Post Views: 1,520 This is a great question, and there is a building pile of learning SDN courses out there. Perhaps the most technical one we found, we loved, and thanks to the great folks at Georgia Tech, the lectures were placed in the public domain. We assembled those video lectures and added our own
Where can I learn SDN? Read More »
Post Views: 2,805 Hi Everyone! If you support MPLS operations in your network, then you need to have an MPLS profile for Wireshark. In this case, we have an LDP profile for you to use. This is great for fundamental MPLS operations involving LDP. As with any Profile for Wireshark, to add this profile, within
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Post Views: 1,593 What I have always loved about technology is that what we take as given is not necessarily going to be a given in 3 or 6 or 12 months time. A great example of this is the constant evolution of Data Center technology. The most incredible growth and change has happened in
Evolution of Data Center Technology Read More »
Post Views: 4,143 Welcome to our Cisco IOS Classic Command Cheat Sheet! Cisco switches and routers use the Internetwork Operating System (IOS), which configures and controls the device’s performance and behavior. Cisco’s IOS defines an interface called the Command Line Interface (CLI), which enables administrators to enter commands into a terminal emulation program. The CLI
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Post Views: 1,795 We are always adding to, and updating the technical “how to’s” contained here. When it comes to configuring a new Cisco router, much of the configuration depends on what type of router it is as well as the purpose it will serve. However, there are certain things you should configure on every
Top 10 Cisco IOS Classic Commands Read More »
Post Views: 1,542 Some of you know, that to master networking technologies you have to have a complete grasp of the fundamentals. Furthermore, like any technology, if you don’t review these fundamentals often, they can become a bit hazy in our memory. The question, then, is how can I come up to speed on the
Learning the Network Science Fundamentals Read More »
Post Views: 4,712 We get this question often: I am new to Telecom, or I just started at a service provider, and I need to learn Telecom basics – how can I come up to speed? This is a GREAT question – and the truth is: you need to get up to speed. The more
New to Telecom/Datacom. How can I come up to speed? Read More »
Post Views: 1,815 Great question! One I have received many queries on lately. Let’s get some terms out of the way first: ACI = This stands for Cisco Application Centric Infrastructure, so it is not one thing, but rather a collection of things. From the Cisco ACI web page: Cisco ACI consists of: The new Cisco
How does Cisco APIC and ACI fit in the SDN world? Read More »
Post Views: 2,920 Many of our MPLS students and colleagues ask us about VRF Lite. The common question is “Can I use VRF Lite to simplify MPLS configuration?” The answer is, that VRF Lite actually has nothing to do with MPLS nor MPLS L3VPN per se. Let’s define what VRF Lite is. A VRF is
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Post Views: 1,728 By now you have all heard of the Internet of Things (IoT) or the Internet of Everything (IoE). This term is not really new and there is an interesting history to the concept. Different folks give varying definitions but they all share a common concept and that is that this wonderful connectivity
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Post Views: 1,925 We thought it would be useful to our networking colleagues to provide an overview of the OpenFlow protocol. Let’s begin with a broad definition of what OpenFlow is. OpenFlow is a communications protocol that uses network-centric, network-aware intelligence in it’s communication design. OpenFlow works on Software Defined Network (SDN) controllers
Post Views: 1,349 At CellStream, we made a nationwide tour over several years with our POTS to Pipes program. This program clearly defined what network operators (Telcos, especially the rural Telcos) needed to do to prepare themselves for the changes rapidly redefining their role in communications. POTS to Pipes 1 focused on the technical knowledge
Living out POTS to Pipes Read More »
Post Views: 1,903 Accessing the Internet is almost taken for granted today by most workers. They get very comfortable simply opening the lid to their laptop, turning on the wireless or connecting a cable and having access. For many of our clients, this notion of “open access” has been a continual challenge. On the one
Switch Port Security Usage in Cisco IOS Read More »
Post Views: 3,950 As most of us know, a key to managing the Internet is knowledge of TCP and UDP port numbers. Cisco IOS uses Access Control Lists for many purposes, but in this tip, we will focus on TCP and UDP port numbers. Port numbers are unique, well-known, registered or ephemeral numbers used by
UDP and TCP Port Number Usage in ACL’s in Cisco IOS Read More »
Post Views: 2,024 Network broadcasts can create a huge amount of traffic on your organization’s network. When one device sends out a single broadcast, that broadcast goes to all devices on the subnet or VLAN. How can you manage these broadcasts to make your network more efficient? One method is to use Cisco Catalyst broadcast
Storm Control for Switches in Cisco IOS Read More »
