VLANS save money...
Thanks for the summary - will re-read at leisure.
I fin it surprising how many network admins still can't get their heads around VLANs - even some of our "partner" organisations clamp up in fear when they come on our site and hear we use VLANs for segregation on the structure.
They really can be fantastic tools to manage data flow and traffic volumes, and managing which VLANs can access which trunk can be a useful way of ensuring that traffic stays where it's wanted, freeing backbone bandwidth in the process.
One "gotcha" that I've fallen foul of (well two if you count not checking native VLANs when routing between networks - wish I'd read that YESTERDAY!) is that there are differences in implementation and terminology between CISCO implementation and almost everyone else (I cut my teeth on Nortel - dead easy by comparison).
Biting the hand that feeds IT
