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Home > Archive > CCNP > November 2000 > madchef if you are not far...
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madchef if you are not far...
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| bscn book from netcert confuses me.
can you confirm that abr:
- within stub area abr doesn't flood:
-type-4
-type-5
- within totally stubby area and nssa, abr doesn't flood:
-type-3
-type-4
-type-5
thanks for your help
frans
[This message has been edited by emo francois (edited 11-27-2000).] | |
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| I'm no MadChef . . . but that information was a little confusing to me as well. I DO know this though:
A stub area does not receive type 5 LSAs. A totally stubby area does not receive type 3,4, or 5 LSAs. I believe that this is pretty much what you were saying in the first place. It was just put in a really weird way. Hope this helps.
[This message has been edited by BlueBaron (edited 11-27-2000).] | |
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| Frans,
Me not MadChef either, but I happen to see
a table about LSA type and the corresponding area type, on book 'CCIE Professional Dev.:
Routing TCP/IP' by Jeff Doyle, page 484,
Backbone Area: Allowed LSA 1&2, 3&4, 5
Non-backbone,non-stub: Allowed LSA type 1&2,3&4,5
Stub : Allowed LSA type 1&2, 3&4
Totally stubby: Allowed LSA type 1&2, not Allowed LSA is type 3, EXCEPT for a single type 3 LSA per ABR, advertising the default route.
Not-so-stubby: Allowed LSA type 1&2,3&4, 7
HTH | |
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| thanks for your help!
engel, you say (your book says...), that type-4 are flooded in a stub area.
type-4 lsa advertise the rid of the asbr.
routers need this information in order to reach external routes advertised by type-5 lsa.
but if no external-route are advertised, there's no need to advertise the rid of the asbr either.
then in a stub area, type-4 is useless.
thanks for your comments.
frans | |
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| Who needs MadChef when you've got these guys?
Sorry, but I've actually been really busy for a change.
MadChef |
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