nv-l

Fw: [NV-L] Linux Suse SNMP agent issue

2007-10-18 18:25:19
Subject: Fw: [NV-L] Linux Suse SNMP agent issue
From: James Shanks <jshanks AT us.ibm DOT com>
To: Tivoli NetView Discussions <nv-l AT d25lcore003.mkm.can.ibm DOT com>
Date: Thu, 18 Oct 2007 18:24:46 -0400

Larry, My apologies.  It's been pointed out to em that most SNMP agents will not let you override the sysDescr string in snmpd.conf.  It's generally an internal thing they reply with when queried.  But that doesn't change the impact of what I said before.  sysDescr only indicates what kind of SNMP agent is responding.  it has nothing whatever to do with whether you can add the host the agent is on with loadhosts.  It does not have to be unique in your database.

James Shanks
Level 3 Support  for Tivoli NetView for UNIX and Windows
Network Availability Management
Network Management - Development
Tivoli Software, IBM Corp

----- Forwarded by James Shanks/Raleigh/IBM on 10/18/2007 06:12 PM -----
James Shanks/Raleigh/[email protected]
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10/18/2007 04:41 PM
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Re: [NV-L] Linux Suse SNMP agent issue






Sorry but no, Larry.  I am totally confused by what you've just said and I recommend opening a problem to Support.  There is nothing unique about the SNMP sysDesc  field.  Every host in your network could have that the same.  It has nothing to do with duplicate IP addresses or loadhosts; it's merely what was returned by that device when it was queried by netmon for that MIB object (system.sysDescr).  Typically what's returned is just a line of text added to the snmpd.conf file on that machine.  And nothing at all depends on what it says.  You can change it to say anything you like and netmon should add and poll the device just fine.


Whatever your problem is, I don't think it has anything to do with SNMP sysDesc.


James Shanks
Level 3 Support  for Tivoli NetView for UNIX and Windows
Network Availability Management
Network Management - Development
Tivoli Software, IBM Corp


Larry Fagan <larrytechie AT yahoo DOT com>
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10/17/2007 04:45 PM
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Re: [NV-L] Linux Suse SNMP agent issue







James,
I know what's happenning.. the suse host i'm trying to add, already exists in netview database on multiple servers under "SNMP sysDecr". So multiple servers has this Suse server name under "SNMP sysDescr". Now i have no idea how Suse name was added to multiple servers. I have to investigate. Any idea what could be wrong?
Thanks,
Larry

----- Original Message ----
From: James Shanks <jshanks AT us.ibm DOT com>
To: Tivoli NetView Discussions <nv-l AT lists.ca.ibm DOT com>
Sent: Tuesday, October 16, 2007 3:35:23 PM
Subject: Re: [NV-L] Linux Suse SNMP agent issue

Sounds like a network mask issue. If you don't specify one, loadhosts will "guess", which might give you a problem like this. I'm not a big fan of loadhosts for that reason as well as others.

Is there some reason why you cannot just put the IP address at the top of the seed file and issue "netmon -y" to cause him to reread it, or ovstop/ovstart him?

James Shanks
Level 3 Support for Tivoli NetView for UNIX and Windows
Network Availability Management
Network Management - Development
Tivoli Software, IBM Corp
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10/16/2007 12:48 PM
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Re: [NV-L] Linux Suse SNMP agent issue






James,
-7.1.3 FP3
-I'm using load hosts command to add to NetView
-oid_to_type has two entries as below:
1.3.6.1.4.1.8072.3.2.10:Linux:Linux UCD-SNMP Agent:S
1.3.6.1.4.1.2021.250.10:Linux:Linux UCD-SNMP Agent:
-Let me explain - When i loadhosts a linux server, after doing a nmdemandpoll, netview reports there are duplicate IP addresses and deletes linux server. After me deleteing those duplicate addresses, i again loadhosts Linux server. this time again netview reports there are duplicate IP addresses which are different from the last time it found . This keeps going on and on when i add and delete. Wonder where and what's wrong?
Larry

----- Original Message ----
From: James Shanks <jshanks AT us.ibm DOT com>
To: Tivoli NetView Discussions <nv-l AT lists.ca.ibm DOT com>
Sent: Monday, October 15, 2007 5:54:51 PM
Subject: Re: [NV-L] Linux Suse SNMP agent issue

Sounds like apples and oranges to me Larry, but with 7.1.3 (Fixpack ??) I wouldn't know. Even FP04 shipped September 30, 2005.

And what do you mean by "manually add the node"? to the seed file? using loadhosts? which?

As for the difference between the net_snmp agent and the ucd_agent, the ucd_agent is precursor to net_snmp.
See
http://www.net-snmp.org/about/history.html

What do you have in your /usr/OV/conf/oid_to_type file for the UCD agent you are using? It should be one of these:

1.3.6.1.4.1.2021.250.10:Linux:Linux UCD-SNMP Agent:
1.3.6.1.4.1.8072.3.2.10:Linux:Linux UCD-SNMP Agent:


2021 is the IANA Enterprise number for UC Davis (so it's base for the UCD Agent's initial OID) and 8072 is for the new version, which is net-snmp.

But none of this has anything to do with duplicate IPs so far as I know. I couldn't find any record of netmon getting confused about duplicate IP addresses when discovering a UCD or net-snmp agent, but you can search the archives for yourself.

Good luck.

James Shanks
Level 3 Support for Tivoli NetView for UNIX and Windows
Network Availability Management
Network Management - Development
Tivoli Software, IBM Corp
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10/15/2007 09:59 AM


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[NV-L] Linux Suse SNMP agent issue






Hi all,
I'm having an issue to discover the Linux Suse SNMP agent into our Netview (7.1.3). When i manually add the node, it discovers and netmon deletes it right away indicating duplicate IP addresses found and in fact there are no duplicate IP's exist in database.
Has anyone experienced this issue before?
What's the difference bewteen net-snmp and ucd-snmp? Could that be a problem?
Thanks as usual,
Larry



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