As the internet growth rate has been reached to a very high level, and using a heavy multimedia application such as video and audio stream, Qos (Quality of Service) technology has become more relevant and important. IPV6 (Next generation internet protocol) have more features and characteristics then IPV4 such as providing more address space and new fields that can be used to enhance and make the usage of IP Network more frequent even with the sensitive traffic flow. The currently used Ipv4 which has supported the internet for more than 20 years have many problems such as No QOS were implemented, so many other protocols are used to guarantee request for the sensitive traffic flow. The next generation internet protocol IPV6 has implemented two fields that can be used as a tool to support QOS. These fields are Flow label 20 bit identification field and a 8 bit Traffic Class (TC) field. The flow label field is used by a source to label a sequence of packets for which it request special handling by IPV6 routers, the traffic class field is used to show the priority level of Traffic flow. In this paper we will discuss and investigate IPV6 based End to End QOS methodology on different parameters such as end to end delay, packet loss and throughput delay using simulation performed with Network Simulator
Keywords: IPV6, QOS, Flow label, Traffic Class.
1-Introduction
The present version of IP (IPV4) that works from 1980 has supported the internet rapid growth from the beginning. It is proved that the implementation of IPV4 is easy and interoperable. But the internet growth rate has been reached to a very high level when compared to its begging level, which creates many problems such as exhaustion of address space, configuration pro...
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IPv6-the next version of IP, already implemented in some of the newest Internet ready devices. IPSEC and congestion control (ECN) functionality are already put into service. Increased address space will decrease the effectiveness of attacks scanning for vulnerable machines.
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This paper is about a computer pioneer before the 1990s. A computer pioneer is someone who has had an impact in the development or improvement of the computer. The paper will discuss the computer pioneer’s legacy and how it has affected the change of computers. The topic of this paper is TCP/IP and their designers, Vinton Cerf and Robert Kahn.
The Open Systems Interconnection (OSI) reference model has significantly influenced the development of internet protocol we use today. Created in the 1980’s by the International Standards Organization (ISO), a multinational body dedicated to worldwide agreement on international standards, this reference model has defined the entire network communication process into seven structured layers. In ascending order these layers are the physical, data link, network, transport, session, presentation, and application layers. The purpose of this model was, and still is, to simplify and set a standard for the design of communication and networking products that can communicate with each other, regardless of system differences.
IPv6 has no fixed compatibility with IPv4. Therefore, from the beginning of the introducing IPv6, several transition techniques have been provided, The IPv6 transition mechanisms are a set of rules applied in hosts and routers, with some effective strategies for addressing and deployment, which are designed to transmit from IPv4 to IPv6 or vice versa with the least interferences. But some of these techniques had not been accepted by internet technical community due to the lack of adequate technical reliabilities. The most successful and widely used transition methods probably are Dual stack, Tunneling and Translation techniques. In the Dual stack technique, both IPv4 and IPv6 can perform concurrently on the same foundation. However, they both can use the same router but not all of the IPV4 policies are supported by IPv6 and in these cases other techniques can be used (Jayasekara et al, 2012). One of these techniques is tunneling, in this method IPv6 packets will be encapsulated in IPv4 packets to transfer across an IPv4 infrastructure. Furthermore, it can be said that several different tunneling technologies have been developed to enable IPv6 connectivity across an IPv4 network and vice versa, generally they have been classified as configured or automatic (Rooney, 2011)In automatic tunnels no pre-configuration is needed and the destination address will be calculated automatically from the IPv6 next-hop address of the IPv6 route, while in configured techniques the end-point hosts will require to configure their IPv4 addresses before the communications through some other techniques such as DHCP, manual configuration...etc. (Loshin, 1999). Another popular technique is translation, in this approach a special method will be provided to...
Network Address Translation (NAT) is a standard used to allow multiple PCs on a private network to share a single, globally routable IPv4 address. NAT enables a user to have a large set of addresses internally and usually one address externally. The main reason NAT is often deployed is because IPv4 addresses are getting scarce. NAT is an immediate, but temporary, solution to the IPv4 address exhaustion problem that will eventually be rendered unnecessary with the deployment of the IPv6. The Internet Engineering Task Force has been aware of the impending depletion of the current address space for almost a decade.
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The purpose of this paper is to present a proposal to implement Internet Protocol version four (IPv4) also known as Transmission Control Protocol/Internet Protocol (TCP/IP) structure as our primary means of communication within our network infrastructure. We are currently using a legacy mainframe system that limits are current means of network connectivity with other evolving network systems and it is in our best interest that we look into the future as well as keep up with changing times as Information Technicians. I will present a detailed analysis of the TCP/IP brief history, understanding of IPv4 addresses, subnetting, configuration, and the benefits of using the TCP/IP structure. This will greatly increase the overall success rate of our business
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. In this paper I will show you how TCP/IP allows a wide array of computer hardware to work together without ever having to knowing what the other machine is or how it even works. At the same time you will learn how it allows information to find its way around the world in a faction of a second without knowing in advance how to get there.
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The TCP/IP is the most important internet operation protocol in the world. While IP protocol performs the mass of the functions which is needed for the internet to work. It does not have many capabilities which are essential and needed by applications. In TCP/IP model these tasks are performed by a pair of protocols that operate at the transport layer. The Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP). These two protocols are vital when it comes to delivering and managing the communication of numerous applications. To pass on data streams to the proper applications the Transport layer must identify the target application. First, to be able to attain this, Transport layer assigns an application an identifier. In the TCP/IP model call this identifier a port number. Every individual software process needing to access the network is assigned a un...
Internet Protocol version four (IPv4) was introduced by International Engineering Task Force (IETF) is 1981 via RFC 791 as a feasible solution to connect computers for communication. With a 32 bit address space covering 2^32 addresses, it was considered sufficient to provide an IP address to all users over the world. But with the requirement of IP for various technologies like sensor networks, Radio Frequency Identifiers (RFID), cell phones, home appliances, and, automobiles resulted in the depletion of the IPv4 address space (Marsan, 2011) and the emergence of IPv6 in 1995 via RFC 1885 and later RFC 2460 in 1998. IPv6 provides certain advantages over IPv4, such as larger address space, better routing table manageability, address auto-configuration, and better security features as compared to IPv4 (C...
The overlay networking technologies have become very important part of the internet today as more and more sites are connecting to each other in all over the world. The overlay networking technologies give freedom to implement any routing protocol and network design on top of the internet. There are many proven overlay technologies are there, however they also have some shortcomings, which lead us think about more scalable and secure overlay technology. Some of the disadvantages of the overlay technologies that are currently being used are complicated configuration and networking topology, difficult in expansion and maintenance, GRE (Generic Routing Encapsulation) tunnel’s inability to traverse NAT, IPsec’s inability to support dynamic routing [1].
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