Finding devices with dynamic IP addresses

Finding devices with dynamic IP addresses

[Edward Jubenville]

I hope this isn't off topic here...

My network will contain several ELDK-based devices configured with dynamic
IP addresses (DHCP).  I need a way for any Windows PC on the subnet to
locate the devices without prior knowledge of their IP address.  I'm hoping
to find a peer-to-peer
solution that doesn't involve a third party (DNS) server.

Can anyone recommend a strategy for finding devices with dynamic IPs?

I'm using ELDK 3.1 on a custom MPC5200-based board.

Thanks,

Ed Jubenville

RE: Finding devices with dynamic IP addresses

[Eric Nuckols]

>From: "Edward Jubenville" <edjubenville@adelphia.net>
>I hope this isn't off topic here...
>
>My network will contain several ELDK-based devices configured with dynamic
>IP addresses (DHCP).  I need a way for any Windows PC on the subnet to
>locate the devices without prior knowledge of their IP address.  I'm hoping
>to find a peer-to-peer
>solution that doesn't involve a third party (DNS) server.


not sure if you can do a broadcast ping and look at the arp info on 
windows..but if I were to do this in linux, I'd do something like the 
following

ping -b 255.255.255.255

CTRL-C after a few seconds

then

arp

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Re: Finding devices with dynamic IP addresses

[Wolfgang Denk]

In message <GPECLCIGPLHEOMGPMCPACELEEGAA.edjubenville@adelphia.net> you wrote:
> 
> My network will contain several ELDK-based devices configured with dynamic
> IP addresses (DHCP).  I need a way for any Windows PC on the subnet to
> locate the devices without prior knowledge of their IP address.  I'm hoping
> to find a peer-to-peer
> solution that doesn't involve a third party (DNS) server.

Assign names and use a name server?

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH, HRB 165235 Munich, CEO: Wolfgang Denk
Office:  Kirchenstr. 5,       D-82194 Groebenzell,            Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de
"Ada is PL/I trying to be Smalltalk.                 - Codoso diBlini

RE: Finding devices with dynamic IP addresses

[Rune Torgersen]

> From: Edward Jubenville
> Can anyone recommend a strategy for finding devices with dynamic IPs?

To do somehting similar here, we use a scheme were the windows host
sends out a UDP broadcast message, and all the devices have daemon
running, listening to that broadcast, and sends back (via broadcast) a
response with the IP address and serial number embedded.

We use this to identify all running devices on the network.
This only works within the same subnet.