If you are running 6.0 I beleive this is a new feature.   Look at 6.0
release notes pg-3.  

Jeff Fitzwater
CIT Systems & Networking
Princeton University

Keith Webster wrote:
> 
> Does anyone on the list have any information or know where I can get
> info on how to correlate events coming from a router that is down i.e.
> node down and interface down and the devices behind it so that only the
> router events (root cause) are displayed or alerted on and not the
> devices behind the router that are actually still up.
> 
> I would like to eliminate the unnecessary events and alerts.
> 
> Thanks,
> Keith Webster
> 
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