Stepping Up My Dongle Foo

Last night I was presenting at a local ISSA meeting. When I arrived, my POS (Not Point of Sale) USB C to HDMI Dongle stopped working. I was embarassed that my $5,000.00 laptop could not connect to an HDMI display natively. Thankfully another vendor was also preenting and was gracious enough to share his. I...

VI Cheat Sheet

Here is a simple VI cheat sheet. I like ‘vi’ because it is pretty much included by default in everything. Just like in my Cisco life, I have always used the CLI and not GUIs because sometimes, those GUIs don’t work or they are not present. This way you can always be ready for anything that comes your way....

Reformatting MAC addresses in Excel

Today, a customer asked me to add his 150 phone’s MAC address to their MAB Bypass database they use for 802.1x. The customer game me the output from an Excel spreadsheet that contained the MAC addresses but without the “-“ in it. I needed to get it in the 01-11-11-11-10-00 format. Here is the Excel formula:...

Upgrading Observium Community Edition

Observium is an amazing quasi-opensource solution used to monitor up/down and performance of your networks. It allows you to monitor things such as interface usage, CPU, memory, disk, temperature, BGP, SLA etc. To upgrade your existing Obervium installation, you will need to Connect to your Observium server...