An introduction to Wan accelerators as presented to a group of network engineers.

1. Introduction
to
Wan Acceleration Devices
Rishabh Dangwal
About me:Trivia geek, redbull addict & Independent security enthusiastic.
Currently employed at Orange Business Services
www.theprohack.com

2. Agenda
 The Elephant & the mice
 Spoke end issues
 Wan Acceleration
 Wan Optimization
 The Techniques

3. Lets talk about..
 A mice..& An Elephant
(I am not kidding..)

4. A *Closer* look ..
 Short-live TCP connections
 <1 sec
 Causes timeouts (due to
3WHS)
 Long lived TCP connections
 >1 hour
 Consistent, but take huge
network resource

5. Issues at Spoke End
 Application performance
 Bandwidth choking
 Latency/jitter/chatty applications
 Complex Infra
 Different types of servers
 Storage
 Data Security? Compliances ?

6. Issues at Spoke End continued..
 QOS ?
 Reactive measure
 Almost useless in solving congestion issues
 Increase Bandwidth ?
 Is not a solution
 Rise of hybrid networks.

7. WAN Acceleration?
 Techniques for increasing data-transfer efficiency
across WAN
 At core is WAN Caching
 Maturing at a good rate

8. WAN Acceleration continued..
 Kick in Wan accelerators & we have got –
 Less local servers
 Achieve LAN Level app performance
 Centralize
 Converge
 Preserve services

9. Wan Optimization
 Traditional Wan Optimization
 Results
 Changes header info
 Applications break, services may not work
 *Extra* integration required
 Moooore downtime
Image credits : Cisco

10. Wan Optimization Continued..
 Latest Deployment
 Results
 NO header changed*
 NO app misbehavior*
 Data Offloading
 Less headaches
*till the time your connectivity is stable
Image Credits: Cisco

11. The Techniques
 Selective Acknowledgement
 Window Scaling, Protocol matching
 Latency Mitigation
 Reduce Data Redundancy

12. The Techniques continued..
 Pattern Matching
 Fingerprinting & Reconstruction
 Load Shedding
 Chunk Storing
 & much *much* more..

13. Bottomline
• Is one of the next big things
• Need of hour in complex hybrid networks
• BigData over WAN?

14. Questions ?

15. Please put a static route for Questions, queries and
Feedback on this presentation towards
admin@theprohack.com