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RE: How to test a BRI backup int? posted 02/07/2002
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You can force an ISDN interface to dial by using the following at the exec:

isdn call interface bri0 18885551212

Works in 12.0(1) and higher IOS

This will not work if the backup interface command is in place due to the interface being in standby mode.

Dave Steinke, CCNP/CCDP
sonic@xxxxxxxxx



At 09:54 PM 2/6/2002 -0500, Christopher M. Heffner wrote:
Another way is to look at using a float static route ... be familiar
with all possible methods.

========================================================================
==========
Christopher M. Heffner
IMCR Course Director
Certified Cisco Systems Instructor
CCSI, CCIE, MCT, MCSE, MCNI, MCNE, CLI, PCLP, FCSE, ASE, CTT, A+
cheffner@xxxxxxxxxxxxxxxxxx




-----Original Message----- From: nobody@xxxxxxxxxxxxxx [mailto:nobody@xxxxxxxxxxxxxx]On Behalf Of Erick B. Sent: Wednesday, February 06, 2002 8:15 PM To: Patrick; Mannan Venkatesan; swm@xxxxxxxxxx; 'Antonio Marfil'; ccielab@xxxxxxxxxxxxxx Subject: Re: How to test a BRI backup int?


FYI, Frame-Relay End-To-End Keepalives make 'backup interface' much more reliable with frame.

--- Patrick <pjm@xxxxxxxxxxxxxxxxx> wrote:
> The only way to make it work using backup interface
> is to use a frame-relay
> sub-interface. As long as the physical IF recieve's
> LMI from the frame
> switch it will never go down.
>
> ----- Original Message -----
> From: "Mannan Venkatesan" <mv_lab@xxxxxxxxxxx>
> To: <swm@xxxxxxxxxx>; "'Antonio Marfil'"
> <tony.marfil@xxxxxxxxxxxxxxx>;
> <ccielab@xxxxxxxxxxxxxx>
> Sent: Wednesday, February 06, 2002 11:11 AM
> Subject: Re: How to test a BRI backup int?
>
>
> > Testing is fine, but it doesn't serve the real
> purpose (backup), right??
> If
> > there is a problem between remote switch and the
> remote router, then local
> > interface is still up/up and backup doesn't work.
> May be, dialer watch is
> > the solution here.
> >
> > Thanks,
> > Mannan
> >
> > ----- Original Message -----
> > From: "Scott Morris" <swm@xxxxxxxxxx>
> > To: "'Mannan Venkatesan'" <mv_lab@xxxxxxxxxxx>;
> "'Antonio Marfil'"
> > <tony.marfil@xxxxxxxxxxxxxxx>;
> <ccielab@xxxxxxxxxxxxxx>
> > Sent: Wednesday, February 06, 2002 8:01 AM
> > Subject: RE: How to test a BRI backup int?
> >
> >
> > > Couple ways...
> > >
> > > The simplest way is physical disconnection.
> > > Otherwise, get to the frame switch and shut the
> interface down.
> > >
> > > Beyond that, if you are running sub-interfaces,
> you can put the backup
> > > interface command specific to that sub-if. And
> DLCI.
> > >
> > > Otherwise the "up" associated with the line
> itself has to do with
> clocking
> > > your router is receiving from the frame switch.
> Even if ALL of your
> > DLCI's
> > > go to inactive, you are still exchanging LMI's
> 'n' receiving clock from
> > the
> > > DCE device (frame switch).  So, either unplug it
> or perform a "shut" at
> > the
> > > frame switch.
> > >
> > > That will accomplish what you are looking for.
> Enjoy!
> > >
> > > Scott
> > >
> > > -----Original Message-----
> > > From: nobody@xxxxxxxxxxxxxx
> [mailto:nobody@xxxxxxxxxxxxxx]On Behalf Of
> > > Mannan Venkatesan
> > > Sent: Wednesday, February 06, 2002 3:59 AM
> > > To: Antonio Marfil; ccielab@xxxxxxxxxxxxxx
> > > Subject: Re: How to test a BRI backup int?
> > >
> > >
> > > I tried to use FR end-to-end keepalive on a
> multipoint interface and
> when
> > I
> > > shut the remote interfaces, the PVC status
> changes to inactive but the
> > line
> > > protocol stays 'up'. So, I couldn't test 'backup
> interface' command.
> > Anybody
> > > tried this before?
> > >
> > > Mannan
> > >
> > > ----- Original Message -----
> > > From: "Mannan Venkatesan" <mv_lab@xxxxxxxxxxx>
> > > To: "Antonio Marfil"
> <tony.marfil@xxxxxxxxxxxxxxx>;
> > <ccielab@xxxxxxxxxxxxxx>
> > > Sent: Wednesday, February 06, 2002 3:48 AM
> > > Subject: Re: How to test a BRI backup int?
> > >
> > >
> > > > If it is ppp/hdlc encap., shut the remote
> router's interface. It also
> > > works
> > > > with FR P-t-P sub-if.
> > > >
> > > > Mannan
> > > >
> > > > ----- Original Message -----
> > > > From: "Antonio Marfil"
> <tony.marfil@xxxxxxxxxxxxxxx>
> > > > To: <ccielab@xxxxxxxxxxxxxx>
> > > > Sent: Wednesday, February 06, 2002 3:12 AM
> > > > Subject: How to test a BRI backup int?
> > > >
> > > >
> > > > > is there any way to test a backup int
> without physically
> disconnecting
> > > the
> > > > > serial int that you are trying to backup?
> shutting down a serial
> > > > interface
> > > > > for example, when the backup int is a bri
> doesn't do the trick, but
> > > > pulling
> > > > > the cable from the serial int does
> (automatically brings up the bri
> > > int.)
> > > > >
> > > > > thanks,
> > > > > tony


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