Than just for academic purposes, here is a problem statement: Remove
device from Smart Set when a BGP trap has not been received in 60
minutes from that device.
I see your solution regarding having a cron remove the device after a
certain period of time, but looking at the problem statement above, I
don't think that solution efficiently solves our problem statement
above. Are there mechanisms in NetView that will solve the issue above,
either systematically or programmatically, i.e. through configuration or
scripts/programs?
I'm curious, as I don't see an easy way outisde of writing an external
timer.
Jason
-----Original Message-----
From: owner-nv-l@lists.us.ibm.com [mailto:owner-nv-l@lists.us.ibm.com]
On Behalf Of Paul
Sent: Thursday, January 27, 2005 11:01 AM
To: nv-l@lists.us.ibm.com
Subject: Re: [nv-l] using SNMP trap to change object attribute
Missed that, well now things get interesting, I could write a script
that ran from cron that removed them every hour or something, but my
feeling is we are still missing information. What is the time limit they
want to use, do they want to base it on a per day basis? There are
several ways this could be addressed:
get the trap, set the flag, wait x minutes, remove the flag. I use a
pass on match node for this with no second input, so it acts as a timer
and then passes the event on. Later in the ruleset after the timer kicks
the flag could be removed.
You could remove them via a cron script, either hourly or daily.
There's just not enough information to determine exactly what he wants
to do, that is going to determine what kind of solutions fits best...
Paul
Allison, Jason (JALLISON) wrote:
>>From Craig's second email, it seems our answer is "Can an attribute be
>set to clear after a certain period of time?" That would mean we would
>want the flag to be removed after a period of time that a specific trap
>has not been received. I am far from knowledgeable about Smart Sets,
>is this possible? What other ways can it be accomplished?
>
>Jason
>
>
>-----Original Message-----
>From: owner-nv-l@lists.us.ibm.com [mailto:owner-nv-l@lists.us.ibm.com]
>On Behalf Of Paul
>Sent: Thursday, January 27, 2005 10:33 AM
>To: nv-l@lists.us.ibm.com
>Subject: Re: [nv-l] using SNMP trap to change object attribute
>
>
>Jason,
>Well first we would want to know what event is going to create a
>situation where the flag should be removed, new traps, specfic traps,
>what? So if we receive BGP traps from a device in the smartset, run an
>action to remove the flag. This could easily be done from a ruleset,
>but we would need more information about what should cause the flag to
>be removed.
>
>Paul
>
>Allison, Jason (JALLISON) wrote:
>
>
>
>>Agreed, but how is the flag on the device being removed/un-set? From
>>my understanding of Leslie's email, it takes an operator action to
>>un-set the flag. How does an operator know if X number of BGP traps
>>have been received in Y amount of time?
>>
>>Jason
>>
>>-----Original Message-----
>>From: owner-nv-l@lists.us.ibm.com [mailto:owner-nv-l@lists.us.ibm.com]
>>On Behalf Of Paul
>>Sent: Thursday, January 27, 2005 9:14 AM
>>To: nv-l@lists.us.ibm.com
>>Subject: Re: [nv-l] using SNMP trap to change object attribute
>>
>>
>>If membership in the smartset requires that flag to be set, once the
>>flag is removed the device should be removed from the smartset. I am
>>not sure of the timing of this,
>>but I would think within 5 minutes or so that device should be
removed.
>>
>>Paul
>>
>>
>>Allison, Jason (JALLISON) wrote:
>>
>>
>>
>>
>>
>>>There is a lot of good information in here. I guess my only question
>>>would be is how are the devices removed from the smartset? Looking
at
>>>
>>>
>>>
>>>
>>
>>
>>
>>
>>>your information below it seems the operator needs to run the
>>>Trap_Flag_Clear.sh (highlight nodes / OVwSelections) in order to
>>>clear
>>>
>>>
>>>
>>>
>>
>>
>>
>>
>>>the condition. From what I understood from the original problem
>>>statement is that after a period of time, the devices should be
>>>removed automatically.
>>>
>>>
>>>Jason
>>>
>>> -----Original Message-----
>>> *From:* owner-nv-l@lists.us.ibm.com
>>> [mailto:owner-nv-l@lists.us.ibm.com] *On Behalf Of *Leslie Clark
>>> *Sent:* Wednesday, January 26, 2005 6:11 PM
>>> *To:* nv-l@lists.us.ibm.com
>>> *Subject:* RE: [nv-l] using SNMP trap to change object attribute
>>>
>>>
>>> I do that sort of thing like this:
>>> 1) add a field to my custom fields file /usr/OV/fields/C/My.fields
>>> Field "My_Trap_Flag" {
>>> Type String;
>>> Flags locate, general;
>>>
>>> }
>>> Run 'ovw -fields' after messing with a fields file.
>>> 2) In trapd.conf, define the traps of interest as having a trap
>>> source of 'Y' instead of the usual 'A' or 'u'
>>> 3) Make a Netview ruleset that with an Event Attribute cube that
>>> checks trap source for 'Y' and invokes an action
>>> '<path>/TrapFlag.sh -set $NVA'
>>> 4) Make that ruleset run in the background
>>> (/usr/OV/conf/ESE.automation)
>>> 5) write a little script TrapFlag.sh that uses nvdbimport to set
>>> the field 'My_Trap_Flag' to TRUE for the node that the trap is
>>>
>>>
>>>
>>>
>>from.
>>
>>
>>
>>
>>> 6) On the reports menu (/usr/OV/reports/C) add two scripts to call
>>> that script: TrapFlagSet.sh and TrapFlagClear.sh
>>>
>>> Trap_Flag_Set.sh
>>> #!/bin/ksh
>>> # Set trap flag to True for the selected nodes.
