What happens Same IP Range different subnet mask
I had this question posed to me the other day and it is one of those curiosity questions that you may have asked before or perhaps had a situation that…
Month: September 2016
VIRL vs GNS3 vs Packet Tracer which one
Network simulators are a great resources for mocking up certain scenarios, learning, certifications, and plain old “what will happen if I do this in my network” testing. Â There are are…
Nakivo 6.1 Backup and Restore Active Directory
In enterprise environments today, Microsoft’s Active Directory (AD or ADDS) is by far the most widely used authentication engine that provides identity management as well as access to resources and…
ESXTOP troubleshoot VM network connectivity
ESXTOP is one of the best all around troubleshooting tools in the toolbox of a VMware administrator and it is a built in commandline tool available as soon as you…
Troubleshooting VMware Workstation Network connectivity
Typically, I use VMware Workstation every day running work VMs and performing other testing. Â I also troubleshoot VMware Workstation for other users as well. Â From time to time, I have…
Reset unresponsive VM with Powershell PowerCLI
I had a recent use case to be able to check the reachability of a certain VM which had shown itself to be problematic. Â If the VM wasn’t responsive or…
SQL Cluster computer account could not be configured
In working on an older Microsoft SQL Cluster server configuration recently, I ran into an issue with a lab copy of the SQL Cluster not bringing the SQL resources online…
Change Default Gateway with Powershell
One of the best ways to automate or check network settings with modern Windows OS’es is to use Powershell. Recently, I had a really unique use case where the need arose…
Troubleshooting NSX VXLAN jumbo frames in nested lab
In working recently in a nested VMware environment running three clusters and NSX, I ran into a jumbo frames issue with VXLAN connectivity across the clusters. Â I was simulating different…
Configure Dell Nseries switch stack
A quick little how to post on creating a stack between Dell Nseries switches. Â For the purposes of this post, the stack was created using (2) Dell Nseries 4032F 10G…