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OSPF best practice for COST

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Last Modified: 2017-08-30
If hardware is all the same, what's best practice for OSPF cost?


Left:
Egress and ingress are opposite of one another.  (Egress/Ingress are not on the same connection)  I like this setup, but i'm not sure if its best practice compared to the far right picture.  I prefer this idea because inflow/outflow aren't shared on a link, but is this enough justification to be BP?

Middle:
Each core will be responsible for their "side". (Left core/distro vs right core/distro)  Not sure if this is correct...i'm just guessing

Right:
Primary/Secondary setup.  (Left core takes care of everything, Right Core is backup)
OSPF-FLOW.png
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