Our environment is made up with Cisco routers,
switches, and what have you. Yes it is a possibility to tune the timeout/retry
information, but we are running a large network and we cannot rely on the
operators to take care of that. In some geo’s in our network we have
unreliable devices or we have NetView telling us that Node’s are down
when they really aren’t, and we are just trying to add some extra
verification before we take that data and put it into our SLA
database.
We’re just using Tivoli NetView
7.1.3 and have no options to purchase or leverage other solutions, other than
ones we can come up with on our own using opensource software or our inhouse
development team.
From:
owner-nv-l@lists.us.ibm.com [mailto:owner-nv-l@lists.us.ibm.com] On Behalf Of Barr, Scott
Sent: Tuesday, September 21, 2004
11:35 AM
To: nv-l@lists.us.ibm.com
Subject: RE: [nv-l] question about
modifying objects in netview 7.1.3
One other consideration –
shouldn’t your SNMP agent be responding to polls more reliably? Have you
tried increasing your timeouts or retries slightly to make the node up / node
down more bullet-proof? Are these solaris boxes by chance? I understand your
desire to guarantee a node down actually means node down but the bottom line is
that if your SNMP is not reliable, then something is wrong with connection to
the box or the agent / workload itself. Maybe the way to avoid engineering a
lot of extra SLA support is just to fix up the
SNMP agents.
Another question is are you using Tivoli
Monitoring and do you have the ITM heartbeat capability? NetView has already
skinned this cat for you with polling so I question why you would work hard to
find some other method of guaranteeing availability? Seems to me that if the
SNMP daemon is running (something that should be checked via cron locally on
the server) then it should answer status polls reliably. Maybe I’m all
wrong here.
From: owner-nv-l@lists.us.ibm.com [mailto:owner-nv-l@lists.us.ibm.com] On Behalf Of Allison, Jason (JALLISON)
Sent: Tuesday, September 21, 2004
11:11 AM
To: nv-l@lists.us.ibm.com
Subject: RE: [nv-l] question about
modifying objects in netview 7.1.3
Well, I think you have a number of options.
Lets take a step back and make sure I have an understanding of what the problem
statement is:
You are using Node Up/Down events to
gather SLA stats (stored in an Oracle
DB). You have found that Netview is not issueing the Node Up/Down in
"real-time", i.e some time after the device actually changed
state. You are looking for means proactively change a state of an
object w/in Netview to facilitate closer "real-time" gathering
of SLA stats.
Does that sound about right?
Jason
Allison
Principal
Engineer
ARINC
Incorporated
-----Original Message-----
From: owner-nv-l@lists.us.ibm.com
[mailto:owner-nv-l@lists.us.ibm.com]
On Behalf Of Freeman, Michael
Sent: Tuesday, September 21, 2004
12:04 PM
To: nv-l@lists.us.ibm.com
Subject: RE: [nv-l] question about
modifying objects in netview 7.1.3
Well we have netmon polling it, but we are
relying on information from the trapd.log to use for SLA
data. Like if we get a Node Down event or Node Up event, we put that into an
Oracle database. We are trying to verify that the Node is really down, in a lot
of cases in our network a Node will go down, and then an operator will do a
demand poll or ping it, and then it will start responding again. So we have a
script that tails the trapd.log file looking for Node Downs and if it receives
one, it does a test trying to open a tcp connection a few times to verify that
its really down, if it is, it gets inserted into the database. We also want to
change the status of that object back to Node Up before netmon gets a chance to
do it. Now of course there are other ways to do this verification by having a
ruleset that has an inline function that does this but we had some problems
with that..
So what do you think I should do? Use the
API and OVwSetStatusOnObject to
change the status, or is there an easier way?
Thanks in advance!
Mike Freeman
From: owner-nv-l@lists.us.ibm.com [mailto:owner-nv-l@lists.us.ibm.com] On Behalf Of Allison, Jason (JALLISON)
Sent: Tuesday, September 21, 2004
10:31 AM
To: nv-l@lists.us.ibm.com
Subject: RE: [nv-l] question about
modifying objects in netview 7.1.3
You can use the API, but if you have
netmon polling that IP device on interval, it will notice the incorrect status
and change it back. Start at "man OVwSetStatusOnObject", this
will give you a start. If you have any specific questions, feel free to
ask. Some statuses are "Reserved" and it wont allow you to
change it via the API (eg Acknowledged), but there are programmatic ways around
that.
Jason Allison
Principal
Engineer
ARINC
Incorporated
-----Original Message-----
From: owner-nv-l@lists.us.ibm.com
[mailto:owner-nv-l@lists.us.ibm.com]
On Behalf Of Freeman, Michael
Sent: Tuesday, September 21, 2004
11:25 AM
To: nv-l@lists.tivoli.com
Subject: [nv-l] question about
modifying objects in netview 7.1.3
We are trying to find a way to modify an object in NetView.
If we know the node name, and want to change its status from say down, to up, because
of an additional verification that proved it was up, how would we go about
doing it? Are there any utilities or where should I look in the API?
Thanks,
Mike
*** Note new e-mail address
--
Michael J. Freeman
Netco Government Services
mfreeman@netcogov.com
--