Stub routers

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May 30th, 2007

I am kind of confused about stub routers . Could somebody explain it to me. From my understanding the default route has to be always on it

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scottmac Wed, 05/30/2007 - 15:50

The general basic concept is that a "Stub" is a network with only one entrance/exit, as opposed to a more centrally located network that passes traffic from this location to that location (like part of the core network or the "hub" in a hub-and-spoke topology).

Since there is only one entrance/exit to the stub network, the only route necessary for stub clients is the "Default Route" ("How do I get off this LAN")

It wouldn't make sense to distribute the full boatload of routes to behind the stub router, becasue all routes to everywhere else is going to be through the stub router.

By declaring it a "Stub" you save the routing protocol update bandwidth (traffic and processor time), memory and process time *not* dedicated to routing tables and some other benefits.

If you have a more specific question, post it up and we can take another whack at it.

Good Luck

Scott

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