a simple cable. In the Star topology, each workstation is connected to one port on the hub. The Star topology is dominant in today's networks.
Teare, D. (1999, July). Internetworking Basics. Designing Cisco Networks. Indianapolis, IN: Cisco Press. Retrieved March 2, 2008, from, www.cisco.com/univercd/cc/td/doc/cisintwk/ito