[c-nsp] Temporarily disable all forwarding on ASR9K

[arulgobinath emmanuel]

null0 doesn't cause the NHRP to trigger IMHO  this will be a disaster  .
shut / no shut is the easiest but it doesn't simulate the whole part.  real
test comes when the modules crash when reloading specially after  couple of
years... :)
what if we copy a empty config ??? and rollback the config ? i didn't test
this anyway .


On Wed, Aug 14, 2013 at 10:13 PM, Pete Lumbis <alumbis at gmail.com> wrote:

> Copy/paste a bunch of null0 routes?
>
> deny any acls on interfaces?
>
>
> On Wed, Aug 14, 2013 at 10:54 AM, John Neiberger <jneiberger at gmail.com
> >wrote:
>
> > We need to upgrade some ASR9Ks that have a lot of connected devices with
> > complex interrelationships and we have to do a lot of work to make sure
> all
> > the correct redundancy is in place prior to the upgrade. Since the router
> > takes so long to reload, I'd like to find a way to essentially simulate
> the
> > loss of forwarding for a minute or so to verify that our redundancy
> > preparations were thorough, but I need to be able to back out of it
> > quickly. I thought about shutting down the linecards but that's still a
> > fairly long restart. I'm hoping to find some method much faster than
> that.
> >
> > The simplest and most straightforward way is to shut down all the
> > interfaces manually and then rollback if necessary. We can take it out of
> > routing by setting the overload bit in ISIS, but that still leaves
> routing
> > and forwarding in place for locally connected interfaces, which is what
> we
> > want to stop. We were tossing around some ideas and wondered, probably
> just
> > academically, if there were a way to completely stop forwarding
> > temporarily.
> >
> > Is there a way to disable forwarding through an ASR9K that is easily and
> > quickly reversible? We'll probably do the interface shutdown method since
> > it's so simple, but now I'm curious what other options might be
> available.
> > _______________________________________________
> > cisco-nsp mailing list  cisco-nsp at puck.nether.net
> > https://puck.nether.net/mailman/listinfo/cisco-nsp
> > archive at http://puck.nether.net/pipermail/cisco-nsp/
> >
> _______________________________________________
> cisco-nsp mailing list  cisco-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-nsp
> archive at http://puck.nether.net/pipermail/cisco-nsp/
>