sky x technology

1. MAULIK BHAGAT
COMPUTER ENGINNERING
090500107055
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2.  Introduction
 Why sky X- Technology?
 Working Details
 Application
 Merits
 Demerits
 Conclusion
 Bibliography
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3. Introduction :
 Adding the Sky X system to a satellite network allows
users to take full advantage of the available bandwidth.
 The Sky X technology transparently enhances the
performance of all users on a satellite network .
 The Sky X increases web performance by 3 times or
more and file transfer speeds by 10 to 100 times.
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4. Why Sky X-Technology???
 Satellites
are ideal for providing internet and private
network access over long distance and to remote
locations.
 However
the internet protocols are not optimized
for satellite conditions and consequently the
throughput over the satellite networks is restricted
to only a fraction of available bandwidth.

Thus We need sky x technology to over come these
restrictions and to access maximum bandwidth.
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5. WORKING :

Sky X Technology Overcome TCP Performance
Limitations.
 Even though the TCP is very effective in the local network
connected by using cables or optical fibers by using its
many features
 But the satellite conditions adversely interact with a
number of elements of the TCP architecture, including it s
window sizing, congestion avoidance algorithms, and data
acknowledgment mechanisms, which contribute to
severely constrict the data throughput that can be achieved
over satellite links.
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6.  Thus the advantages achieved by TCP in LAN's
are no longer effective in the satellite link.
 So it is desirable to design a separate protocol for
communication through the satellite to
eliminate the disadvantages of using TCP.
 Sky X products increase the performance of IP
over satellite through a combination of protocol
connection-splitting, data compression.
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7.  The Sky X gateway works by transparently replacing
TCP connections from the client and converting the
data to Xpress Transport protocol (XTP) for the hop
over the satellite link.
 The Sky X system delivers the Web objects to the Sky X
gateway on the client side of the satellite link where
they can be served locally when requested by the
browser, avoiding the satellite delay.
 The sky X client/server system enhances the
performance of the internet and private network
access over satellite links.
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8. XTP Protocol :
 Xpress Transport Protocol (XTP) is a transport layer
protocol for high-speed networks promoted by the XTP
Forum developed to replace TCP.
 XTP provides protocol options for error control, flow
control, and multicast mode.
 Instead of separate protocols for each type of
communication, XTP controls packet exchange patterns to
produce different models.
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9. Characteristics of XTP :
 1> Error control
 2> flow Control
 3>Byte ordering
 4>Prioritization Issues
 5>Multicast mode
 6>Selective Retransmission
 7>Multi-packet handshaking
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10. Sky x-Gateway :

The Sky X gateway works by intercepting the TCP
connection from the client and converting the data to the
XTP for transmission over the satellite.

The Sky X gateway on the opposite side of the satellite link
translates the data back to TCP for communication with
the server.

This architecture offers vastly improved performance while
remaining entirely transparent to the end user and fully
compactable with the internet infrastructure.

No changes are required to the client or server and all
applications continue to function without modification.
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11. Sky X Gateway Network Integration
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12.  The SkyX Gateway XR10 is well suited to networks with
high latency, high bit error and asymmetric links.
 Designed as an remote device, it performs best at
maximum bandwidth with a single, very large FTP—and
supports an industry-best number of simultaneous
sessions and connection turnover rate.
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13. Sky X Client/Server
 The Sky X Client / Server increases the throughput and
efficiency of network access over satellites by
transparently replacing TCP with the Xpress Transport
Protocol (XTP) for the satellite segment of the
connection.
 The sky X client/server system enhances the
performance of the internet and private network access
over satellite links.

14.  The sky X client software installed on the PC’s of the end
user, works in conjunction with a sky X server hardware
unit located at the network hub.
 The Sky X client/server system overcomes the deficiencies
of TCP/IP in satellite –based networks while remaining
entirely transparent to end-user applications. The sky X
client is ideal for use with any satellite receiver card or set –
top box.

15. Application :
 Used for Satellite communication.
 Used for accessing web in fastest speed.
 Used For data transfer, File Transfer efficiently.
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16. Merits :
 1> Increases web performance 3 times faster.
 2> Does not require any modifications to end client
and servers.
 3>Sky X Gateway provides fast, efficient, fully reliable
multicast file transfers.
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17. Future enhancement :
 A product called XipLink which is under
developing will replace the Sky X.
 It is very much the same as the Sky X with extra
capabilities.
 It optimize all TCP/IP traffic, basically the link
itself.
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18. Conclusion :
 Thus Sky -x technology is best suited for for satellite
communication using XTP protocol and Sky x
gateway.
 The Sky X system of a satellite network allows users to
take full advantage of the available bandwidth
 It gives all features required for successful data
Transmission.
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19. Thank you!!!
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