RE: [nv-l]Private Interfaces and Duplicate IP addresses

[James Shanks <jshanks@us.ibm.com>]

NetView ships its own version of NAT, CNAT, with the product.  It's on one
of the CDs.  CNAT goes NAT one better, because it will also translate IP
addresses inside SNMP packets.

Hope this helps.

James Shanks
Level 3 Support  for Tivoli NetView for UNIX and Windows
Tivoli Software / IBM Software Group


                                                                           
             "Glen Warn"                                                   
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                                       RE: [nv-l]Private Interfaces and    
             03/09/2006 04:24          Duplicate IP addresses              
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Hi Scott,

We have certain situations where this is the case for us too (typically
behind firewalls)  In our case, we either used NAT on a router or firewall
to advertise the duplicated address as something unique to netview– or set
the duplicate address to permanently unmanaged (per advice from another
user – see below) and then use snmp status checking instead (on a uniquely
addressed interface also on that device)

Hope this helps,
Glen

From: owner-nv-l@lists.us.ibm.com [mailto:owner-nv-l@lists.us.ibm.com]
On Behalf Of Paul
Sent: Thursday, May 12, 2005 9:28 AM
To: nv-l@lists.us.ibm.com
Subject: Re: [nv-l] How to permanently set nodes to unmanged state

Glen,
If its a range of addresses you can add something like this to the
seedfile:

!10.10.10.25-200 #Workstations

Or something like that. Im not sure how the "limit discovery" puts it
in the seedfile off the top of my head.

Paul





From: owner-nv-l@lists.us.ibm.com [mailto:owner-nv-l@lists.us.ibm.com] On
Behalf Of Bursik, Scott {PBSG}
Sent: Thursday, March 09, 2006 12:01 PM
To: nv-l@lists.us.ibm.com
Subject: [nv-l]Private Interfaces and Duplicate IP addresses

NetView 7.1.4 AIX 5.2

We have a very large environment and we are running into problems with
duplicate IP addresses on private networks that are being discovered by
NetView through SNMP. Addresses like 192.168.1.x and 10.10.10.x are being
used in several areas and causing trouble with Node Down events because of
the duplication of addresses.

I was wondering what the community is doing to combat this issue? We have
been making the teams readdress the private networks using NetView as the
authoritative source for what private addresses are being used but I was
wondering if there is a better way to manage these interfaces?

Thanks!

Scott Bursik
PepsiCo