From: Pickell, Aaryn (Aaryn.Pickell@xxxxxxxxxxxxx)
Date: Sun May 20 2001 - 22:13:37 GMT-3
> Guys,
>
> When you configure MD5 authentication for a certain OSPF area
> (lets say area
> 1), all routers in area 1 needs to have the MD5
> authentication setup using the
> same key....is this correct ??
All routers in the area must have authentication enabled. I don't believe
that it needs to be the same key, though. Everyone on the same segment must
have the same key, though. But, I would assume that the reason that the
keys are associated with the interface is so that you may have different
keys on different segments. I haven't checked this to be certain, though.
> Secondly, the routers in Area 1 will continue to communicate
> with routers from
> other areas (say area 2), even though Area 2 routers don't have any
> authentication setup.. is this correct ??
Well, border routers in area 1 who have authentication enabled will
communicate with other routers in area 0, assuming that area 0 has no
authentication enabled. Obviously, the area 1 only routers will only be
talking to other area 1 routers.
Aaryn Pickell - CCNP ATM, CCDP, MCSE
Senior Engineer - Routing Protocols
Getronics Inc.
Direct: 713-394-1609
Email:aaryn.pickell@getronics.com
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