A fragmentation control approach in jumbo frame network

Nowadays, an amazing growth of the Internet has impacted tremendously on the network’s capability; from hundreds to thousands of Gigabits/s in the center of the network as well as at the access, and may soon to see an amazing amount of packets that needs to be processed. In the future, such a remarkable growth, there is an urgent need for an integration of packets of bigger sizes, called Jumbo frames. Jumbo frame is an approach that permits higher utilization as it decrease the amount of packets processed by the core routers while not having any adverse impact on the link utilization of fairness. The one major problem faced by Jumbo frame networks is that network paths are set not to transmit Jumbo frame capable end-to-end. This approach can’t provide a reasonable performance; as in reality, many paths have bigger Maximum Transmission Unit (MTU)s and many Internet networking gear do support bigger MTUs and the performance is highly depends on the size of a packet. This process leads to suboptimal throughput and is wasting Internet resources. Therefore, it is advantageous to discover the link MTU in order to avoid fragmentation when dealing with Jumbo frame. This research proposes the use of the MTU discovery method with Jumbo frame and the modified IP fragmentation mechanism which are used with the Jumbo frame network to reduce packet drop and throughput by decreasing the overhead in the network. And also, on how to discover the return effective MTU for Jumbo frame situation. For the purpose of evaluation, network simulator NS-2.28 was set up together with Jumbo frame and the proposed methods. Moreover, to justify the research objectives, the proposed algorithm and technique for MTU discovery with Jumbo frame were compared against the existing MTU handling mechanism and techniques that are found in the literature review using simulation metrics such as packet drop and throughput

An Application-Based Performance Evaluation of NASAs Nebula Cloud Computing Platform

The high performance computing (HPC) community has shown tremendous interest in exploring cloud computing as it promises high potential. In this paper, we examine the feasibility, performance, and scalability of production quality scientific and engineering applications of interest to NASA on NASA's cloud computing platform, called Nebula, hosted at Ames Research Center. This work represents the comprehensive evaluation of Nebula using NUTTCP, HPCC, NPB, I/O, and MPI function benchmarks as well as four applications representative of the NASA HPC workload. Specifically, we compare Nebula performance on some of these benchmarks and applications to that of NASA s Pleiades supercomputer, a traditional HPC system. We also investigate the impact of virtIO and jumbo frames on interconnect performance. Overall results indicate that on Nebula (i) virtIO and jumbo frames improve network bandwidth by a factor of 5x, (ii) there is a significant virtualization layer overhead of about 10% to 25%, (iii) write performance is lower by a factor of 25x, (iv) latency for short MPI messages is very high, and (v) overall performance is 15% to 48% lower than that on Pleiades for NASA HPC applications. We also comment on the usability of the cloud platform

Performance Evaluation of IPv6 Jumbogram Packets Transmission using Jumbo Frames

IPv6 is an ultimate solution to the Internet address exhaustion. It is believed, the protocol will be requested by not only human but also everything on the earth surface. Furthermore, the improvement on the protocol is important to achieve IP packets transmission efficiently. Processing technology has been improved to become very fast packet processing both in host as well as intermediate systems. The lower layer technologies have supported to transmit Gigabits data per second. However, there is a limitation on transferring large data due to the current MTU on the widely used link layer technology which is Ethernet is still 1500 bytes. This research aims to evaluate performance of IPv6 packets transmission using jumbo frames. The evaluation was done by transmitting IPv6 packets larger than 1500 bytes in Windows  operating  systems.  The  results  show,  transmitting larger packets size using jumbo frame can increase the network throughput by up to 117%

Performance comparison of transmitting jumbo frame on Windows and Linux System

IPv6 is the successor of IPv4, the current Internet Protocol that runs out its address. It offers some improvements including simpler header format and extension header resulting in faster transmission of IP packets. However, IPv6 is a network layer protocol that requires lower layer services. IP packets from the network layer pass to data link layer to be encapsulated by layer 2 headers and trailer to become frames. Ethernet is the most widely used data link layer protocol in the current network devices. The technology is always improved to support high speed transmission. However, from standard Ethernet until ten gigabit Ethernet, the size of MTU remains unchanged at 1500 Bytes. This prevents the network from gaining an optimum performance on transmitting IP packets and operating systems cannot take full advantage of the high-speed performance of Gigabit Ethernet. This research aims to implement the transmission of IPv6 packets using jumbo frame on a test-bed environment. The implementation can be used to justify the impact of jumbo frame on the network as well as operating systems performance. The results prove that the OS used on implementation of jumbo frame affects on the network performance. The highest percentage of increasing throughput is 33.6% when both sender and receiver are running Windows. The decreasing delay by 54.36% was happened when using Linux in sender and Windows in receiver

Development of Testing Standardization Regulation of the OLT XG-PON Equipments to Support Broadband Access in Indonesia

This study aims to provide a reference to the technical specifications of the Optical Line Termination (OLT) XG-PON equipment for improving standardization regulations (Perdirjen Postel No. 257 of 2008). The technical specifications tested in this study are the nominal rate capability, wavelength range, and jumbo frame of the OLT XG-PON equipment. The research acquired a reference to the nominal rate using FEC is 8.5 Gbps downstream direction, and 2.5 Gbps upstream direction, upstream wavelength range is 1260-1280 nm and downstream is 1575-1581 nm, and jumbo frame capability is 2000 Bytes