It is not possible to give a one sentence answer to this great question. But I will answer it and provide a great video to watch that explain the implications of it – take a deep breath: In a nut shell, Software Defined Networking, or SDN, is a network manager defined and network manager controlled […]
What is Software Defined Networking? Read More »
Great questions! I think the best way to answer the question is to describe what each one is. I will start with Cisco ONE. Cisco ONE ONE stands for “Open Network Environment”. The idea is to allow programmability of the network and the network elements. This allows for consistency across both physical and virtual network
What is Cisco ONE and Cisco OnePK? Read More »
On April 18th 2018 Microsoft published (for the first time ever?) a complete command line reference. It is a 248 page PDF document. You can download it here. Here is my quick list of commands you can run from the Windows Command Line: (START> RUN> CMD) ADDUSERS Add or list users to/from a CSV file
What commands can you run from the Windows Start> Run> CMD? Read More »
This is a very common question. First, we must warn of the difference between theoretical speed and actual speed. You have probably heard this a million times, but there are so many factors that can affect wireless throughput. I won’t go into them here so I can stay on the subject. 802.11n is a three-spatial-stream
What are the wireless speeds for 802.11n 802.11ac and 802.11ad? Read More »
Check out these great references as well: Our custom profiles repository for Wireshark Our Udemy course on Wireshark Our Udemy course on Wireless Packet capture One of the cool things you can do with Wireshark is capture packets on remote servers or systems. This is particularly handy for those who run Data Centers
Using Wireshark to Capture on Remote Servers or Systems Read More »
Check out these great references as well: Our custom profiles repository for Wireshark Our Udemy course on Wireshark Our Udemy course on Wireless Packet capture Wireshark is a great graphical tool for performing packet analysis and we all agree that the GUI is wonderful, especially the new 2.x interface and later. But, what if you
How to use tshark – a starting point Read More »
**Note: all links no longer work and have been removed (sorry) On Friday, by a vote of 240-179 (click here to see how the individual representatives voted), the US House of Representatives passed H.J. Res. 37, which will stop the open Internet rules adopted by the FCC in December 2010. By using the Congressional Review
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One of the most popular routers on the planet is the Linksys WRT54G series. Â We are also happy owners of this platform (version 2 to be exact). Â Unfortunately, Cisco (as well as many other router vendors and their platforms) decided to stop offering support for this router through software upgrades. Â This purposes certain challenges as
Upgrade Your Router/Gateway – Even If The Manufacturer Won’t Read More »
As the terms cloud computing, cloud storage and cloud networking have become second nature to most IT people these days, not everyone understands one of the key issues for anything cloud is the Real Time performance and design of cloud infrastructure. I have been preaching the real time nature of everything we do in networking
The Real Time Cloud Read More »
What is Netsh? Netsh is a Microsoft Windows command-line shell/scripting utility originally introduced in Windows 2000 that allows you to, either locally or remotely, display or modify the network configuration of a computer that is currently running. Netsh also provides a scripting feature that allows you to run a group of commands in batch mode
The Netsh Shell/Scripting Tool in Windows Read More »
If you are a packet capture specialist, you have probably played with TCPDUMP for troubleshooting networks. We have created a TCPDUMP cheat sheet to help. You can download it here! Let us know if we need to add or change anything by adding your comment below! Enjoy. I hope you find this article and its
The CellStream TCPDUMP Cheat Sheet now available Read More »
If you are a packet capture specialist or network troubleshooter, you have probably learned that ICMP is very important to the operation of any TCP/IP network. We have created an ICMP cheat sheet to help. You can download it here! I hope you find this article and its content helpful. Comments are welcomed below. If
The CellStream ICMP Cheat Sheet Read More »
Check out our IPv4 Cheat Sheet! All the important IPv4 References in one place. This is vital to anyone learning IPv4. You can see our IPv4 Subnetting video here: https://youtu.be/VQ4-rVY8iEM You can view our other videos on our YouTube channel: https://www.youtube.com/channel/UCO2p6v9ooIR0OHnCI2oTGng We have created an IPv4 cheat sheet to help. You can download it here! I hope
The CellStream IPv4 Cheat Sheet Read More »
Check out our IPv6 Cheat Sheet! All the important IPv6 References in one place. This is vital to anyone learning IPv6. We have created an IPv6 cheat sheet to help. You can download it here! I hope you find this article and its content helpful. Comments are welcomed below. If you would like to see
The CellStream IPv6 Cheat Sheet Read More »
Hello!  We have created an IPv6 OS Command cheat sheet to help. You can download it here! IPv6 has been in an ongoing growth curve as it transforms the Internet. There is a lot to learn, and hopefully this cheat sheet will serve as a great reference. As you learn IPv6 you will need to study
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