RE: [nv-l] Managing routers with duplicated IP address

[Oliver Bruchhaeuser <oliver.bruchhaeuser@de.ibm.com>]

the %-entries in the seefile will frist
become active after a netmon restart.
A "netmon -y" only will not
do the job.

You may also want to play with the netmon
option in /usr/OV/conf/netmon.conf:
----
# Set to TRUE to report duplicate IP
addresses, don't remove them.
NV_NETMON_REPORT_DUP_ADDRS_ONLY=TRUE
----

Oliver

"Gerardo Ruiz Garcia" <gerardo_ruiz@inicia.es>
Sent by: owner-nv-l@lists.us.ibm.com

23.04.2004 09:13

Please respond to
nv-l

To	nv-l@lists.us.ibm.com
cc
Subject	RE: [nv-l] Managing routers with duplicated IP address

I have the same problem with the WAN conexions Frame_Relay.
The configuration
of a duplicate IP addess in two routers is for CVP+ feature implemented
for backup reason. In this way if a conexion fails other router with the
same IP addess configured takes the control. Both IP are Admin Up. The
topology
map doesn´t r show the right situation, sometimes the conexjon is in one
router and sometimes in the other one, depens of teh demandpool secuence.
I have try HSRP feature and doen`t work.

>-- Mensaje Original --
>From: "Evans, Bill" <Bill.Evans@hq.doe.gov>
>To: "'nv-l@lists.us.ibm.com'" <nv-l@lists.us.ibm.com>
>Subject: RE: [nv-l] Managing routers with duplicated IP address
>Date: Thu, 22 Apr 2004 16:32:43 -0400
>Reply-To: nv-l@lists.us.ibm.com
>
>
>Yes, it's possible.  It's absolute necessary with the HSRP support.
This
is
from /usr/OV/conf/netmon.seed.

#    Hot Standby Routing Protocol (HSRP) Support
#
#      HSRP interfaces may be specified here for netmon
to acknowledge them.
#      Onl
> the public IP address need be entered.  
#
#      Use the prefix '%', and use the same syntax for ranges
and wildcards
#      described above for positive seed entries.  For
instance, if 1.1.1.1

#      is the IP address of the HSRP interface that
>switches between two 
#      routers, enter,
#
#         %1.1.1.1

Other reasons may exist for doing so and NV can handle accidental duplicate
interface adddresses on routers but it doesn't like it.  It definitely
won't
handle routers whose prim
>ry interface addresses are duplicated; as you've
seen it will delete one of them.  To give you a better answer we need
to
know why there are duplicate addresses.  The solution may be to use
CNAT
 or
it may be to identify the devices as HSRP or it ma
> be simply to clean up
your network interface definitions. 

If you search the archives for this mailing list you will see a few cases
where the HSRP support is used to handle duplicate IF addresses present
for
other reasons.   

You simply have
>'t given enough information for anyone to send an
intelligent answer.  Why do your routers have duplicate addresses?
 

Bill Evans
Tivoli NetView Support for DOE 
301-903-0057


-----Original Message-----
From: Marcos Antonio Pezzutti Filho [m
>ilto:pezzutti@banespa.com.br] 
Sent: Thursday, April 22, 2004 3:58 PM
To: 'nv-l@lists.tivoli.com'
Subject: [nv-l] Managing routers with duplicated IP address


Dear friends,

Our Environment:

AIX 4.3.3 ML-10
Tivoli Netview 7.1.4
Tivoli Fra
>ework 3.7.1
ITEC 3.9

We´d like to know if it´s possible to manage a router with an IP address
duplicated on another router ?

Thanks in advance

Marcos Antonio Pezzutti Filho
Santander Banespa - Infra-Multiplataforma
* Fone: 5854-6339 * Fax:
>5538-5260
pezzutti@banespa.com.br <mailto:pezzutti@banespa.com.br>





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