Multiple Spanning Tree – MST

The next section of the CCIE R&S v5 Blueprint that I was running through was "1.1.f (i) PVST+/RPVST+/MST", specifically MST or Multiple Spanning Tree. Pretty straight forward process around this one and here is the summary...

Cisco 3850 Wireless Controller – FAQ

There was a recent project I was working on where I was going to be using a Cisco 3850 switch as a wireless controller, which is a fully supported feature that is build into...

Can the Cisco Catalyst 9600 Really Replace the Catalyst 6000 Series?

If you have worked in networking and with Cisco equipment, you have probably heard of the Cisco 6500 Series switches. Myself, I have worked with them pretty regularly as well as other Catalyst 6000...

LACP Port-Channel Member Ports Suspended – %EC-5-L3DONTBNDL2

Recently ran into this issue where a switch rebooted and when it finished reloading, one of the member ports would not come online. The port was stuck in a suspended state. When this occurred,...

Cisco 3850 – High CPU Usage (fed and iosd processes)

Recently, out of nowhere, I had a 3850 stack that spiked in terms of CPU usage. This particular stack had no recent changes in configuration and had been  up and running for around 20...

Guide to DHCP Snooping

DHCP snooping is a security feature that you will surely run into in while studying for your Cisco exams or while working in an enterprise environment perhaps. It first off helps ensure that you...