On Wed, Oct 18, 2000 at 03:55:41PM -0400, Johannes Erdfelt wrote:
> On Wed, Oct 18, 2000, Andi Kleen <ak@suse.de> wrote:
> > On Wed, Oct 18, 2000 at 03:35:46PM -0400, Christopher Friesen wrote:
> > > Now what I'm trying to figure out is why anyone would want this value to
> > > NOT be set to zero. When would you not want route flushes and route
> > > changes to take immediate effect?
> >
> > Mostly to avoid total breakdown of a BGP4 router when routes are flapping.
>
> Isn't that what route dampening is for? The routing daemon would handle
> this situation to avoid the total breakdown.
The routing subsystem is designed to handle multiple routing daemons. A flush
operation is relatively costly, so it is a good idea to do it in longer intervals
no matter how the routes are changed (and using an user mode daemon for that would
be overkill)
-Andi
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