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RE: Netview discovery status

To: nv-l@lists.tivoli.com
Subject: RE: Netview discovery status
From: "S. Varathu, IBM" <Varathu@bom4.siemens.co.in>
Date: Sun, 18 Mar 2001 07:31:21 +0530
Thanks leslie,   so status changes in topology and object database  are
entirly depends on netmon polling. am i right? it wonn't care if device
sends trap. 

thanks,
varadhu

> -----Original Message-----
> From: Leslie Clark [SMTP:lclark@us.ibm.com]
> Sent: Saturday, March 17, 2001 9:13 PM
> To:   IBM NetView Discussion
> Subject:      RE: [NV-L] Netview discovery status
> 
> Status changes are reflected in both the topology database and
> the object database when netmon notices that something has
> changed. That means every 10 minutes or whatever your polling
> cycle is. BUT - if you put on 6.02, it actively reacts to generic traps
> for cold start, warm start, link up, and link down. I've seen this
> work very well. It does not just react, it goes and checks, so
> the same netmon events are generated as when it does its normal
> polling. So your rulesets don't need to change.
> 
> Cordially,
> 
> Leslie A. Clark
> IBM Global Services - Systems Mgmt & Networking
> Detroit
> 
> 
> "S. Varathu, IBM" <Varathu@bom4.siemens.co.in>@tkg.com on 03/17/2001
> 04:21:46 AM
> 
> Please respond to IBM NetView Discussion <nv-l@tkg.com>
> 
> Sent by:  owner-nv-l@tkg.com
> 
> 
> To:   "'IBM NetView Discussion'" <nv-l@tkg.com>
> cc:
> Subject:  RE: [NV-L] Netview discovery status
> 
> 
> 
> Thanks Les, But still i have doubt. For an example, if i define netmon
> polling interval is 10mts. when it polls to device and one of the
> interface
> is down for the device and display the same down inofrmation in
> GUI.(object
> DB also). Immediately after the poll,  the interface is UP, so the device
> send the trap information to netview about the status. In that case what
> would be the object database? will netview display "UP" information?
> 
> Once again thanks for the info..
> 
> varadhu
> 
> 
> > ----------
> > From:   Les Dickert[SMTP:lesdickert@hotmail.com]
> > Sent:   Friday, March 16, 2001 10:26 PM
> > To:     nv-l@tkg.com
> > Subject:     Re: [NV-L] Netview discovery status
> >
> > Yes, NetView updates the status of objects in
> > the database, and on the maps, based on polling
> > for status.  Events received by NetView have no
> > affect on either, unless you write a special event
> > (trap) handler to do it.  James Shanks has previously
> > (many times) posted a method of changing the status
> > of an object, which could be done upon receipt of
> > an event, but remember that NetView (netmon) is still
> > going to poll for status and might change the status
> > right back.
> >
> > Remember that if a device can send an event trap
> > to NetView that means there is IP connectivity to
> > the device and therefore netmon will think it is
> > up and operational.
> >
> > Les Dickert
> > Verisign Consulting
> >
> >
> > >From: "S. Varathu, IBM" <Varathu@bom4.siemens.co.in>
> > >Reply-To: IBM NetView Discussion <nv-l@tkg.com>
> > >To: "'nv-l@tkg.com'" <nv-l@tkg.com>
> > >Subject: [NV-L] Netview discovery status
> > >Date: Fri, 16 Mar 2001 15:41:41 +0530
> > >
> > >hi,
> > >
> > >Does netview update the status of objects in topology database based on
> > >polling on each device or can trap event generated by the device (say
> > >router) which reflect to corresponding change in topology map?
> > >
> > >Regards,
> > >varadhu
> > >
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