Search Results for Mathis Equation

Good network engineers know about TCP performance over Long, Fat Networks (LFNs – see RFC1323) and how to use bandwidth, delay, and window size to calculate the maximum throughput of [...]

Not all network engineers understand the impact of interface errors on TCP performance. Interface errors can cause a BIG impact, although it may not be intuitive at first glance. We recently pointed out some interfaces with extremely high errors to a customer. We mentioned that the links with the highest…

've always looked at percentage of interface errors as an indicator of which interfaces I should examine. What did I know? Not enough, as it turns out. I've been working with customers on application performance, as you might have guessed from the series of recent blogs on the topic of…

I’ve been doing a number of network assessments recently and one of the factors that I use to determine network health is the number of TCP retransmissions that occur. I [...]

This is the third of a series of posts on the network management architecture used by NetCraftsmenTCP Performance and the Mathis Equation.) If packet loss is detected, then check the [...]

In A Network Management Architecture, Part 1, I discussed a Network Management Architecture, composed of seven elements, shown in the figure below. I described the Event and NCCM elements in [...]

Several of us at TCP Performance and the Mathis Equation for calculating TCP performance due to packet loss.) UDP applications wouldn’t have any feedback and would continue to monopolize the [...]

Here is a recap of articles I posted in August to my blog at Netcordia: “Quick Network Redundancy Test” describes why and how you should test the network redundancy that [...]

Terry attended Interop 2015 to do two presentations. These are a few thoughts from the show.

I’ve started blogging for Opnet at apmmatters.com, and the first posts are describing what happens to applications when faced with any of several types of network problems. I’ve previously written [...]