Xiplink - Maximizing Network Capacity - Jorge Alvarado

1. Maximizing Network Capacity
BandwidthOptimization and Data Compression
Sales Contacts:
VP Americas Joe Zerucha jzerucha@xiplink.com
Americas SE Jorge Alvarado jalvarado@xiplink.com

2. Agenda ::
1. Greetings
2. DefiningWireless Link Optimization
3. Maximizing Network Capacity
a) Internet Access
b) VPN Networks
c) UDP traffic
d) Corporate Applications
e) Link Bonding
f) Cellular Backhaul
4. Maximizing Return of Investment

3. Defining Wireless Link Optimization ::
Traditional Acceleration:
• Fast Start, AFR, 3-Way Shake, etc.
• Fills Available Capacity (95%+)
•Value Add (TDMA VSAT) Or Low Cost
Wireless Link Optimization:
• Streaming TCP Compression
•UDP Optimizations
•Advanced Cellular Compression (ACC)
•Class Based QoS
• Internet Optimizations
• Exceeds Available Capacity
Layer 7 Optimization:
•Spoof Citrix, CIFS, SSL, etc.
• Rapid Application Responsiveness
•Very High Capital Cost
NewValueAddOpportunity
IncreasedCostofSolution
XipLinkWireless Link Optimization operates primarily at the network
layer with some application layer access for web acceleration. This
allows high capacity TCP and UDP optimizations at low capital cost.

4. XipLink Technology :: Deployment Scenarios

5. Maximazing Network Capacity:
INTERNET ACCESS
Start Saving BandwidthToday!

6. Consumer based internet access over VSAT
Hundreds of subscribers spread over a wide geografical region
~70% or higher HTTP traffic blend
Service Provider motivation to reduce OPEX through bandwidth cost
reduction.
Internet Access :: Customer Environment

7. Single-sided hub options that accelerate and save bandwidth
XiPixTM
Compression trans-codes outbound jpeg images
 Works for jpegs in web pages
 Automatically re-samples and reduces the “bits per pixel”
 Protects customer satisfaction while gaining bandwidth
 User (SP) defined quality level for quality vs. cost trade-off
HTTP Gzip Gateway for “hub-side to browser” file compression
Immediate Optimization with a single XA-Appliance hub-side deployment
VPN Network :: Network Performance Improvement

8. Achieved Performance:
Reduced total outbound traffic by 18.3%
No trouble calls received by service provider from subscriber base
relative to performance and/or quality of service
Benefits to Service Provider:
Sizeable bandwidth OPEX cost reduction
Improved customer response times: snappier downloads
Low-cost growth/scalability: redundant appliances capable of
supporting projected subscriber growth for the next 3 – 5 years

9. Maximazing Network Capacity:
VPN (Encrypted Links)
Start Saving BandwidthToday!

10. Encrypted Traffic
Different type of customer applications
Remote branches connected to corporate servers
Service Provider motivation to improve the network performance
VPN Encrypted Networks :: Customer Environment
1Mbps committed BW available

11. VPN Network :: Network Performance Improvement
Implementing a 2-way Optimization solution
Use Packet Coalescing in order to fill up the pipe
Packet payload compression before encryption
Implement State of the art Transport control techniques
Immediate Optimization on an Encrypted network by deploying a bracketed
solution

12. Maximazing Network Capacity:
UDPTraffic
Start Saving BandwidthToday!

13. How can VOIP benefit from optimization?
Most VOIP is headers – approximately 40%!
Most headers do not change much from packet to packet
Multiple streams (calls) each have their own overhead and
many common headers
Inefficiencies applies to all UDP – standard VOIP as well as
Skype etc, but in particular small packet applications (e.g. not
full frame video streaming)
These real-time steams need to be prioritized but managed
through the network
Effective voice codecs are well established and provide
excellent options to tune quality versus size. Little need to
touch the data stream.
UDP Networks :: Customer Environment

14. How can VOIP, Skype and other streaming protocols be
optimized?
By compressing the headers
By coalescing packets sharing a link together into one
packet
By prioritizing the real time traffic through the network
intelligently for better quality and control
VoIP Network :: Network Performance Improvement
Immediate Optimization starting from the first call

15. Codec & Bit
Rate (Kbps)
Capture
Window
(ms)
# of
Calls
Bandwidth
Savings %
PPS
Benefit
Ratio
G.729 (8 Kbps) 20 1 8% 1
G.729 (8 Kbps) 20 2 33% 2
G.729 (8 Kbps) 20 5 47% 5
G.729 (8 Kbps) 20 10 52% 10
G.729 (8 Kbps) 20 20 54% 20
G.729 (8 Kbps) 20 50 56% 50
G.729 (8 Kbps) 20 100 57% 70
G.729 (8 Kbps) 20 200 57% 70
Benefits Example: Benefit Against Number of Calls
G.729 is one of most popular VOIP codecs.
Converges towards 57% benefit – use less than half the bandwidth!
Assumes IP network. Saving for Ethernet networks would be even larger.

