Tags: Linksys,

Tags: Nagios, Network monitor, open source,

Tags: SolarWinds, WOL,

Internet Protocol version 6, known as IPv6, is an upgrade to the world's most common network addressing scheme, Internet Protocol version 4 (IPv4). The purpose of this post is to provide you with some background information on IPv6 and some simple things that you can do to get acquainted with it.

Tags: IPv6,

Having introduced Iperf and Jperf, as well as covering details on TCP throughput tests by adjusting Window Size values, it's time to complete this series with comments on adjusting MSS and Buffer Length values. I'm also going to touch on using the results of Jperf testing to make changes to a PC to improve network performance.

Tags: Iperf, Jperf,

Free and openly available, Iperf is a command line tool useful for measuring network performance. In my last post, I introduced some basic command line instructions to run Iperf between two endpoints and showed how the tool can be used to generate and measure both TCP and UDP performance. This time, I'll discuss Iperf's graphical cousin: Jperf.

Tags: Iperf, Jperf,

One of the cool things about networks is there are many free tools to work with if you know where to look and how to use them. I've looked at a couple free network tools on this blog so far, including Wireshark and NetMeter. This time, I'm going to take a look at another network tool known as Iperf, a network performance tool used for measuring the bandwidth and the performance of TCP and UDP data flows between two endpoints.

Tags: Iperf,

With all the component and configuration options for constructing and managing a small network, it is important to numerically evaluate network performance. Performance measurements provide facts and statistics about the amount of data on your network and identify opportunities for improvement. Without measuring performance, the only indications of functionality are simple up and down states, as well as subjective statements based on user experience.

To manage any network over a period of time, it is useful to measure normal activity, as well as high and low traffic activity. Good network management involves metric based information on the volumes of traffic and various component performance levels. This is often referred to as "baselining" your network and establishing network benchmarks.

Tags: NetMeter, Tools,

I've covered some of the basic elements of Multicasting, such as IGMP and the Layer 2 switching components in my previous posts (Part 2). This article will go into the technology behind Multicasts at Layer 3 and some of the issues limiting wider use of Multicast technology.

As you recall in my first post, I observed that Yahoo's transmissions of live NHL games would seem to be good candidates for Multicast, yet were being sent as unicast. Then I covered the simple issue of enabling Multicast within a local area network. Coming full circle, here we are diving into Multicast technology to understand why it isn't more widespread.

Tags: Blogs, Multicast,

In my last post, I discussed multicasts and some of the basic concepts. This time, I'm going to discuss technologies used by switches and routers to enable and configure multicasts. Specifically, I'm going to dive into addressing and IGMP. Understanding the details behind multicasts helps understand configuring multicasts as well as the issues limiting the use of multicasts on the web.

Tags: Blogs, Multicast,