Re: Reliability of NV Status Polling

1998-08-25 22:21:27
Subject: Re: Reliability of NV Status Polling
From: Jonathan Griggs <jfgriggs AT ENTERPRISEINNOVATIONS DOT COM>
To: nv-l AT lists.tivoli DOT com
Date: Tue, 25 Aug 1998 22:21:27 -0400

First are you sure that netmon is configured to handle the current number of
objects in the object database.  By default, netmon is configured for 5000
objects before paging memory out to disk.  Verify that the "-n" option in
the /usr/OV/lrf/ovwdb.lrf is greater than the number of objects reported
from "ovmapcount" command.

Next are you sure that Status Polling Interval is not set small.  In Chapter
6 Section 7 of the TME 10 NetView Administrators Guide it goes into detail
on the setting up the status polling (i.e. it takes netmon on average 5
minutes to poll 5000 objects).

Best regards,

  Jonathan F. Griggs                 jfgriggs AT EnterpriseInnovations DOT com
  Enterprise Innovations           http://www.EnterpriseInnovations.com

> -----Original Message-----
> From: Discussion of IBM NetView and POLYCENTER Manager on NetView et
> alia [mailto:NV-L AT UCSBVM.UCSB DOT EDU]On Behalf Of Jeremy W.
> Sent: Tuesday, August 25, 1998 4:16 AM
> Subject: Reliability of NV Status Polling
> ===============================================================
> All,
> We use both NV/6000 4.1 and NV5.0a/NT. Our customer is very anxious to
> get us to agree that NetView status polling may be unreliable, and that
> interfaces may appear to be down when in fact, all that is happening is
> that the TCP/IP protocol on the machine being polled is TOO BUSY to
> answer the ICMP request!!!
> Is this in any way possible on TCP/IP for NT or AIX?
> If the machine is TOO BUSY to answer a ping, is it not also TOO BUSY to
> answer request for resources (i.e. it is effectively down anyway)?
> Is it possible that some WAN router between networks could be TOO BUSY
> to handle an ICMP packet? Would it not just keep trying?
> Any help from you network techies would be very useful!
> Thanks,
> Jeremy.
> ---------------------------------------------------------------
>  Jeremy Worrell (CS), IBM UK Ltd.            +44 (1926) 462464
>  NT Support                                  jw AT uk.ibmmail DOT com
> ---------------------------------------------------------------

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