16. Reduce bandwidth used by voice and other traffic with small
packets. Applies to both directions, or unidirectionally.
Payload is unaffected by optimization
• No transcoding is performed – assumes users have already
selected reasonable VOIP codecs for their network
Dramatically reduce PPS on wire
• Coalesce packets along time axis
• Will provide benefit for low connection counts where
additional delay can be tolerated.
• Aggregate packets across concurrent voice streams
• Will provide benefit where several concurrent voice
calls are active.
• Integrates with XipOS traffic shaping and QoS technology
XRT Optimization – Benefits

17. Maximazing Network Capacity:
Corporate Applications
Start Saving BandwidthToday!

18. • Corporate applications transmit higher amounts of duplicated
data.
• A huge variety of ERP, CRM, etc…
• Update / backup databases
• Remote branches communicating with a Corporate office
Corporate Applications :: Customer Environment

19. Cache technique reduces bandwidth for repeating data
Implemented at network layer to capture repeats from various sources
Works for partially repeating images like web pages with dynamic content
 Dramatic bandwidth savings for 2nd/3rd pass data – Up to 80% reduction
 Systematically caches “viral” videos, software updates, landing pages
 No user setup required—dictionaries are built and flushed automatically
Byte Caching (Data Reduction)
Corporate Applications :: Network Performance
Improvement
Immediate Optimization after the 2nd iteration

20. Video Surveillance Optimization :: Dramatic
Reductions by enabling XipLink Optimization
Video Surveillance Application running
on a 128Kbps upstream satellite link
(30fps/Low resolution)
After enabling Optimization on XipLink Optimizers at
both ends, result in Bandwidth savings close to 50%.

21. Byte Caching Results :: Dramatic Reductions
Byte Caching is a new feature running on XipLink Appliances from 4.0 release on.
Byte Caching runs over bracketed links (Devices at both ends of the Link) .
Enabling Byte Caching on XipLink Optimizers reduce BW utilization for file transfers
over the Satellite Link close to 60%.

22. Maximazing Network Capacity:
Link Bonding
Start Saving BandwidthToday!

23. Balances TCP sessions over multiple links
Packet Balances up to 10 TCP sessions over multiple links
Selects the best path for UDP traffic
 Allows more capacity to be fairly utilized with high uptime
 Single stream sessions exceeding one link can be supported (video)
 Intelligently balances to meet policies based on user-defined profiles
 Maintains session persistence on link failure/cutover (High Availability)
Link Balancing technology allows the intelligent distribution of traffic among multiple parallel links
while performing full optimization. IP traffic can be transmitted through both paths simultaneously.
Each link can have variable bandwidth and the XipOS Advanced QoS will adapt intelligently. Flows
will attempt to maintain the same path whenever possible to maximize in-order delivery. Uses
XipLink Lightweight Tunnels (XLT) with NAT to direct IP traffic between the separate links. Bonded
traffic is fully spoofed and optimized. Supports up to two links today with up to eight in future
releases. Will also balance/bond UDP traffic over multiple links in future release.
Link Bonding :: Network Performance Improvement

24. InternetRemote
LAN
Bonded Link
Link Bonding :: Network performance improvement
 Increases capacity by balancingTCP sessions over multiple links.
 Allows one session to be bonded across two links for added bandwidth.
 Picks the best path for UDP traffic.
 No need to reschedule the RF plan

25. Maximazing Network Capacity:
Cellular Backhaul
Start Saving BandwidthToday!

26. • Increasing demand for BW
• Hundreds of users per remote site
• VoIP and Data fighting for the BW
• Different type of applications
• Different type of traffic TCP/UDP
• Expensive Infrastructure
• Inefficient transport
Cellular Backhaul :: Customer Environment

27. ACC provides significant benefits for cellular backhaul
• GSM Voice
• EDGE data traffic
• 3G (UMTS) Voice/Data
• CDMA Voice/Data
Transparent
• Works with any IP based network (e.g. all Abis over IP)
Vendor Agnostic
• Lossless compression (no transcoding)
Cellular Backhaul :: NetworkPerformanceImprovement
AdvancedCellular Compression/PacketLearning

28. Save 35 % + on CellularAccess
Monetize by:
• Provisioning smaller bandwidth
• Increasing margin on cellular data sales
Capital cost payback in 6 months or less...Example;
• 1 Mbit/s Per remote (500/500)
• 1Mbit/s * 35% Savings = 350 Kbit/s
• 0.35 MHz @ $5,000/MHz/Mo is $1,750/Mo
• XA Capital Cost $5,000** – Profitable after 3 months
** Includes hub costs, not XHO
Cellular Backhaul :: NetworkPerformanceImprovement

29. ACC:: Measured Benefits – Recent Testing
Tests Results - % Bandwidth Reduction:
• GSMVoice 20 - 25%
• EDGE DataTraffic 35% +
• 3GVoice 20% +
• 3G Data 5% - 10% (Encrypted)
• CDMAVoice 60%
• CDMA Data 35% +

30. Maximazing Return on Investment
Start Saving BandwidthToday!

31. XipLink is the technology leader in developing wireless
bandwidth optimization products that deliver the
industry’s fastest return on investment.
Typical
Break Even
<4 Months
SCPC Link
Rapid ROI :: Low Capital Cost = Fast Return

32. XipLink :: Extensive Global Implementations