>>> name=$(basename $0)
>>> xnmappmon -geometry 680x500 -commandTitle "$name" \
>>> -commandHeading "Setting Trap Flag to TRUE for Selected Nodes "
>>>
>>>
>>>
>>>
>>\
>>
>>
>>
>>
>>> -cmd <path>/TrapFlag.sh -set $OVwSelections
>>>
>>> Trap_Flag_Clear.sh
>>> #!/bin/ksh
>>> # Set Trap Flag to false for the selected nodes.
>>> name=$(basename $0)
>>> xnmappmon -geometry 680x500 -commandTitle "$name" \
>>> -commandHeading "Setting Trap Flag to FALSE for Selected Nodes
>>>
>>>
>>>
>>>
>>" \
>>
>>
>>
>>
>>> -cmd <path>/TrapFlag.sh -clear $OVwSelections
>>>
>>> Users can execute those functions against one or more nodes
>>> selected on the map. Usually they would only use the clearing one.
>>> But the setting one is handy for testing.
>>>
>>> The job of the TrapFlag.sh script is to generate an import file
>>> that looks like this:
>>> Selection Name,My_Trap_Flag
>>> nodename,TRUE (or FALSE on the clear)
>>> and run nvdbimport to set the values for the nodes selected on the
>>> map, or indicated by the rule. See the man page for nvdbimport.
>>> There are samples in /usr/OV/conf/nvdbtools.
>>>
>>> Then make your problem smartset include the criteria " ||
>>> My_Trap_Flag=TRUE
>>>
>>> The operators will know that green things in the problem smartset
>>> are there because of traps. They should look up the events for
>>> that node to see what they are. I usually provide another function
>>> on that reports menu that does a grep in trapd.log for the
>>> selected node. You could do the grep right from the script in
>>> /usr/OV/reports/C, but I usually have it all another one in my
>>> custom scripts directory. The reason for this is so I can offer
>>> the same function to web console users as I do to the Motif users.
>>>
>>> Cordially,
>>>
>>> Leslie A. Clark
>>> IBM Global Services - Systems Mgmt & Networking
>>> (248) 552-4968 Voicemail, Fax, Pager
>>>
>>>
>>>
>>> *"Freter, Craig" <Craig.Freter@ssa.gov>*
>>> Sent by: owner-nv-l@lists.us.ibm.com
>>>
>>> 01/26/2005 04:16 PM
>>> Please respond to
>>> nv-l
>>>
>>>
>>>
>>> To
>>> "'nv-l@lists.us.ibm.com'" <nv-l@lists.us.ibm.com>
>>> cc
>>>
>>> Subject
>>> RE: [nv-l] using SNMP trap to change object attribute
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> Jason,
>>>
>>> I assumed that if we set attribute 'IP Status', then it would get
>>> reset the
>>> next time NetView polls the device. If we set another attribute,
>>> then I
>>> assume we will have to reset manually, or use a clearing trap to
>>> reset the
>>> attribute. Can an attribute be set to clear after a certain period
>>> of time?
>>>
>>> How would you suggest that we do this?
>>>
>>> Thanks.
>>>
>>>
>>> --
>>> Craig Freter
>>> Social Security Administration
>>> Mailto:craig.freter@ssa.gov
>>> Phone: 410-965-9502
>>> -----Original Message-----
>>> From: owner-nv-l@lists.us.ibm.com
>>> [mailto:owner-nv-l@lists.us.ibm.com] On
>>> Behalf Of Allison, Jason (JALLISON)
>>> Sent: Wednesday, January 26, 2005 4:10 PM
>>> To: nv-l@lists.tivoli.com
>>> Subject: RE: [nv-l] using SNMP trap to change object attribute
>>>
>>> It can be done (not sure how with smartsets though). The theory
>>> being when
>>> a BGP trap arrives, set a certain status or set some other
>>>
>>>
>>>
>>>
>>attribute.
>>
>>
>>
>>
>>> However, when do you toggle the other way? Meaning, after what
>>> interval do
>>> you want a router to be removed from the smartset?
>>>
>>> Jason
>>>
>>>
>>> -----Original Message-----
>>> From: owner-nv-l@lists.us.ibm.com
>>> [mailto:owner-nv-l@lists.us.ibm.com] On
>>> Behalf Of Freter, Craig
>>> Sent: Wednesday, January 26, 2005 4:02 PM
>>> To: 'nv-l@lists.tivoli.com'
>>> Subject: [nv-l] using SNMP trap to change object attribute
>>>
>>>
>>> Hello,
>>>
>>> System information:
>>> OS - AIX 5.1
>>> NetView - 7.1.3
>>> FixPack3
>>>
>>> We are currently using a Smartset to view Routers that are either
>>> down or
>>> unreachable. Here is the Smartset rule: (('IP Status'='Critical')
>>> || ('IP
>>> Status'='Unreachable')) &&
>>> ('isRouter'=True)
>>>
>>> Besides "Critical' and 'Unreachable', we would also like this
>>> Smartset to
>>> display routers that send BGP traps to NetView. Is there any way
>>> to have an
>>> incoming SNMP trap change the value of 'IP Status', or any other
>>> object
>>> attribute? Is this the wrong use of a Smartset?
>>>
>>> Thanks.
>>>
>>> --
>>> Craig Freter
>>> Social Security Administration
>>> Mailto:craig.freter@ssa.gov
>>> Phone: 410-965-9502
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>
>>
>>
>>
>>
>
>
>
>
>
|