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Re: Unofficial IP addresses

To: nv-l@lists.tivoli.com
Subject: Re: Unofficial IP addresses
From: Fältman, Mikael <mifal@WMDATA.COM>
Date: Wed, 10 Feb 1999 22:25:54 +0100
Reply-to: Discussion of IBM NetView and POLYCENTER Manager on NetView <NV-L@UCSBVM.UCSB.EDU>
Sender: Discussion of IBM NetView and POLYCENTER Manager on NetView <NV-L@UCSBVM.UCSB.EDU>
I must clarify one thing.
This problem is only related to topology and map handling.
For snmp-traps and syslog messages we have a separate 
distributed system that won't be affected.

> ---
> Mikael Fältman (mifal@wmdata.com)
> Network Services
> WM-data Infrastruktur AB, BOX 164, S-295 22 BROMOLLA
> 
> 
> -----Original Message-----
> From: Fältman, Mikael 
> Sent: den 10 februari 1999 19:10
> To:   'NV-L@UCSBVM.UCSB.EDU'
> Subject:      Unofficial IP addresses
> 
> 
> Until now we have had control over our customers WAN IP addressing but
> now customer after customer is converting to unofficial IP addresses.
> Since we have a centralized monitoring (NV 5.1 AIX) this is a great
> problem.
> A customers network is typically between 10-50 routers and we monitor
> about 1000 routers.
> 
> Using NAT:
> Not good. Since we have to monitor every interface on each router using
> NAT 
> will course Netview to find double interfaces on every router (the real
> and the fake) and
> the fake will ofcourse be red. This is just to hard to handle.
> 
> One Netview for each customer:
> To many operator consoles and to much NV administration.
> Also very expensive !
> 
> MLM NT:
> Can you get every customer topology into the main Netview ? (not, they
> might have same IP addresses)
> 
> Is this possible to handle and to keep topology at all ?
> 
> Is this a possibility ?
> Customer-A has 10.0.x.x addresses like Customer -B also have.
> The two customers networks are separated ofcource and have one Netview MLM
> each.
> The two NVs reports back to a central Netview. This won't work since the
> two MLMs will
> report the same IP addresses. Is it possible to tamper (via API) the IP
> addresses within
> one of the two MLMs sort of a internal MLM NAT function so that one MLM
> will report
> different IP addresses ?
> 
> I find this very hard to explain and I hope some of you understand my
> problem.
> 
> Any suggestions ?
> 
>       ---
>       Mikael Fältman (mifal@wmdata.com)
>       Network Services
>       WM-data Infrastruktur AB, BOX 164, S-295 22 BROMOLLA
> 
> 

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