[snmp] Auto-discovery

[Josh Bers]

Yes, there is a way to do this for subnet mask (2)

There is a special PDU that can be used just for this kind of application.
It is called a multi-response PDU. It expects that many different hosts will
respond to a single request and it accumulates the responses along with the
source ip addresses. An observer will get updated each time that a response
comes in and the timeout controls how long it waits for responses. The trick
is to send it to a broadcast address, e.g., the network broadcast. So create
a context with the network broadcast as the target IP address and then send
a MultiResponsePdu on it. (needs latest stack 5.1).

Josh

Josh Bers
Mobile Networking Systems
BBN Technologies
jbers at bbn.com
ph. 617.873.4262
fax. 617.873.4523
www.bbn.com


> -----Original Message-----
> From: snmp-bounces at snmp.westhawk.co.uk 
> [mailto:snmp-bounces at snmp.westhawk.co.uk] On Behalf Of tausif
> Sent: Wednesday, October 04, 2006 5:23 AM
> To: List for discussion of the Westhawk SNMP stack
> Subject: [snmp] Auto-discovery
> 
> 
> 
> I am trying to make application which automatically should 
> discover all the devices in the LAN. I need to discover the 
> devices based on 
> 
> 1. range of IPs
> 2. Subnet Mask
> 3 Default gateway.
> 
> is there any way of doing the auto-discovery using westhak 
> APIs? is there any sample example for the same? if not, is 
> there any way of doing it? Actually i m kind of avoid doing 
> PING first and then send SNMP request. There must be some 
> other way right? 
> 
> Can I make use of DatagramPacket / DatagramSocket? if any one 
> having sample code will be a great help
> 
> thanks
> _______________________________________________
> snmp mailing list
> snmp at snmp.westhawk.co.uk 
> http://snmp.westhawk.co.uk/mailman/listinfo/snmp
>