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How to Secure a Campus Network with Cisco ISE

Webinar – Recorded | April 29, 2021

This webinar will focus on addressing the issues of an unsecure campus network and how to address the insecurity with ISE. We then will look at how Cisco ISE can add security to devices beyond initial connectivity. View the slide deck>>

How to Implement 802.1X with Cisco ISE

Webinar – Recorded | March 30, 2021

This webinar focuses on addressing the issues of an unsecure campus network and how to address the insecurity with 802.1X. We then will look at how Cisco ISE can centralize campus access with 802.1X. View the slide deck>>

How Data is Delivered

Article | March 18, 2021

Every second of every day, data is being sent and received. Billions of data packets are processed by your company’s network every day. In fact, you received dozens of packets just to read this article, but the vast majority of us have no idea how this works. People have no clue as to what goes on behind the scenes to ensure data actually gets to the right device.

Fundamentals of Red Hat Enterprise Linux

Webinar – Recorded | March 09, 2021

For organizations getting started with RHEL, Red Hat Training has developed a series of courses to develop the skills needed for basic administration and configuration of Red Hat Enterprise Linux. These courses introduce key command line concepts and enterprise-level tools, laying the foundation for the rapid deployment of Red Hat Enterprise Linux. The curriculum also introduces the basic administration skills needed for resolving configuration issues and integrating Red Hat Enterprise Linux systems with other existing environments. View the slide deck>>

Layer 2 Device Overview

Video | Feb. 24, 2021

An quick fundamental overview of layer two devices.   To learn more about this and similar topics, enroll in our exclusive Understanding Networking Fundamentals course.    

How to Use MPLS Ping and Traceroute

Article | Dec. 17, 2020

With Multiprotocol Label Switching (MPLS) as popular as it is in the provider space and private MPLS clouds for larger enterprise, we needed some tools to help troubleshoot and maintain these networks. With the providers in mind, the normal ping or traceroute may not be enough.

What’s the Difference Between Hubs, Switches & Bridges?

Article | Dec. 17, 2020

The key difference between hubs, switches and bridges is that hubs operate at Layer 1 of the OSI model, while bridges and switches work with MAC addresses at Layer 2 of the OSI model.

Can One VLAN Reach Another Without a Router or OSI Layer 3 Device?

Article | Dec. 15, 2020

Early one morning, an engineer end user discovered that the Engineer servers were unreachable, and he didn’t know if he could reach the Internet. The administrator investigated the user’s PC with the IPCONFIG /ALL command and verified that the PC was a DHCP client, but it had received an address from the Accounting DHCP server, not the Engineering DHCP server.

FLOGI, PLOGI, and PRLI

Article | Dec. 15, 2020

When you connect your server or storage, it will send a Fabric login (FLOGI) request. This FLOGI request serves two purposes: Fibre Channel ID is the WWPN connection to this port from the FLOGI server Exchange buffer credits with the switch To better understand the first function, it is exactly the same if I rewrite it as, “request an IP address for a MAC address from the DHCP server”.

Cisco LAN Switching Fundamentals

Webinar – Recorded | Nov. 05, 2020

Network switching skills are fundamental to administering and maintaining computer networking. This webinar reviews fundamental networking skills from a Cisco perspective. Technical professionals looking to take the next step into Cisco specific networking technologies will benefit from this information. View the slide deck>