Larry,
This is where I'm at with discovery...
A discovery of non SNMP nodes (i.e. ICMP nodes) did happen over time. It
appears they are discovered using clues from the routing tables and ARP
caches of the routers. The systems that have not been discovered seem
mostly to suffer from incorrect or missing DNS entries. I think it is safe
to say that if a node has an IP address that responds to a ping, has a
correct DNS entry and is not excluded from or limited by an entry in the
netmon.seed file, NetView will eventually discover it. (Note if a node is
excluded in netmon.seed, netmon will discover it - but throw it away. The
reply from James Shanks also helped me to understand that a range in the
netmon.seed file limits discovery by telling netmon that if it finds any
node outside a range - it should also throw it away).
Sometimes things can be speeded along by actively routing traffic to the
node from your NetView server (i.e. send a long succession of pings to it)
After a couple of days of discovery, I intend to dump the db using
ovtopodump, and import the resulting data into a spreadsheet for
comparison with various lists I have obtained from network and system
managers (most companies usually have a spreadsheet for IP address
allocation). My strategy now is to create a production copy of netmon.seed
(to prevent netmon from trying to re-discover everything) then add missing
node's IP addresses and exclude some networks I am not interested in (such
as development networks) and stop/start netmon.
Hope this helps
John
McGuire Larry G
<Larry.G.McGuire@irs.gov To:
"'john.j.mackney@accenture.com'" <john.j.mackney@accenture.com>
> cc:
Subject: RE: [nv-l] No non-SNMP
devices in database
24/09/2002 20:37
John,
I thought this was a very useful question, but, never saw anyone respond to
it via the list. Did you get any replies that you can share with me?
Thanks,
Larry McGuire
Phone: 512-460-8858
-----Original Message-----
From: john.j.mackney@accenture.com [mailto:john.j.mackney@accenture.com]
Sent: Monday, September 09, 2002 12:08 PM
To: nv-l@lists.tivoli.com
Subject: [nv-l] No non-SNMP devices in database
I have set up a seed file with all the important routers in it. Netmon has
discovered them all and built a topology map.
I can not locate any non SNMP nodes in my database (servers etc). I look
using locate, and the objects IP address or DNS name but no objects are
found. As these servers should be discovered using ICMP ping, I assume
community names do not come into it.
Notes:
I did not specify Limit Discover in the file so I expected it to discover
these ICMP ping systems too.
I want to monitor these systems for availability using NetView and manage
their resources using Tivoli DM
Am I going about this the right way???
This message is for the designated recipient only and may contain
privileged, proprietary, or otherwise private information. If you have
received it in error, please notify the sender immediately and delete the
original. Any other use of the email by you is prohibited.
---------------------------------------------------------------------
To unsubscribe, e-mail: nv-l-unsubscribe@lists.tivoli.com
For additional commands, e-mail: nv-l-help@lists.tivoli.com
*NOTE*
This is not an Offical Tivoli Support forum. If you need immediate
assistance from Tivoli please call the IBM Tivoli Software Group
help line at 1-800-TIVOLI8(848-6548)
This message is for the designated recipient only and may contain
privileged, proprietary, or otherwise private information. If you have
received it in error, please notify the sender immediately and delete the
original. Any other use of the email by you is prohibited.
|