Could you accomplish this by making the area containing the ASBR a
stubby area?  IIRC, you can put an ASBR inside a stubby area but the
Type-5 LSAs will not leave the area.  I'm not sure about that, but I'd
swear I read that somewhere recently.

Okay, I just checked this in Giles, 2nd edition.  According to him, the
above is true.  But who knows if it works in the real world.

Good luck!

John

>>> "[EMAIL PROTECTED]"
 7/12/01 1:58:11 PM >>>
hi all,

have a problem that has been nagging at me for a good long time now...

say you have a pair of ABRs sitting at an OSPF area boundary, and an
ASBR is
originating Type-5 LSAs from inside the non-backbone area.  Is there an
easy
way to suppress the propagation of the type-5s outside the area?  I
would
have a range statement on the ABRs to advertise the area aggregate, I
just
want to suppress the more specifics.

I have tried using 'distribute-list out ' which would do it for
me, but for some reason IOS won't allow this with OSPF:

router(config)#router os 1
router(config-router)#distribute-list 1 out FastEthernet 0/0
% Interface not allowed with OUT for OSPF
router(config-router)#

I suppose that allowing this could potentially screw up routing if
done
without some care, but JunOS lets you do exactly this sort of thing -
you
can produce some wacky policies, but at least you have the option ;-)

btw - I know I could prolly do this with multiple OSPF instances and
redistribute between them, but I *really* don't want to get into this
level
of complexity.

thanks in advance - this one has been driving me mad

Andy




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