Q
Problem solve Get help with specific problems with your technologies, process and projects.

# Packet interval times and probabilities

What do the packet size and probabilities represent in a network simulation program, i.e. Comnet III?

And what do Packet interval times and probabilities represent?
You should probably ask the Comnet III people.

However, the not-so-easy answer has to do with traffic modeling. The most common approach is to define packet traffic in terms of packet intervals (or "inter-arrival") times ? this is the time between packets arriving at a certain point. If the variable 'T' is time and 't' is any measured change in time, then the chance of a packet arriving in any period T+t is P(t), where P(t) is a distribution that describes that probability.

One of the classic probability distributions used is the Poisson distribution (which I won't even try to reproduce here - check a statistics book ? suffice it to say it involves exponentials). It is used because it is mathematically tractable and because it looks about right. However, most finicky network theoreticians agree that it doesn't do the job quite right. Others suggest that Pareto distributions are more apt. No one is quite happy.

No doubt, Comnet III uses some particular probability distribution to define the inter-arrival times of packets. Or has you define it manually.

This was last published in April 2003

## SearchUnifiedCommunications

• ### Microsoft's Nuance buy enriches call center, security products

Analysts expect Microsoft to integrate Nuance voice technology with a wide range of Microsoft products, including Teams and ...

• ### Microsoft update of Teams Rooms for Android falls short

Microsoft has yet to add to Teams Rooms on Android critical features available on the Windows version. Missing features include ...

• ### 5 steps to managing team collaboration apps

Team collaboration apps offer measurable productivity and cost benefits. Follow these five steps to address technical, security ...

## SearchMobileComputing

• ### How to deploy configuration profiles on iOS 14 and later

While mobile IT admins can deploy iOS configuration profiles manually or ask users to handle that task, they should learn how to ...

• ### Chip shortage leads to higher prices, wait times for PCs

A new Gartner report shows that PC shipments have increased, despite a semiconductor shortage caused by high demand, ...

• ### Chip shortage driving up PC prices, wait times

Businesses pay more for PCs and find it difficult to replace aging ones as the ongoing chip shortage leaves computer makers ...

## SearchDataCenter

• ### Programmable processor technology for next-gen data centers

The right processing technology can benefit your data center. Learn about advancements in CPU technologies, recent vendor ...

• ### Data processing units accelerate infrastructure performance

DPUs often run on networking packets to move information in the data center, instead of supporting processing workflows. Get an ...

• ### New Intel Ice Lake processors boost performance, security

Intel launches third-generation Xeon Scalable processors that bolster security, accelerate common data center workloads by 46% on...

## SearchITChannel

• ### Cloud consulting services attract investor dollars

A spate of deals involving Ensono, Ahead, Upstack and Syntax reflects growing confidence in cloud consulting firms; other IT ...

• ### IT industry's lack of diversity remains key issue in 2021

The first quarter of 2021 saw almost no changes in the composition of IT leadership teams. Here's how channel partners can change...

• ### How MSPs can build a post-merger integration team

Combining two companies is a complex undertaking, spanning employees, operations and line-of-business applications. An ...

Close