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Stub NetworkA "Stub network" is a slightly casual term describing a computer network, or part of an internetwork, that meets one or more of the following criteria (paraphrased from various sources): - A single OSPF area with no external routes (though it may have interarea and/or intra-area routes).
- A single LAN which never carries packets between two remote hosts; all traffic is to and/or from local hosts (it may or may not be multiply-connected; but multiple routers on a stub network don't route to one another, they will only route packets into the LAN if it's destined for the LAN, and out from the LAN if it originated on the LAN).
- A network that is only accessible by one path.
Note that these are all similar ideas, but distinctly not the same. A stub network will typically send much or all of its (non-local) traffic out a default route.
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