• Telecommunications Consulting

    Telecommunications Consulting

    Consulting Services from Network Design to Project Management Read More
  • Internetworking Training Experts

    Internetworking Training Experts

    Click on Training and then Courses. Read More
  • Wireshark Experts

    Wireshark Experts

    Packet analysis expertise is critical in today's networks, and being able to use the best packet analyzer application is a skill we can help you and your team attain. Read More
  • Are you a Network Scientist?

    Are you a Network Scientist?

    Online Learning, Instructor Led in person or Web-based delivery. Check out our online school. Read More
  • Online Certification Training

    Online Certification Training

    Find out about our Network Self Certification Program for Rural Service Providers here! Read More
  • IPv6 Experts

    IPv6 Experts

    Along with other Internet regions, ARIN is out of IPv4 Addresses. Are you IPv6 fluent? Are you IPv6 ready? Read More
  • Enabling the IoT with Wireless

    Enabling the IoT with Wireless

    Without wireless, we cannot have the Internet of Things. Read More
  • MPLS Book for iPad and iPhone

    MPLS Book for iPad and iPhone

    Get Mr. Walding's book here! Read More
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Welcome to CellStream, Inc. - Telecom Consulting and Training!

Welcome to our home on the Internet, where we can not only share information, but also interact with each other.

If you are a visitor to the site, there are a number of things to view:

Registered CellStream folks and our clients will log in using their private credentials to access projects, calendars and discussions.

Thanks for visiting! We always welcome comments and suggestions.

The CellStream Team

Our Latest Content

  • Want to understand Net Neutrality? Like burgers? This will explain...

  • What is the 'area range' command in OSPF?

    This is commonly asked question from our routing courses and routing discussions in other courses.  Let's explain this command in

    Read More
  • What is the “network” Command in OSPF and BGP?

    In a recent course on IPv6, one of my students asked what the “network” command did as we were beginning

    Read More
  • Deleting Remembered Wi-Fi Networks in Windows and MAC OSx

    If you attend our WLAN Operations course, one of the things we discuss is Active Scanning.  Your system uses your

    Read More
  • Complaint: Why Don't You Allow Employees to use Wireshark?

    Let me begin with a little background.  At CellStream, and the Online School of Network Sciences, we have taught hundreds

    Read More
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Our Most Popular Articles

  • What is the 'arp' command, and how can I use it?

    ARP stands for Address Resolution Protocol.  This protocol is used by network nodes to match IP addresses to MAC addresses. 

    Read More
  • IPv6 Windows Command Line Examples

    Here are some great Windows command line entries you can make to examine and configure IPv6 (assuming your version of

    Read More
  • How do I reset my "Default" profile in Wireshark?

    This is a commonly asked question that usually results from users learning the can have different profiles after they have

    Read More
  • Neighbor Discovery (ND) Table in IPv6 Windows, Linux and MAC Machines

    A great question I was asked in class was: "If Neighbor Discovery processes have replaced ARP in ICMPv6, how do

    Read More
  • A List of Network Monitoring Tools for Network and System Administrators

    Monitoring, analyzing, and diagraming a network can often be a huge problem for Network and System Administrators.  They are often

    Read More
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