Mid-2018 me and my friend (back then dearest colleague Andres Villalobos) ran into an issue with Linux teamd drivers and Cisco Nexus 9000 switches when using LACP vPC (virtual port…
Reverse DNS PTR records and web performance issues
It’s no secret that at the slightest delay in web browsing a user may experience (regardless if it’s Netflix or your Corporate Website), the Service Desk starts getting those “is…
Leverage Windows CMD executables from Linux using WSL version 1
Quick tip for Windows users who are still trapped with WSL version 1 due to very specific reasons, you can use the same CMD executables straight from your Linux VM,…
VMware workstation nested virtualization and WSL2 disaster
Got caught into the WSL2 hype and ran into the surprise of errors such as “Virtualized Intel VT-x/EPT is not supported on this platform”? me too (…) welcome to VMware’s…
The dangers of a “Book Manager” in IT
Have you ever come across managers bringing up phrases such as “and now we will share a personal fact about ourselves with our colleagues…” or “I don’t ask you more…
Changing a Nexus 9K switch from ACI to NX-OS mode without an APIC controller
Cisco ACI -just like any other beta platform- had an infancy period, which for the Nexus 9K line meant to have a series of licensing schemas, one of those being…
How to make Putty the default telnet application in Windows 10
Trusty yet insecure, it’s the 21st century and long gone are the days of telnet but, is there any need to keep using telnet to access your network devices nowadays?…
How to upgrade Cisco’s UCS CIMC firmware
The Cisco Integrated Management Controller is the out-of-band hardware controller included with the Cisco UCS servers and if you have read my previous blog post about the CIMC you already assigned it with…
How to upgrade Cisco’s WLC AireOS software
Quick n’ easy and just to complement my last post on updating a WLC’s FUS, here’s a guide on how to upgrade Cisco’s WLC AireOS software. Do we still call…
How and why to apply Cisco’s WLC Field Software Upgrade (FUS)
Boring weekend and my -you gotta do something old man- feeling drag me to dust off an old Cisco WLC 2504 I bought years back on eBay. As expected it…