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Introduction to Wan Acceleration Devices
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
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