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Top 5 Highest-Paying Cisco Certifications

Article | Jan. 09, 2024

Discover the top 5 highest-paying and popular Cisco certifications from the IT Skills and Salary Report. Learn how to get certified and unlock IT career opportunities.

Understanding Next Hop Resolution Protocol Commands

Article | Oct. 29, 2021

Next Hop Resolution Protocol enables businesses to have a way for next-hop servers and next-hop clients to communicate with each other directly, bypassing a central hub and preventing potential bottlenecks.

Policy-Based Routing: What Is It and How Is It Used?

Article | Oct. 22, 2021

Policy-based routing (PBR) provides network administrators with agility and flexibility to better manage traffic. With carefully architected policies, you can optimize how segments of your network process data, as well as how bandwidth is managed for business-critical applications.

2020 15 Top-Paying Certifications

Article | Aug. 16, 2021

Look back at the some of the highest paying IT certifications of 2020.

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.

18 IT and Business Certifications Worth Having

Article | Jan. 11, 2021

Here are 18 certification options, in no particular order, that are worth your effort based on site searches, feedback from subject matter experts and data in the Global Knowledge 2019 IT Skills and Salary Report.

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”.