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Category Archives for "Networking"

IDG Contributor Network: When networks hit the wall

Whether you are streaming the latest boxing match or watching the most recent Game of Thrones episode, during its first run, the network is going to play a major role in determining your quality of experience like never before. There is unprecedented demand for content, and with the proliferation of smart devices capable of displaying video, every pair of eyeballs on the internet is a potential consumer.The widespread availability of video combined with streaming technology means our viewing expectations are now much more demanding on the infrastructure. We expect content to be there, wherever and whenever we want it. We want to watch it, pause it, play it in slow motion, watch it again, analyze it, save it for later, share it with friends.  We want to watch it at home, on the train or at work – because there’s always the underlying risk of spoilers, or missing out on the next-day office discussion should we be unable to view it.To read this article in full or to leave a comment, please click here

Maneuvering around run levels on Linux

On Linux systems, run levels are operational levels that describe the state of the system with respect to what services are available. One run level is restrictive and only used for maintenance; network connections will not be operational, but admins can log in through a console connection. Others allow anyone to log in and work, but maybe with some differences in the available services. This post examines how run levels are configured and how you can change the run level interactively or modify what services are available.The default run state on Linux systems -- the one that will be used when the system starts up (unless instructed otherwise) -- is usually configured in the /etc/inittab file which generally looks something like this:To read this article in full or to leave a comment, please click here

Review: 5 top Linux distros for enterprise servers

Linux distros are plentiful, and choosing the right server product can be a daunting task. Are you looking for a supported product, or can you go with a free version? Need Cloud support or virtualization? We’ll try to provide some answers.Although many Linux distros can quite capably be configured to run as a server, for this review we focused solely on dedicated server products, named and supported as such.+MORE ON NETWORK WORLD: What is Linux? A powerful component of modern data centers+We tested Ubuntu LTS (long-term support) 16.04.02, Red Hat Enterprise Linux Enterprise Server 7.4, SUSE Linux Enterprise Server 12 SP2, Fedora Server 26 and Oracle Linux 73. All five products tested are designed and supported as server operating systems, and each product boasts a large user base. However, each of these products appeals to a different target audience, as noted in the narrative and summary chart.To read this article in full or to leave a comment, please click here

IoT gives Microsoft opportunity for cloud leadership

Next month, Microsoft will hold its Ignite and Envision conferences in Orlando, Florida. Ignite is aimed at enterprise IT professionals, and Envision is aimed at IT decision makers. Combining Ignite and Envision in the same venue increases the overall enterprise IT audience, so expect several enterprise-related announcements. The action will be in the cloud, as Microsoft has become cloud obsessed. Last month’s quarterly results put Microsoft as the second largest cloud company behind Amazon Web Services (AWS) — and growing faster.To read this article in full or to leave a comment, please click here

Questions and Answers about Cisco 3850 Switches

Today I am going to talk about the queries about the Cisco 3850 Switch as it is one of the most used switch at the access layer in the large enterprise network and at core layer in some of the small and the mod sized enterprise networks. 

I will address some of the concerns which some of you have for using the Cisco 3850 switch in your network. Below are some of the questions and the answer to that questions regarding the Cisco 3850 switches.

Fig 1.1- Cisco 3850 Switch


Q: What are the supporting uplink modules in the Cisco 3850 Switches ?
A: There are some of the supported uplink network modules in Cisco 3850 Switches and these are 

  • 4x 1G Network Module 
  • 2 x 1/10 G Network Module
  • 4 x 1/10 G Network Module and can be used for 48 port RJ models
  • 8 x 10 G Network Module
  • 2 x 40 G Network Module
Q: Does the Cisco Catalyst 3850 10G SFP+ 48-port switch support uplink modules ?
A: No. It has 4 fixed 40G QSFP ports for uplinks. 

Q: Are the uplinks between the Cisco Catalyst 3850 and the 3750-X interchangeable?
A: No Because they are not compatible Continue reading
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