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179 Results Found

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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”.

From Foundation to Finish Line: Get Your Head in the Microsoft Azure Cloud

Webinar – Recorded | Dec. 08, 2020

Join this exciting journey through the Microsoft cloud. We will discuss how companies have implemented Azure and other Microsoft cloud services and solutions. We will also address hesitations companies may have as they consider cloud technologies. In addition, we will explore practical tips about how to begin or continue your journey as you implement cloud solutions.

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>

Cisco LAN Switching Fundamentals

Webinar – Recorded | Aug. 20, 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>

The 10 Most Important IT Skills for 2020

Article | Aug. 17, 2020

As IT departments struggle with skills gaps and businesses attempt to recovery economically from the COVID-19 pandemic, these 10 IT skills are essential to drive success. Job roles in these areas pay well, but decision-makers are struggling to find qualified candidates. If you’re looking to make an IT skills investment or start a new career path this year, these are the areas to consider.

Cisco LAN Switching Fundamentals

Webinar – Recorded | May 19, 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>

5 Most Popular IT Certifications for 2020

Article | May 11, 2020

While cybersecurity remains the most popular certification category in our IT Skills and Salary Report, foundational-level certifications highlight our list of the most popular IT certifications of 2020.