This is the blog of Ronald Bartels that wanders on and off the subject of problem management (that is how it started), but it is best described by Ray who says this is Daddy's thoughts! Like the best music is from the Eighties and a wee dram helps in solving most inconveniences.
The maligning of layer 2 — a bridge too far
The significant majority of Cisco trained networking geeks have a mental
block in understanding layer 2. They drink the koolaid that all
solutions have to be exclusively layer 3 with layer 2 being bypassed, or
put alternatively, every ethernet port must be a router port! This bias
emanates from Cisco being bad at layer 2 and having to on-board
switching by acquisition, starting with, if memory serves me right, with
Kalpana! Basically, they don’t get it. Ironically, Cisco does ship
decent switches and configured correctly they work like a charm. The
root cause of problems is human bias and interference. Probably the
underlying cause for the significant majority of ISP outages!