[c-nsp] enhanced object tracking

[Serguei Bezverkhi]

Hi,

It is a bit funny because answer to your problem is already in your email's
subject.

Depending on IOS your are running you can track lots of things. For example
you can track end-to-end IP reachability and attach it to HSRP.

There is a document on CCO with exact the same name, which will walk you
through different scenarios.

HTH 

Serguei  

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of
christian.macnevin at uk.bnpparibas.com
Sent: Friday, April 15, 2005 11:39 AM
To: matthew at crocker.com
Cc: ECLAEREB at mail.mobistar.be; cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] enhanced object tracking

Shoot me if I'm wrong, but the way I remember it, shutting down the
subinterface at the local end (presuming you're the DTE) won't produce
failover. The reason is that the DLCI is still showing up within the LMI
and the interface never really goes down. So if you want to force failover,
the only way to do it is to shut down the physical interface - maybe not so
nice if you've got more than one PVC on there.

Having said this, something about bidirectional LMIs comes to mind. Anyone?






Internet
matthew at crocker.com@puck.nether.net - 15/04/2005 16:27


Sent by:    cisco-nsp-bounces at puck.nether.net

To:    ECLAEREB

cc:    cisco-nsp


Subject:    Re: [c-nsp] enhanced object tracking



HSRP supports interface tracking so you should be able to track the
interface handling the PVC and have the HSRP failover when the PVC
drops

http://www.cisco.com/en/US/tech/tk648/tk362/
technologies_tech_note09186a0080094a91.shtml#intracking

add 'standby track atm x/y.z' in your ethernet interface config

-Matt

On Apr 15, 2005, at 10:59 AM, CLAEREBOUDT Elke wrote:

> Hi,
>
> I have 2 internet routers configured in HSRP who are connected via
> ethernet switches (and an atm cloud).
> Each router has a default route to internet and they also have a
> point-to-point pvc between them.
> The public subnet which should be reached coming from internet is the
> directly connected LAN, so no routing needs to be done on the routers.
>
> Problem is when the uplink between the ethernet switch and the atm
> cloud
> goes down, the ethernet of the router stays up and it will keep sending
> traffic on the wire, which will go  nowhere.
> Is there a solution (some sort of ip address tracking) which will
> change
> the routing (except of dynamic routing ofcourse) ?
>
> Thx
>
> elke
>
>
>
>
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