[c-nsp] shutdown process on interfaces in cisco routers

[Gert Doering]

Hi,

On Mon, Oct 01, 2012 at 10:16:05AM +0100, Nick Hilliard wrote:
> On 01/10/2012 09:34, Mikael Abrahamsson wrote:
> > I have feature requested to Cisco that when a port is shut down, all
> > routing protocols should be shut down gracefully before the port is turned
> > off. So basically "leave nicely" instead of "abruptly".
> 
> problem is, "shutdown" is the "kill -9" of interfaces - it drops carrier
> abruptly and leaves everything else sort itself out.  If you want a
> graceful shutdown then you need a separate command with hooks to all of the
> protocols running on the interface - and there are usually a lot of those.
>  I suspect this would would be troublesome to implement.

... but it would be tremendously useful :-)

It could hook into the "ip dampening" infrastructure, which is already 
there to signal "interface is up, but not suitable for routing".

IPv4 only, of course.  Bah.

gert
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Gert Doering - Munich, Germany                             gert at greenie.muc.de
fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de
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