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RE: DPU Nodes reported Down/Up by Netmon

To: nv-l@lists.tivoli.com
Subject: RE: DPU Nodes reported Down/Up by Netmon
From: "Leslie Clark" <lclark@us.ibm.com>
Date: Mon, 17 Sep 2001 06:54:54 -0400
The default is to ping. They are only polled via SNMP under these
circumstances:
1) you put them in the seedfile with $
2) you put a P flag in the oid_to_type file for that snmp sysobject id
3) the node is a router with an unnumbered serial interface that connects
to another router with an unnumbered serial interface.

Therefore, if, as you say, the nodes are being polled via SNMP, and they
are not snmp enabled, it can only be because you configured netview to do
this by method 1 above. There should be no need to force it to go the other
way, and so there is no method to do that, as far as I know. You can tell
from
the output of demandpoll which way it is using to obtain interface status
info
(as opposed to configuration info).

Cordially,

Leslie A. Clark
IBM Global Services - Systems Mgmt & Networking
Detroit



                                                                                
                        
                    z_esm_karekars                                              
                        
                    <z_esm_karekars@bharatpetr       To:     Leslie 
Clark/Southfield/IBM@IBMUS          
                    oleum.com>                       cc:                        
                        
                                                     Subject:     RE: [NV-L] 
DPU Nodes reported Down/Up 
                    09/17/01 03:19 AM                 by Netmon                 
                        
                                                                                
                        
                                                                                
                        
                                                                                
                        



Hi Les,


Sorry to bother U again, Can U pls mail me the steps how can I configure
and IP address to be polled for status through Ping and not through SNMP
Status Poll.


Regards,
Santosh


     ----------
     From:   Leslie Clark[SMTP:lclark@us.ibm.com]
     Sent:   Friday, September 14, 2001 9:54 PM
     To:     z_esm_karekars
     Subject:        RE: [NV-L] DPU Nodes reported Down/Up by Netmon


     Absolutely. If they are not snmp-enabled, then Netview cannot poll
     them
     via SNMP. If I gave you the impression that they could, I apoligize.
     Only
     snmp-capable things can be polled via SNMP. Remove the $ entries
     in the seedfile, then stop and restart netmon. It should change
     methods
     on the next round, but if it does not appear to take effect right
     away,
     select a bunch of them and demandpoll them (from a smartet, perhaps).


     Cordially,


     Leslie A. Clark
     IBM Global Services - Systems Mgmt & Networking
     (248) 552-4968 Voicemail, Fax, Pager







                         z_esm_karekars

                         <z_esm_karekars@bharatpetr       To:     Leslie
     Clark/Southfield/IBM@IBMUS
                         oleum.com>                       cc:

                                                          Subject:     RE:
     [NV-L] DPU Nodes reported Down/Up
                         09/14/01 09:28 AM                 by Netmon









     Hi Les,





     As U had mentioned to enter $ in front of the IP Address of the DPU's
     Do U
     suggest this as they are not SNMP complient ?, but the help in seed
     file is
     not clear as follows. Should I try this to enable ICMP ping for these
     DPU's
     in place of SNMP status poll ?





     Please advice ASAP





     Regards,
     Santosh





     #    SNMP Status Support
     #
     #      Nodes that have serial interface cards will automatically use
     SNMP
     #      to query for ifAdminStatus and ifOperStatus for ALL interfaces
     on
     #      that node.  Specify other nodes you would like to use SNMP to
     query
     #      for status instead of ICMP pings here.
     #
     #      Use the prefix '$', and use the same syntax for ranges and
     wildcards


     #      described above for positive seed entries.  For instance,
     #
     #        $1.1.2-10.221-230
     #





          ----------
          From:   Leslie Clark[SMTP:lclark@US.IBM.COM]
          Reply To:       IBM NetView Discussion
          Sent:   Friday, September 14, 2001 6:36 PM
          To:     IBM NetView Discussion
          Subject:        RE: [NV-L] DPU Nodes reported Down/Up by Netmon





          Are the events faster than your polling cycle (eg 5 minutes)?
          If the up/down events are coming faster than your polling cycle
     then
          there are two possibilities:
          1) They are sending traps (link up, link down) and Netview is
     reacting
          to
          them,
          and frequently catching them in an actual down state. Not likely,
     but
          possible
          2) Router Fault Isolator is running, and misbehaving due to the
     nature
          of
          you
          network. Perhaps there is a route to that subnet that Netview
     cannot
          see.
          In
          that case, you can turn off RFI by adding '-K 0' as a parameter
     in the


          netmon.lrf file. The procedure is described in the 6.0.1 release
          notes.





          If the events are the same frequency as your polling cycle, eg 5
          minutes
          apart, then it is either a timeout, or it has to do with the
          difference
          between
          status via ping or status via snmpget. If these devices are not
     snmp
          capable,
          be sure you are not polling them via SNMP. For instance, if you
          entered
          them in the seedfile with $, or put a P in the oid_to_type file
     for
          them,
          then
          the demandpoll (or regular netmon poll) will turn them red, but a

          test...ping will
          turn them green.





          I know none of this sounds exactly like your situation, from the
          infomation
          you have given us, but perhaps these clues will help you figure
     out
          what
          is going on.





          Cordially,





          Leslie A. Clark
          IBM Global Services - Systems Mgmt & Networking
          Detroit










                              z_esm_karekars


                              <z_esm_karekars@bharatpetr       To:
     "'IBM
          NetView Discussion'" <nv-l@tkg.com>
                              oleum.com>                       cc:


                              Sent by:                         Subject:
     RE:
          [NV-L] DPU Nodes reported Down/Up
                              owner-nv-l@tkg.com                by Netmon






                              09/14/01 07:56 AM


                              Please respond to IBM


                              NetView Discussion











          Hi,








          I tried setting the SNMP polling interval and timeout as high as
          possible
          but still trapd.log gets updated with Netmon events for these
     DPU's at
          very
          fast Down/Up events. Where else could be the problem.








          Regards,
          Santosh








               ----------
               From:   Jane Curry[SMTP:jane.curry@skills-1st.co.uk]
               Reply To:       IBM NetView Discussion
               Sent:   Thursday, September 13, 2001 3:26 PM
               To:     IBM NetView Discussion
               Subject:        Re: [NV-L] DPU Nodes reported Down/Up by
     Netmon








               Put an entry for these devices in your ovsnmp.conf (Options
     ->
          SNMP
               Configuration).  I would suggest increasing both the timeout

          interval
               and also, perhaps, the retries if the lines are a loss-y.








               Cheers,
               Jane
               z_esm_karekars wrote:











                    Hi,








                    I have Netview 6.0.1 on AIX 4.3.3








                    We have almost 180 DPU (SNMP Not supported) locations
     on
          slow
                    link in our Wide Network. It is reported in trapd.log
     that
          very
                    frequently they go Down and come Up so fast (which
     could be
                    because of slow link response). If I do a query to
     database
          for
                    these DPU's Up/Down status, it becomes a huge and non
          relevent
                    data.








                    Can I have some solution for this so that the genuine
     DPU
          Down
                    and Up will be reported to trapd.log








                    Regards,
                    Santosh








               --
               Tivoli Certified Enterprise Consultant & Instructor
               Skills 1st Limited, 2 Cedar Chase, Taplow, Bucks, SL6 0EU,
     UK
               Tel: +44 (0)1628 782565
               Copyright (c) 2001 Jane Curry <jane.curry@skills-1st.co.uk>.
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               rights reserved.














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