OSPF Authentication

From: Carter, Lee (Lee.Carter@CommerceBank.com)
Date: Fri Nov 21 2003 - 16:48:47 GMT-3

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All,

I have a hub / spoke setup and am working on a lab that has asked me to do
the following:

R2=Hub

R1&3 = Spokes in a point-to-multipoint connection

Configure OSPF link authentication between R2 & R1 but NOT R3 and R2.

I can do this using tunnel interfaces but this seems like a lengthy
configuration having to deny OSPF to the physical R1 interface and only
permit OSPF out the tunnel interfaces...

Is there another creative way to authenticate only part of the routers (r1 &
r2) without bring up authentication on the whole link (r1, r2 & r3)?

Thanks,
Lee

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