Re: [nv-l] Netview Polling - oid 'unknown IBM'

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

Regarding that mysterious OID 1.3.6.1.4.1.3.1.1.98,
that is a special feature of Netview on the Windows platform. When it does
not recognize the OID because it is not in the oid_to_type file, it sets
it to that as a kind of marker, and makes a Smartset called Bad_OIDS or
something like that, with that oid being the criteria for membership.

For things with that oid you are supposed
to inform Netview about what it is. This takes a couple of steps. The entry
in the oid_to_type file is pretty clear. The Vendor and Agent parts of
that entry must match exactly entries in the vendor list in \usr\ov\fields\c\ovw_fields,
and the agent list in \usr\ov\fields\c\snmp_fields. After updating those
files, you must run the command 'ovw_fields'. Then update the oid_to_type
file. Give it the appropriate flag, G for routers and layer3 switches,
B for bridges, H for hubs or layer2 switches, blank for servers. Those
flags control the level of the map the devices are drawn at (G at the top
level, B & H in the network submap level, blanks inside the segment
submaps). You can also add entries to \usr\ov\conf\c\oid_to_sym if you
want to use a certain symbol for that oid. Stop/start the daemons. Then
delete and rediscover the object.  After that, devices of that type
will have their proper oid and symbol. 

Cordially,

Leslie A. Clark
IBM Global Services - Systems Mgmt & Networking
(248) 552-4968 Voicemail, Fax, Pager

Leslie Clark/Southfield/IBM@IBMUS
Sent by: owner-nv-l@lists.us.ibm.com

01/13/2005 02:23 PM

Please respond to
nv-l

To	nv-l@lists.us.ibm.com
cc
Subject	Re: [nv-l] Netview Polling

Sorry, I meant add the P flag. S is for secondary. P is for poll via snmp.

As for the addresses, I'm not sure what you are asking.  For the 'routers'
on your map, 
try : 

rnetstat -Ix MyRouter1 

You should get results like 
Index                    
   Interface  IP address      Network Mask
   Network Address Link Address 
3                    
 FastEthernet0/0  10.91.132.1     255.255.254.0  
10.91.132.0     0x0006D728A1C1      
5                    
          BRI1/0  10.205.138.7    255.255.254.0
  10.205.138.0    <none>        
      
19                    
    Serial0/0.1  10.210.65.210   255.255.255.248 10.210.65.208
  <none>              
18                    
      Loopback0  10.211.65.210   255.255.255.255
10.211.65.210   <none>            
  

If the device has a Loopback configured, and you know that their standard
is to configure 
the loopback as the trap source, then you have your answer and you can
update your name 
resolution. If the not, then as the traps come in you will have to determine
which router they go with. 
Eventually you will have them all configured. You can use the Find function
to determine where that 
address is in your map, as well. 

The rnetstat command comes with Netview and should be in \usr\OV\bin. 

Cordially,

Leslie A. Clark
IBM Global Services - Systems Mgmt & Networking
(248) 552-4968 Voicemail, Fax, Pager

awatthey@mmm.com
Sent by: owner-nv-l@lists.us.ibm.com

01/13/2005 01:20 PM

Please respond to
nv-l

To	nv-l@lists.us.ibm.com
cc
Subject	Re: [nv-l] Netview Polling

Leslie,

Thanks for this information.  However, am I doing the right thing
here in
the right place?

You say add an S option but the Object ID of the router I've just located
is 1.3.6.1.4.1.9.1.340.  According to the /usr/ov/conf/oid_to_type
file,
that line has the options GS already.

Another router I've located has an Object ID of 1.3.6.1.4.1.3.1.1.98.  The
oid_to_type file says this is 'IBM Unkown' yet the router is a Cisco 3700.
However, I would be able to add S to that line.

Also, the S character is not documented and the P character is documented
as causing the node to be polled using SNMP.

As far as populating the etc\hosts file.  I can certainly do that
but my
problem is going to be finding out what routable IP address goes with which
trap IP address.  Is there no easy way of finding it in the database
as it
must be there on an interface of something somewhere?  If I can find
which
box it is on easily then I may save myself the trouble of populating the
etc\hosts file with static information that could easily become out of
date.

Regards,
Alan.


                    
                     
                     
         
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                 Re: [nv-l]
Netview Polling          
            13/01/2005 15:20    
                     
                   
                    
                     
                     
         
                    
                     
                     
         
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You cannot stop netmon from discovering all addresses on a router, that's
its job. However, in the case where you don't have routing to those
addresses, you should just tell netmon to poll them via snmp. It will then
do an snmpget of the ifOperStatus of all of the interfaces, through the
one
address you do have SNMP access to, and they will be nice and green.  You
can do this either by putting one address for each one in the seedfile
with
$ in front of it, or, in the /usr/OV/conf/oid_to_type file, you can put
add
the S flag to the OID for those types of routers. Stop/start netmon, and
you are all set.

Regarding Francois' advice to add name resolution for the trap sources,
I
would add that when you do this, you want to make sure that the forward
resolution resolves to the address you reach it by. If you were using just
the hosts file, it would be like this:

10.10.10.5  MyRouter1  # the address that I can talk to
10.10.10.1  My Router1  # The loopback address of the router,
where traps
come from

So when Netview discovers it by 10.10.10.5, it will name it MyRouter1.
When
a trap comes in from 10.10.10.1, it will look that address up and assign
it
to MyRouter1 in the events display. When you use menu functions on Netview
against the node MyRouter1, it will lookup the address and use 10.10.10.5.

If the .5 address is already in your DNS, and you decide to add the .1
address to the etc\hosts file on the Windows box, you must also add the
.5
address to the etc\hosts file because the hosts file will take
precidence.

Cordially,

Leslie A. Clark
IBM Global Services - Systems Mgmt & Networking
(248) 552-4968 Voicemail, Fax, Pager



                    
                     
                     
         
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Hi,

I'm on Windows 2000 with Netview 7.1.4 FP2.

I've been doing some traces of what Netview is doing and I've seen quite
a
lot of activity.  I was wondering how I could stop it.  I have
'discover
all networks' with @limit_discovery in my netmon.seed along with a list
of
the ranges it should work with.

Basically we have various parts of the network outsourced.  I have
negotiated SNMP read access to all these routers.  Netview discovers
these
routers quite happily but also discovers that they have lots of other
interfaces with strange IP addresses.  There is no routing in our
network
to these addresses.  Even though I have limited the range of IP addresses
that Netview should discover via the NETMON.SEED file, it still insists
on
PINGing and doing NBNS name lookups on these addresses.  Of course
these
packets flow out of our default route and try to get to the Internet.  This
not only wastes bandwidth but gets our IDS people after me as they think
a
box has a virus trying to get to all sorts of strange addresses which have
nothing to do with our organisation.

Is there an automatic method (forget manually unmanaging things) of
stopping netview from refering to anything not specified in the seed file.

Regards,
Alan.