I posted a blog recently which discussed protected ports. How Can I Protect My Ports? In that blog I mentioned that a more comprehensive solution (more expensive as well) would be to configure private vlans – as long as your switches support such a feature. In this blog I will cover the configuration steps required … Continue reading How to Configure Private-VLANs on Cisco Switches
While I have posted a couple of blogs regarding spanning-tree, the Layer 2 loop prevention mechanism that runs on Cisco switches, I wanted to post one with a few more switches and a bit more detail on the step-by-step process. Follow the steps as we proceed from a blank scenario to one in which all … Continue reading Spanning Tree – the Roots Go Deeper!
Clearing out a Cisco switch configuration is always a pain because VLANs are kept in a seperate file from the startup-config (NVRAM). There's two ways to clear a switch back to the factory defaults – the easy way and the REALLY easy way: The easy way – Switch# write erase Switch# delete flash:vlan.dat Switch# reload … Continue reading Completely Clearing a Cisco Switch…The Easy Way!