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RE: [nv-l] NV 7.1.x SNMP polling

To: nv-l@lists.tivoli.com
Subject: RE: [nv-l] NV 7.1.x SNMP polling
From: Leslie Clark <lclark@us.ibm.com>
Date: Wed, 30 Apr 2003 21:43:32 -0400
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Here's my two cents' worth on this subject. SNMP for status polling costs
more than ICMP in terms of bandwidth and in terms of CPU on the devices
being polled. It also may interfere with Netview's HSRP handling, since
HSRP interfaces do not appear in the interface table. It was originally
intended to provide a way to get status for unnumbered interfaces, which
cannot be pinged by definition. Therefore I take the approach of using it
selectively where it is needed: for unnumbered, of course, and also to get
accurate status of interfaces for which there is no routing - for example,
the second interfaces on servers that would otherwise appear red in the map
even though they are up. Netview will enable it automatically where needed
for unnumbered. I then enable it in the seedfile for nodes where it is
needed to make nodes green where they should be green.

If you enable it on a broad scale, watch it for a while and make sure the
devices respond in a timely fashion and also that netmon keeps up with your
chosen polling period.

Cordially,

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



                                                                                
                                                
                      "JR Miller"                                               
                                                
                      <jmiller5@columbu        To:       
<nv-l@lists.tivoli.com>                                                
                      s.rr.com>                cc:                              
                                                
                                               Subject:  RE: [nv-l] NV 7.1.x 
SNMP polling                                       
                      04/28/2003 11:18                                          
                                                
                      PM                                                        
                                                
                                                                                
                                                
                                                                                
                                                




Excellent!

Thanks for the info,

-JR Miller
      -----Original Message-----
      From: Gareth Holl [mailto:gholl@us.ibm.com]
      Sent: Monday, April 28, 2003 22:55
      To: JR Miller
      Cc: nv-l@lists.tivoli.com
      Subject: Re: [nv-l] NV 7.1.x SNMP polling


      Yes, NetView can poll using SNMP and ICMP, but not the same device.
      The typical configuration might be to poll your Routers using SNMP
      and all other devices using ICMP. No redbooks covering new features.
      Look through each of the Release Notes for 7.1 and then each of the
      maintenance releases. You should find all the Release Notes on the
      7.1.3 CD.

      Gareth Holl
      Staff Software Engineer
      gholl@us.ibm.com

      IBM Software Group - Tivoli Brand
      Research Triangle Park,  North Carolina.

                                                                           
    "JR Miller"                                                            
    <jmiller5@columbus.rr.com>                  To:                        
                                        <nv-l@lists.tivoli.com>            
                                                cc:                        
    04/28/2003 08:46 PM                         Subject:        [nv-l] NV  
                                        7.1.x SNMP polling                 
                                                                           






      Quick  question, I have limited experience with newer NV versions.
      Can NV  7.1.x poll devices using SNMP as well as ICMP?  Has anyone
      experienced  any issues doing this, good or bad?  This would involve
      an AIX  version, if that matters.  Are there any Redbooks that cover
      the new  versions and features of NV?


      Thanks for the  input.


      Jeffrey R. Miller
      Open Systems  Engineer

      Bank One  Corporation
      1111 Polaris Parkway
      Columbus, OH 43240


      [IMAGE]

           [IMAGE]







      #### OVcert.bmp has been removed from this note on April 28, 2003 by
      Gareth Holl
      #### IV.bmp has been removed from this note on April 28, 2003 by
      Gareth Holl




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