Essentially, it packages your computer's TCP/IP packets and forwards them to the server where they can actually be put on the Internet. PPP is a full-duplex protocol that can be used on various physical media, including twisted pair or fiber optic lines or satellite transmission. PPP is usually preferred over the earlier standard SLIP because it can handle synchronous as well as asynchronous communication. PPP can share a line with other users and it has error detection that SLIP lacks. Where a choice is possible, PPP is preferred.
'Routers' which are boxes of circuit boards and microchips, which do the essential task of directing and redirecting packets along the network. Much smaller boxes of circuit boards and microchips called 'modems' do the task of interpreting between the phone lines and the computer. The packets are all switched into a destination and reassembled by the destination computer. Today's Internet contains enough repetitious and interconnected circuits simply to reroute the data if any portion of the network goes down or gets overloaded. The packet-switching nature of the Internet gives it sufficient speed and flexibility to support real-time communication, such as sending messages to other people in a chat environment (IRC).
On the other hand IP is internet protocol and this protocol makes sure that the data packets know where to go. It makes sure that the data packet knows the route to the receiver of the data packet. IP address is stuck on the data packet it is like a label that has the information of where the data packet has to go and the information of the sender. In order for communication to take place the information has to go through four layers and it all happens in split second. Explain each of the application layers and the PDU’s within them There are four layers application, transport, internet and network access.
Some of its useful features are: User experience is improved. Uses the resources that already exist and reduces cost which reduces the need for upgrades and growth. Administrators are allowed control over networ... ... middle of paper ... ...tiple IP addresses and VLANs because of its connection with different VLANs and three subnets. Up receiving the message, the router being layer 3 device strips off the Ethernet frame and reads the IP packet. The router looks into the routing table and notices that the destination IP address (184.108.40.206) is within a subnet it controls ( 220.127.116.11).
Networked PCs are a great example. Tasks are accomplished at the computer and at other computers using communication. In the definition of a network the computer hardware is considered part of the user in this definition. The hardware used to connect to other computers is considered part of the protocol.
· routers, like every other device on the network, send and receive data on the network, and build ARP tables that map IP addresses to MAC addresses · if the source resides on a network that has a different network number than the desired destination, and if the source does not know the MAC address of the destination, it will have to use the router as a default gateway for its data to reach the destination · routed protocols direct user traffic, whereas routing protocols work between routers to maintain path tables · network discovery for distance-vector routing involves exchange of routing tables The next chapter discusses the functions of the transport layer. Bibliography: www.news.com
TCP/IP Overview When designing networked applications one key protocol stands out as the foundation for making it possible. That protocol is TCP/IP. There are many protocols out there that allow two applications to communicate. What makes TCP/IP a nice protocol is that it allows applications on two physically separate computers to talk. What makes TCP/IP great is that it can do with two computers across a room or across the world.
The transport control protocol (TCP) is the backbone of the Internet; it is basically how data packets are sent to their destination from where they are originally. This protocol helps connect two networks together, so that the IP address protocol can deliver the packets. The protocol makes sure that the data is delivered exactly the way it was sent, by doing error checks. Web browsers use this protocol to send emails and connect to the World Wide Web servers. Application
These functions include configuring the DHCP server, security settings, firewalls, access restrictions, etc. Configuration the wireless access point is also done via a similar interface; a USB cable us used to connect to the access point firmware and configure the SSID on the network as well as the WEP key for secure wireless communications. The operating systems present on the various computers include Microsoft Windows 98, NT, 2000 and XP Professional. These provide a friendly user interface to the operators and, because they are from the same vendor, they interoperate efficiently. Because of their age, Windows 98 and NT are in the process of being phased out in favor of Windows XP Professional.
Routing tables are either created statically, or by the systems administrator configuring the system, using the startup or configuration fiels, to used a pre-defined, unchanging route.dynamically. · There are protocols, part of TCP/IP, that will dynamically modify the routing table in response to events. · Adding a host to the network requires obtaining, installing and configuring the necessary network hardware, gather the required information including IP address and hostname of the new host, the gateway and the name server, the network address and the subnet mask, modify the appropriate configuration and startup files with that information, make sure the new host has an entry in the domain name service, test the connection.