Topology has been reset to VTP Version 2, Domain CCNP, and above Topology configured. Note that the two VTP Client switches both have interfaces in a common VLAN, interfaces in separate VLANs, and the VTP Server only has Trunk interfaces which are considered to be in "all VLANs" by default. The Fundamentals of VTP … Continue reading VTP – Pruning VLAN explanation and lab to demonstrate, and example of trick question for Exam day (bottom of post)!
I will only be using the 3560 stand alone for IOS difference comparisons, and will only be using the 3750's in a two layer Core / Access switch model to demonstrate the differences between the 3 different VTP versions. This will be a long, lab heavy post to demonstrate behaviors, so prepare yourself for a … Continue reading VTP – Versions / Passwords / Extended VLANs DEEP DIVE – Explained and labbed exhaustively so prepare thyself!
Above will be the new Topology going forward, however I wanted take a quick look at deleting the VLAN Database to "wipe the slate clean" on the switch lab, and how exactly to delete it! What does not work to delete the VLAN Database, and what does I did a "wr er" / … Continue reading VLAN Database – What / where it is, and how to reset it if needed!
I wasn't sure what to put as a graphic here, so I thought a glimpse into troubleshooting hell would suffice, I dig the whole "chaos" theme of a million cables between devices 🙂 First I want to start with a couple things I previously had missed in prior articles: If you want to see only … Continue reading Dynamic VLANs, explained but no configuration, as config is not needed for SWITCH, the ups and down of using it!
That's right, we've gotten back to my crappy Paint topologies, as we all have come to know and love them. So given I don't have laptops around that I can piece into this home lab, I will be using a couple of my NBMA routers (2600XM series) as hosts C and D, while hosts A … Continue reading Configuring two broadcast domains, but creating one big problem, and some real world info!
This is the most basic VLAN graphic you could possibly find, it looks almost from the old CCNA v1 exam, however it perfectly illustrates the functions of VLANs! Just as ports on a switch break up "collision domains," VLANs break up "broadcast domains," which is not only required for traffic separation but also broadcast traffic … Continue reading VLANS: Static VLAN need to knows, configuration, verification, and troubleshooting on the CLI!