There are two related commands that prevent flooding of OSPF LSAs:

ospf database-filter all out
neighbor a.b.c.d database-filter all out

I'm curious about how precise they're being with the word 'flooding'. 
Will this command stop *all* LSAs or does it simply filter out the
periodic flooding of LSAs roughly every 30 minutes?

Again, I don't have a way to test this at work at the moment and I
can't find a better explanation on CCO, at least so far.

It seems to me that if it stops all LSAs, there's not too much
difference between that and the passive-interface command.  The command
references specifically use the word 'flooding' so at this point I'm
thinking they are only referring to the periodic flooding of LSAs and
not the other types of LSA exchanges.

Regards,
John




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