I was cleaning out some of my old networking textbooks when I came across one that had a reference to the 5-4-3 rule of networking. Basically it is
- 5 the number of network segments
- 4 the number of repeaters needed to join the segments into 1 collision domain
- 3 the number of active ( have transmitting) devices on them
It made me wonder,
does anyone still abide by this rule?
does this rule even still apply? (the fact the it talks about repeaters sort of dates it.)
does anyone have a network that they built using this rule?
I remember once when I was applying for a job way back when, someone asked a question regarding this and I was able to give the right answer, but the last time I was setting up one of our school networks the thought of this never even crossed my mind.
I think it's one of those good to know in theory for design purposes but is it really used much in practice.
Thanks
