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Re: [NV-L] Netview not discovering

To: Tivoli NetView Discussions <nv-l@lists.ca.ibm.com>
Subject: Re: [NV-L] Netview not discovering
From: Jane Curry <jane.curry@skills-1st.co.uk>
Date: Fri, 01 Sep 2006 00:01:08 +0100
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Do you have firewalls in the way?? Have you tried using tracert to see what happens to packets? Do you have routing problems?

Cheers,
Jane

Robson Souza wrote:
Hi James,
Thx for your fast replying. Yes, that's a new instalation, but we don't use names for the routers in our network. There are only routers ip addresses in the seed file. In any way, we just use name resolution for our servers and it's OK. As you advised, we checked the machine and the Netview SNMP communities. There was really a difference between one and another one. After that, we have configured the both with the same community. But there have not been some effects. The netmon trace was enabled with -1 option already. As I said, I can see in that file a lot of ping attempts to all of routers I have put in the seed file. But those pings does not happen effectively through a sniffer installed in the same machine. Robson On 8/24/06, *James Shanks* <jshanks@us.ibm.com <mailto:jshanks@us.ibm.com>> wrote:

    Is this a brand new installation?    Then I would check your name
    resolution, especially if your seed file has names in it.  They must
    resolve correctly, both forward (hostname to IP address) and back (IP
    address to hostname).  I would also check, using snmpconf (you can
    invoke
    that from the command line), that either the SNMP community string
    that you
    have for the global default is the same as the one as the NetView
    machine
    itself, or that you have a separate entry for the NetView machine
    and for
    127.0.0.1 <http://127.0.0.1> which specify the correct community
    name to use.  netmon gets
    very confused when it cannot talk to SNMP on its own machine.

    If that's no help, then you can try looking more closely at the netmon
    trace.  You did not indicate whether you just examined the file or
    set some
    options to get more information.  You can turn on the full netmon
    trace
    from the command line with "netmon -M -1" and watch what happens as he
    runs.  You can turn it off again with "netmon -M 0".  If you can't
    get any
    clues from the netmon trace, then I would open a problem to IBM
    Support,
    since the netmon trace is not really designed as a user-friendly
    interface.
    It's most useful to a netmon specialist, particularly one who has
    access to
    the code.

    Hope this helps,

    James Shanks
    Level 3 Support  for Tivoli NetView for UNIX and Windows
    Network Availability Management
    Network Management - Development
    Tivoli Software, IBM Corp



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                                          [NV-L] Netview not discovering
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    Hi all,

    We have got the following problem:

    We have just installed Netview 7.1.4 with FP04 in a Windows 2000
    Server.
    After the instalation, we expected that the discovery process
    started to
    find out our network but it does not occurs.
    The seed file is OK and it has a lot of routers included in it.
    I have enabled the netmon trace in order to see if the netmon is
    trying to
    discover the network through the ping mechanism. The netmon.trace file
    denounces that its trying to ping each of router IP.
    To be certain about that, I enabled a sniffer to capture the ICMP
    packets
    related above. For my surprise, there was not any ICMP packet
    trying to get
    out through the network interface.
    I have tested the Netview ping utility to ping the routers: it is
    working.
    And I have tested the ping through Windows CLI, it is OK too.

    Does anybody have an idea to solve this problem?

    Robson



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