It is used to segment a network and hold back frames that are intended for the local area network while transmitting those that are needed to be sent to the other networks. This improves level of privacy since the information intended for one network cannot be listened on the other connected network. It also reduces traffic and collisions on all networks. A bridge connecting two networks The difference between a switch and a bridge is that each port on a switch is its own collision domain. A collision domain is formed between any two connected devices via a sw... ... middle of paper ... ...so a trusted method of securing data and used as an internet standard.
Of course, this setting is much slower, because the other NICS are waiting for there turn, which is after the first message is delivered or timed out. Raymond R. Panko writes this about the waiting state a hub goes in when transmitting data: “This creates latency (delay), which grows as the number of stations grows. Another way of saying this is that the speed of the hub is shared. (Panko 108)” As, you can tell, hubs are simple, and don’t use more information than needed. Switches, which are layer 2 devices, use decision based routing by storing NIC hardware addresses and port numbers on a table in the switch.
25 Feb 2010. http://www.networkworld.com/news/2009/122309-how-mpls-works.html 5) "MPLS Overview." metaswitch.com. Metaswitch Networks, Web. 25 Feb 2010. http://www.metaswitch.com/mpls/what-is-mpls.aspx 6) E. , Rosen, and Viswanathan A. "Multiprotocol Label Switching Architecture."
But a new technology called Multiprotocol Label Switching (MPLS) is changing all that. With MPLS, you can support all the above applications on an IP network without having to run large subsets of the network with completely different transport mechanisms, routing protocols, and addressing plans. Although the standard is a work in progress, many vendors and service providers are announcing MPLS products and services. As such, now seems like a good time to learn how the technology works, how it can be deployed, and what issues still need to be addressed. MPLS operates at an OSI Model layer that is generally considered to lie between traditional definitions of Layer 2 (data link layer) and Layer 3 (network layer), and thus is often referred to as a "Layer 2.5" protocol.
A Star topology allows for greater reliability because each node is connected to the central devise by a segment. If one segment breaks, only that node loses access to the network so the rest of the network is not affected. Because each node is connected to the central device, star topologies also allow for an easy network layout, providing the network administrator easier installation over the other topologies. The disadvantage of this topology is cost. With each devise being connected to the central location, more cabling is required than with other topologies.
This is a protocol used in moving the web pages successfully across the internet. In order to guarantee and orderly and correct delivery of data, it depends on TCP in the network. SNMP – This is a protocol which helps in managing and monitoring systems in a network. It defines a method to send queries and commands from a client to a server and also collecting responses together with unsolicited notifications of an event. It uses UDP to send traffic due to its simplicity plus low overhead.
In a Mesh network if a segment of the network is broken, then the packet being sent will find an alternate route to its destination. Mesh are used in Wide Area Networks (WANs) where reliability is important, this is used were the network is small. A bus network has a single cable that is the backbone of the system. Ethernet bus networks are relatively easy to install and do not require much cabling. Bus networks work best with a limited number of devices because if a cable fails the entire network effectively becomes unusable.
Network cables are another component that is used in communication between network devices. Cables are used to connect one network device to other via several different connections. The most reliable type of connection between two or more devices is to use a wired connection. These connections can be used to share data and access between servers, PCs, printer... ... middle of paper ... ...plying with this communication, the path of the connection is now going back towards the user, opposite of the original intent. A ping of death is also another type of dos attack.
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. Mesh, Bus, Ring, and Star Topologies The first type of topology to be discussed is the mesh topology. Mesh topologies involve the connection of all computers together on a network through cables.
LOCAL AREA NETWORK (LAN) <>INTRODUCTION<> Local Area Network is a computer network connecting computers within a small area or places. LAN size is limited to a few kilometres. More than one LAN can be connected to one another by using telephone lines or through radio waves. LAN has higher data transfer rates. LAN is built in with inexpensive hardware such as Ethernet cables, network adapters and hubs.