So, there is no way we can get router's IP address table using net-snmp? 

-----Original Message-----
From: Peter Hicks [mailto:[email protected]] 
Sent: Wednesday, March 04, 2009 1:05 PM
To: Sathyanarayana Murthy, Harish Kolar
Cc: [email protected]
Subject: Re: FW: net-snmp for network discovery

Sathyanarayana Murthy, Harish Kolar wrote:

> I learnt that there is a optimized approach for discovering nodes in a 
> network using SNMP. Getting the node details from the router or 
> something like that, instead of incrementing each IP and getting its status.
>  
> Could anybody share some thoughts on this?

This is where you poll a 'seed' router (normally a default gateway), look at 
the ifTable, atTable and ipAddrTable, then poll each host in turn.

This won't pick up hosts that aren't actively communicating, but is a quick way 
to build up information on a network without scanning every possible IP address.

Net-SNMP won't discover your network, but you can use the perl library for 
example to write code to do this.


Peter

-- 
Peter Hicks | e: [email protected] | g: 0x5DA31330 | w: www.poggs.com

   A: Because it destroys the flow of the conversation
   Q: Why is top-posting bad?

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