RE: [NV-L] Finished scan?

[Leslie Clark <lclark@us.ibm.com>]

When you see a node added, then you
know where it is in the discovery process. I suppose that list of addresses
is all of the addresses possible?  I would not have any idea on an
eta. You could do the math, I guess, based on the timeouts and reries you
set in xnmsnmpconf. You might try making that kind of short, like 1 and
1. 

If you have 84888 hints, then you know
it has started on them all.  You won't know when you have finished
unless you know how many you were meant to find. That could be determined
by running a ping against that same list and capturing the results. All
of the ones that are up should be in the database as interfaces on nodes.
I'd use a combination scripts like objifemT.sh and a version of pingem.sh
etc to validate the results. 

Cordially,

Leslie A. Clark
IT Services Specialist, Network Mgmt
Information Technology Services Americas
IBM Global Services
(248) 552-4968 Voicemail, Fax, Pager

"Kain, Becki \(B.\)" <bkain1@ford.com>
Sent by: nv-l-bounces@lists.ca.ibm.com

04/26/2007 10:59 AM

Please respond to
Tivoli NetView Discussions <nv-l@lists.ca.ibm.com>

To	"Tivoli NetView Discussions" <nv-l@lists.ca.ibm.com>
cc
Subject	RE: [NV-L] Finished scan?

thanks Leslie:
 
what is the eta of running this,
on 84888 ips, assuming 10% of the nodes are actually up?  24 hours?
 12 hours?  oh, and assuming line speed (this servers are in
the same building as the netview servers, so we're not concerned with latency
of the network).
 
what am I checking again for -
there is no "I am done with this list, at least for first discovery"
message in the trap log , is there?
 
I have to present this data to
a group of people and I can't say definitively that the scan is done, it
seems.  or am I missing something?  will turning RFI off help?
 
thanks again

---

From: nv-l-bounces@lists.ca.ibm.com
[mailto:nv-l-bounces@lists.ca.ibm.com] On Behalf Of Leslie Clark
Sent: Wednesday, April 25, 2007 10:08 PM
To: Tivoli NetView Discussions
Subject: Re: [NV-L] Finished scan?


Those are 'hints'. First it goes through that whole list and makes hints
with just those two fields. Eventually (probably before it makes 84K hints)
it will start making networks and segments to support the addresses and
masks, if it knows them, then it will make interfaces to put on the networks,
and then it will make the nodes. So doing it that way, with a very long
explicit list, can look like it takes a very long time.   You might
just give it overnight and check again.  It sounds pretty normal.

Probably in the long run it will take the same amount of time, but there
are other ways to approach it. One would be to make the range rules, as
I am sure you have tried, and then run a ping script that pings all of
those addresses from the outside. That would be a 'one at a time'  (one
interface, network, and node) approach that might give you more immediate
feedback than the method you are using now, which is more batch-oriented
(make all the hints, then make all the networks....etc). 

One down side of doing it with a long explicit list is that Netview kind
of hopes that all those entries are SNMP. You can end up with a lot of
bad subnet assignments if you don't have some routers in there first, so
real subnets are created. Then the things that are non-snmp are likely
to be assigned to good subnets. 

Cordially,

Leslie A. Clark
IT Services Specialist, Network Mgmt
Information Technology Services Americas
IBM Global Services
(248) 552-4968 Voicemail, Fax, Pager

"Kain, Becki \(B.\)" <bkain1@ford.com>
Sent by: nv-l-bounces@lists.ca.ibm.com

04/25/2007 02:36 PM

Please respond to
Tivoli NetView Discussions <nv-l@lists.ca.ibm.com>

To	"Tivoli NetView Discussions" <nv-l@lists.ca.ibm.com>
cc
Subject	[NV-L] Finished scan?

Dear learned folks:

I have a seedfile that is 84444 entries long.  I don't see any other "A node added" records in my trapd.log from restarting netmon.  It looks like the discovery only took about an hour. I tried to tease about the data with:

nvUtil e isNode=TRUE

But I have a lot of entries in the database that look like this:

bkain1@fcis249:~ $ ovobjprint -s fcas534.dearborn.ford.com
              OBJECTID                SELECTION NAME

OBJECT: 5480

        FIELD ID        FIELD NAME                      FIELD VALUE
      10              Selection Name                  "fcas534.dearborn.ford.com"
      11              IP Hostname                     "fcas534.dearborn.ford.com"

So isNode didn't pick it up.

Is discovery finished?  Why aren't the entries for most nodes being filled in?

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