Wan Optimization Blog

TCP Acceleration

 
TCP Acceleration
The TCP Acceleration Performance Enhancing Proxy (PEP) is an optional feature that can be enabled on the Wan Accelerator to significantly enhance performance when sending TCP traffic over suboptimal network conditions or to improve TCP performance of slow TCP stack implementations.

Note: The PEP TCP Accelerator is currently available in v.4 beta.
Limitations of Standard TCP
Most applications such as Email, HTTP, [...]

Packet Loss Recovery

 

Modern TCP stacks have become more efficient at dealing with latency by adding TCP Window Scaling and Selective Acknowledgements. However TCP is still vulnerable to packet loss and this has a drastic impact on network performance. Where WAN performance is limited by the negative effects of packet loss and retransmissions, Packet Loss Recovery can be configured.
Why is Packet Loss important?

Loss has [...]

Router Mode – Out of Path

Wanos runs in bridge mode by default. In some cases it might not be possible to place a simple bridge appliance in-line or in-path. In this scenario out of path can be used by configuring the wan optimizer in router mode or server mode. This mode needs to be manually configured.

When router mode is configured, only the physical wan0 interface [...]

Virtual Wan Optimization – ESXi Lab Guide

Step by Step Guides with screenshots:
Single VM install on ESXi
Complete Lab on ESXi

Quick Start Guide:
By default Wanos runs in bridge or switch mode. In this back to back lab example, theoretically no configuration is required on the Wanos appliance to test optimization. In other words, it is plug and play, as long as the wan0 and lan0 are plugged into [...]

High Availability

Wan Optimization high availability or redundancy can be achieved by running a backup network cable parallel to the Wanos device.

When running RSTP the Wanos device is placed between two switches, connected via wan0 to the outside switch and lan0 to the inside switch. The backup link is cabled between the same two switches. Hence two cables run between the outside [...]

MultiSite

Wan Optimization Multipoint enables optimization between multiple fully meshed sites. The default configuration is sufficient for optimization over a point to point link. When enabling MultiSite on a dedicated appliance running the HDD/USB image, additional disk space may be required. This allows for a larger datastore which caters for the additional sites. If required, please see the steps to add [...]

Configuring QoS

 
Configuring Wan Optimization QoS
Any Wan Optimizer is not complete without QoS. Not only because QoS can be the best form of bandwidth optimization but also since Wan optimization techniques change the traffic signatures similar to how encryption does. Configure QoS to ensure traffic gets the most appropriate treatment over the WAN.  Wanos supports  classification, marking, shaping and priority queuing.
Classification
In this first [...]

vSphere vSwitch Guide

Wan Optimization Virtual Appliance on VMware vSwitch
When installing the virtual appliance, these guidelines can ensure that a bridge loop does not form. Both physical and virtual appliances bridge traffic. The in-path interface is a bridged connection between the lan0 and wan0 interfaces. The lan0 and wan0 virtual interfaces needs to map to distinct virtual switches and physical interfaces. In other [...]

Pass-through Traffic Policy

WAN Optimization QoS is essential to any optimization solution. This is because some protocols will always require a higher priority over another. In some cases the traffic needs be to be shaped or can be excluded from optimization. For example attempting to compress and deduplicate encrypted traffic is often counter productive. In this case an exclusion rule based on the protocol [...]

Quick Start Guide – VMware

 
Wan Optimization Virtual Appliance – VMware

Step by Step Guides with screenshots:
Single VM install on ESXi
Complete Lab on ESXi
 
Quick Start Guide:
It is recommended to use the OVA package to create the wan optimization virtual appliance. When using the VMDK file steps 1-3 from this guide is required.

By default Wanos runs in bridge or switch mode. In this back to back lab [...]

USB Appliance with physical drives

Physical Drives
After booting the wan acceleration appliance from USB, by default the datastore will be mounted on the boot partition. For the best performance the datastore can be mounted on a solid state drive. The .img raw image file can be written directly to the destination drive as per the USB Start Guide. When SCSI drives are used, it is recommended to boot [...]

Quick Cabling Guide

Connecting cables to the correct ports
User workstations and Servers connect to the lan0 network. The wanos appliances connect to the wan on the wan0 port.

Here are a few tips and tools to assist in the process:

On default, eth0 would be assigned to wan0 and eth1 to lan0.
The web interface displays a green indicator when a port is connected.
If the log displays “Peer detected on [...]

Quick Start Guide – Hyper-V

Step by Step Guides with screenshots:
Single VM Install on Hyper-V
Full lab on Hyper-V
 
Quick Start Guide:

By default Wanos runs in bridge or switch mode. In this back to back lab example, theoretically no configuration is required on the wan optimization appliance to test optimization. In other words, it is plug and play, as long as the wan0 and lan0 are [...]

Quick Start Guide – Bootable USB

Wan Optimization Appliance – Bare Metal Whitebox
A Wanos Wan Optimization Appliance is very simple to get up and running. All that is required is a very good quality USB, Compact Flash or physical hard drive, a minimum of 2 GB RAM and two Ethernet interfaces. Note when making the bootable appliances, make sure the destination drive name is specified correctly to [...]