[c-nsp] deactivate line with too many packet drops?

[Gert Doering]

Hi,

On Mon, Sep 26, 2005 at 09:14:27AM -0500, John Kristoff wrote:
> > is there a way (e.g. using BFD, or some other magic smoke) to
> > deactivate a line that has more than "x" percent packet loss?
> 
> If there were, I think you'd want to be careful using it.  Depending
> on the algorithms a process like this would use, it could result in
> significant route oscillation if the loss (or other property, e.g.
> utilization) were transient or sporadic.

Tie this to something similar to "ip interface dampening" (exponential 
backoff) and all is well :-)

Of course you need to be careful about oscillation - but how's that
different from "routing protocol goes down if the line breaks and the
line protocol goes down as well"?

gert

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Gert Doering - Munich, Germany                             gert at greenie.muc.de
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