Re: [nv-l] Same IP addresses on different boxes.

[Gareth Holl <gholl@us.ibm.com>]

You won't be able to have both devices on the map at the same time. NetView does not support duplicate IP addresses. I would suggest you use CNAT to perform header and payload translation for one of the duplicate subnets - you would be translating the IPaddresses to a set of addresses not currently in use by the network your NetView server resides on.

Gareth Holl
Staff Software Engineer
gholl@us.ibm.com

IBM Software Group - Tivoli Brand
Research Triangle Park,  North Carolina.

bernard.baudoux@fortisbank.com 03/14/2003 10:29 AM

To:        "'nv-l@lists.tivoli.com'" <nv-l@lists.tivoli.com>         cc:                 Subject:        [nv-l] Same IP addresses on different boxes.

Hello forumers,

Netview 7.1.2 on AIX 4.3.3 ML09

I have received a weird request from our net architecture staff.   They want to setup routers in different countries with the same subnets (and even same addresses) on their interfaces.   Those subnets would not be routed in the entire network, only locally so that on a strict routing point of view that's no problem.

Our Netview box would have access to a dedicated loopback address on each router for management purposes.   I know if Netview has access to a given address on a router, it discovers every other addresses on it.   This is what they want : Netview must manage ALL interfaces (through SNMP polling) and must report any failing interface.

My problem is that I wonder how netmon will react with all those duplicate addresses.   I may not unmanage anything or else netmon will not poll them anymore.

Anyone any idea on how I can do this ??  Any suggestion most appreciated.

Bernard Baudoux.
4932 Application Networking / Network Management
Telecommunication / 1GA2H
Fortis Banque
Tel : +32 (0)2 565 24 68
Fax : +32 (0)2 228 83 69
bernard.baudoux@fortisbank.com




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#### C.DTF has been removed from this note on March 14, 2003 by Gareth Holl