Measuring Network Performance – Jperf and TCP, Part 2
In the last part of our series, we'll use Jperf results to make changes to a PC to improve network performance.
LAN & WAN How To
Measuring Network Performance – Jperf
Meet Iperf's graphical cousin: Jperf.
Measuring Network Performance – Iperf
Updated - Iperf is a network performance tool used for measuring the bandwidth and the performance of TCP and UDP data flows between two endpoints.
Measuring Network Performance – NetMeter
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.
Packet Capture to the Rescue
In my last two posts on this subject, I've covered some of the basics and tools used to perform packet captures, highlighting the well known software from Wireshark. In this installment, I'm going to show how I used Wireshark packet captures to solve a real network problem.
Packet Captures and Network Devices
Using packet papture software like Wireshark is a useful troubleshooting technique that can be used to examine packets and gather details to help find the root of a problem. In my previous post, I talked a little bit about how to use Wireshark and walked through some steps to run a simple packet capture from a PC. This time, I'm going to go a bit deeper into the how to for doing packet captures.
Packet Captures, Plain and Simple
One of the features I've seen in newer small network routers is the inclusion of a packet sniffer/capture/trace tool within the diagnostic menus of the device. Routers I've recently tested with this functionality include the SonicWall TZ190W, D-Link DFLCPG310, and Netgear's newly released FVX538 and FVS336G.
In each case, these devices have the ability to capture packets on a specific WAN port and/or on the LAN interface. Some of these routers have more sophisticated filtering capabilities than the other, but they all seem to have the same basic functionality of capturing packets.
VLAN How To: Segmenting a small LAN
VLANs aren't just for large networks. Doug Reid shows you how to use a smart switch and VLANs to divide a small LAN into secure, separate segments.
How To: Wake on LAN / Wake on WAN
Waking your PC up over the Internet can come in handy. Doug Reid shows you how.
How We Test Hardware Routers 2006
Our latest update describing how we put routers to the test.
LAN Party How To – Part 3: LAN Management and Troubleshooting
Chris Dickens' series has so far shown you how to organize a smooth-running LAN party and get it powered properly. This time he offers tips on choosing networking gear, installing it and handling the problems that come with the territory.
LAN Party How To – Part 2: Building the LAN
You can't have a LAN Party without a LAN and you shouldn't set up your party's LAN before reading the latest installment of our How To. Chris Dickens returns to step you through what it takes to set up a fast, robust LAN that can handle plenty of fraggin'.