Specifically optimized for long delay, high bit error and asymmetric bandwidth conditions. Determine how much bandwidth is wasted from retransmissions. Receive all updates via Facebook. Free maintenance service, Free mail id on your website name,. Web Pre-Fetch functionality further enhances the performance of HTTP transfers over the satellite link by pro-actively retrieving the many embedded objects on a Web page along with the requested HTML page. Newer Post Older Post Home. The Sky X gateway can also be used in multilink configurations where a single Sky X gateway hub unit enhances the performance of multiple separate outbound links from a single uplink facility.
The Sky X multicast fanout, an integral component of the Sky X gateway, transparently converts TCP unicast connections into reliable multicast transfers. In order to avoid the possibility of congestive network meltdown, TCP usually assumes that all data loss is caused by congestion and responds to this by reducing the transmission rate. So the congestion avoidance mechanisms used by TCP is also not suited for the satellite link since it reduces the data flow through the network and thus reduces the overall rate of data transfer. However many implementations of TCP are limited to maximum window size of 64 KB and most operating systems use a default window size of only 8 KB , imposing a maximum throughput rate over a satellite link of only Kbps per connection , regardless of the bandwidth available. The Sky X gateway can also be used in multilink configurations where a single Sky X gateway hub unit enhances the performance of multiple separate outbound links from a single uplink facility. In contrast, Sky X is able to maintain full usage of the link regardless of the round-trip time. The statements contained in this press release that are not purely historical are forward-looking statements within the meaning of Section 21E of the Securities and Exchange Act of , as amended, including statements regarding Packeteer’s expectations, beliefs, intentions or strategies regarding the future.
This architecture offers vastly improved performance while remaining entirely transparent to the end user and fully compactable with the internet infrastructure.
Accelerate file transfers, large and small. Policy-based enforcement of application priorities and bandwidth allocation for capacities of up to MB: Replication sessions complete up to times faster and are not subject to the stalls and session drops associated with packet loss. Also it will work with real time operating systems.
Create custom criteria for measuring and controlling traffic.
Computer Science (CSE) Seminar Topic on Sky X Technology
Mentat also licenses the Sky X gateway technology in software source code form for integration with satellite modems, VSATs, routers, caching systems, or any other satellite connectivity equipment.
SkyX Accelerator technology overcomes latency effect on TCP over high-bandwidth links by using bandwidth much more efficiently and improving replication performance over high capacity data center-to-data center links. Users should expect similar results for any large, single- connection data transfer. Sky X multicast fanout is built on the industry leading Sky X gateway IP over satellite performance enhancement system.
XML and Web Acceleration. Performance benefits syx applications other than Web and file transfers depend on the characteristics of the applicationbut will typically fall between these two extremes.
Even though the TCP is very effective in the local network connected by using tehcnology or optical fibers by using its many features such as LPV6, LPsec and other leading-edge functionality. OCR is an optical character recognition and Thus the window sizing mechanism of the TCP limits the rate of flow of data through satellite link. Using standard file transfer applications such a FTP the Sky X gateway can deliver a copy of a file to every remote site with only a single transfer.
Combinations of the criteria are supported, enabling more targeted monitoring and control. When TCP protocol design limitations, high latency and lost packets threaten application connection speed, SkyX Accelerator ramps flow, fully utilize links and keeps data moving along.
Sky X gateway can also simulate link speed bit error rate and rresearch conditions of the existing system on the sky X gateway test network. We can overcome these restrictions by using the Sky X protocol. Web Pre-Fetch functionality further enhances the performance of HTTP transfers reearch the satellite link by pro-actively retrieving the many embedded objects on a Web page along with the requested HTML page.
Because there is only a single path over the satellite with no intermediate routing, any gaps in the packet sequence can be assumed to be data loss due to corruption rather than network congestion. In contrast, multicast technology makes it possible for multiple recipients to receive a single data stream. This architecture maintains full TCP reliability and end-to-end flow control.
The following file transfer tests illustrate the benefits of Sky X performance enhancement for different windows sizes, link band-widths, round-trip times, and bit error rates.
Research Paper Free Download
Forward-looking statements involve risks and uncertainties, which could cause actual results to differ materially from those projected. The SkyX is ideal as a remote, or hub, device to bring high network performance to lower bandwidth networks.
Bit Error Rate vs. The adverse effects of using TCP over satellite link in its various features are as follows: The sender does not assume that any data is lost or corrupted until a multiple of the round-trip time has passed without receiving an acknowledgment.
The Sky X system replaces TCP over satellite link with a protocol optimized for the long latency, high loss and asymmetric bandwidth conditions of the typical satellite communication.
Pqper can be an especially powerful tool for satellite networks or similar architectures where the multicast transfer can take advantage of an underlying link layer broadcast media.
XTP is an open standard developed by the XTP Forum, a non-profit organization composed of networking protocol researchers, implementers, and user organization. Monitor response time for each application. Unfortunately, the only multicast capability built into the Internet Protocol is a UDP-based, unreliable, best-effort service paprr is only appropriate for real- time streaming applications such as event broadcasting.