Re: Timed interface shutoff....

From: Hong Chan (howard.chan34@gmail.com)
Date: Mon Aug 11 2008 - 09:45:26 ART


Config:
1: Use ACL to permit the GRE port with time-based that the time you want the
physical interface be down.
2: Create a GRE tunnel on unrelated network path and apply the ACL on the
GRE tunnel interface
3: Use "backup-interface" on the GRE tunnel and apply it on the GRE tunnel
interface.

Result:
When the GRE interface is up (ACL permit statement is active), the physical
interface is down(due to backup-interface)
When the GRE is down (ACL permit statement inactive), the physical interface
shoud be up

I haven't test this concept before, but I think it's worth to try

2008/8/7 Lloyd Ardoin <Lloyd@thewizkid.biz>

> I have actually used TCL scripts to do things like this. There are lots of
> those available on the web that people have written to do some very
> sophisticated stuff. It is a bit more complicated than doing something with
> kron but provides a lot more flexibility. Cisco's web site has a nice
> selection or you might try http://blog.ioshints.info/search/label/Tcl.
>
> good luck!
>
> Lloyd V Ardoin
> Network Engineer
> Sagenet, LLC
> 918-270-7133
> lardoin@sagenet.com
> CCDA, CCNP, CCSP, GSEC, GCFW, CISSP
>
>
>
> From: Jason Madsen
> Sent: Wed 8/6/2008 8:50 AM
> To: Biggs, Jeff (M/CIO/BIE)
> Cc: Cisco certification
> Subject: Re: Timed interface shutoff....
>
>
> seems like Kron is the way to go since you don't want to only block the
> traffic e.g. time-based ACL. just make sure your system's time is managed
> properly :-)
>
> Jason
>
> On Wed, Aug 6, 2008 at 7:36 AM, Biggs, Jeff (M/CIO/BIE)
> <JBiggs@usaid.gov>wrote:
>
> > I am looking at trying to turn off and turn on an interface base on a
> > time access. The key here is turn on and turn off, not just kill
> > traffic, so I am testing using CLI and Kron. But does anyone out there
> > have a better idea for this solution? I am probably brain cramping
> > here, but I know there must be something else out there.
> >
> >
> >
> > Jeffrey Biggs
> >
> > CCIE #21127 (R&S)
> >
> > Sr. Network Engineer, M/CIO/BIE
> >
> > Globecomm Systems Maryland, LLC.
> >
> > 240-646-5003
> >
> > jbiggs@usaid.gov <mailto:jbiggs@usaid.gov>
> >
> > jeff.biggs@globecommsystems.com
> >
> >
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> >
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