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!
Read the article over at Medium over here.
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