Re: [NV-L] NetView Discovery Issues

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

I wonder if that trace means that the
mask on that ip address is 0.0.0.0? That would be a hard one to make. What
does the result of rnetstat -Ix show for that device?

Cordially,

Leslie A. Clark
Detroit

ss cc <steph_cornish@yahoo.com>
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01/04/2007 10:16 AM

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

To	Tivoli NetView Discussions <nv-l@lists.ca.ibm.com>
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Subject	Re: [NV-L] NetView Discovery Issues

Leslie,
My seed file includes routers and switches.  I ran
ovobjprint and ovtopodump to search for the first 3 octects of the IP addresses.
 I turned netmon trace on with a -1 trace mask value.  I've tried
forcing NetView to discover these devices by doing an extended ping from
the command line.  Here's some output from netmon.trace:
 
14:49:27 : ./nl_pinger.c[1519] : revc_icmp:
deleteMatchIp returns null!
14:49:23 : ./nl_hint.c[295] : Addhint(172.18.117.130,0.0.0.0) Best guess
network is <null>
14:49:23 : ./nl_hint.c[306] : Addhint(172.18.117.130,0.0.0.0) rejected
(no network for IP addr)
14:49:23 : ./nl_pinger.c[1559] : -> received unexpected ping, ident=8909
seq=33, from 172.18.117.130

I ran "ovtopofix -a" and have the rw map.
 
I've done everything possible to get these devices discovered.
 What are your thoughts?
 
Stephanie
 

Leslie Clark <lclark@us.ibm.com> wrote:

You don't even need SNMP access to get them discovered. So something more
basic is wrong. 
Is this a Unix or a Windows server? 

Check these things: 
1) If you are using a seedfile, does it exclude the range of addresses
that you are trying to discover? 
2) Have you tried putting the router and switch addresses in the seedfile?
3) Is the map you are looking for them in a r/w map up?
4) Are you sure they are not in there already, maybe on some other node
than you expect? 

For that last one, try 
nvUtil e '("SNMP ipAddress" = "xx.xx.xx.xx")'

5) Remember that a range in the seedfile only allows discovery, it does
not force discovery. If they are found in the arp cache of an existing
device, and they are allowed by the seedfile, they should be discovered.

6) Be sure you are not discovering by a virtual address. Try using the
loopback address of the device. To tell if you are using a virtual, try

   rnetstat -Ix xx.xx.xx.xx 
and check the output to see if that address is in the list of addresses
on the device. If it is missing, Netview will discard the node. 

7) If you have more than one map, and the things were previously discovered
in one of them, they must be deleted from all maps before they can be rediscovered.

8) Do these commands to reorg things that might have gotten out of wack:
   ovstop netmon 
   ovtopofix -a 
   ovmapcount -a 
   ovstart netmon 
   close and open the map
Cordially,

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

ss cc <steph_cornish@yahoo.com>
Sent by: nv-l-bounces@lists.ca.ibm.com
01/03/2007 09:13 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] NetView Discovery Issues

All, 
I have 2 routers and 2 switches on the same subnet which NetView 7.1.4
won't discover.  Each device is reachable via Ping and each one responds
to SNMP polls. 
  
Can someone let me know which MIB objects NetView reads and uses in order
to add new subnets and /or devices? 
  
Thanks In Advance, 
Stephanie 
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