IWL is the leader in network bandwidth simulator, packet loss simulator and latency generator, \n\nwan emulator appliance tool that enhance the productivity of management software developers.
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With the advent of cloud computing and the Internet of Things, the importance of pre-
deployment network performance testing cannot be over-emphasized. Will your app
or device perform under all network conditions ranging from the routine to the
Some apps and devices will simply not work when certain kinds of network conditions
occur. Voice communications, for example, generally become unintelligible at certain
levels of packet delay that are a common occurrence on today’s Internet!
Best practice is to characterize the full performance profile of the app or device. This way
you can avoid inappropriate usage scenarios for your app or device or handle these
scenarios with a message to the user that “the network is currently unreachable”.
First, there’s some basics you should cover when selecting test equipment to characterize
1. Will you use a WAN emulator appliance or a conventional network emulator? Do you
know what level of accuracy is required for your app or device to function properly? A
WAN emulator appliance (a network emulator application operating in a virtualized
environment) can eliminate installation and configuration issues, but may not offer the
level of accuracy required.
2. How does your app or device respond to packet loss (a frequent occurrence on the
Internet)? Can your emulator act as a packet loss simulator? Or, better yet, the
emulator should go beyond simulation and actually drop packets (and introduce other
common impaired network phenomenon, such as delay, reordering, jitter, etc.) before
the packets reach your device or app. so that you can truly understand performance
under various packet loss conditions.
3. Another important consideration, particularly in voice and video apps and devices is
delay or latency. Can your emulator serve as a latency generator by stepping through
all the conditions that are likely to occur that delay the delivery of packets on the
4. Finally, although it is a little complicated, your emulator should serve as a network
bandwidth simulator. You will need to understand how your app or device performs
when bandwidth is limited. In addition, there’s a difference between rate limitation
and bandwidth limitation.
IWL is the leader in network bandwidth simulator, packet loss simulator and latency
generator, wan emulator appliance tool that enhance the productivity of management
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Scotts Valley, CA 95067
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