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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.
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.
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.
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”.
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>
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>
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.
System Administrators, or sysadmins, are the “installation specialists”, “configuration specialists” and “fixers” in IT. To get a better understanding of the type of IT training that sysadmins require, we compiled a list of the 10 most-attended Global Knowledge courses by sysadmins.
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>
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.