What are the OSPF router rules????

Answer Posted / jitendera sinha

on the behalf of question asked by shain on my answer

if your network has fewer than 50 to 100 routers, you may
be able to just have one big (happy?) area 0.

When you try a real OSPF design, you'll find that OSPF area
0 tends to grow on you. I've been calling this the "vacuum"
effect: OSPF area 0 almost seems to pull links into it,
until you find your design is all one big area 0, and you
have to start over. My advice is to keep OSPF area 0 small.
If area 0 is small, it's easy to keep it robust. I prefer
to put the links connecting to non-backbone areas into
those areas, and keep them out of area 0

jitendera kumar sinha
network and security admnistrator

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