[PlanetCCRMA] data over local network

[David Nielson]

On 05/10/2010 09:00 AM, Oded Ben-Tal wrote:
> hi,
> thanks for the reply and appologies for being a bit slow. But how do I
> assign the ip addresses? We are connecting via a hub (not router) and the
> mac (and my laptop under windows) gets an ip address somehow from the hub
> with the first 2 numbers shared - i.e. mac had 169.256.x.y win had
> 169.256.z.q
> I think once I get to the successful ping stage we should be fine - we
> managed to get OSC messages across with udpsend/receive between max and
> pd.
>
> thanks
> Oded
>    
The addresses which start with 169.256 are not real IP 
addresses--Windows and OS X generate them internally and then flip an 
internal switch that says "don't even try to connect to the outside 
world." Getting OSC through under these circumstances is impressive; you 
shouldn't have been able to.

You will need to either (a) assign static IP addresses, which you can do 
using NetworkManager on Linux and I don't know how to do it on OS X, or 
(b) have a third computer in your network that acts as a DHCP server and 
assigns IP addresses in a sane way.

When you say "hub," do you mean "hub" or "switching hub" or "switch"? 
(The last two are basically the same thing.)

If you're going to be sending data back and forth over a network, you 
really will need to understand networking better. Don't take this as an 
RTFM even though that's basically what I'm saying, but get on Wikipedia 
at least and read these articles plus whatever else you need to read 
until you understand more fully what's going on with your network:

http://en.wikipedia.org/wiki/OSI_model
http://en.wikipedia.org/wiki/Internet_Protocol_Suite
http://en.wikipedia.org/wiki/IP_address
http://en.wikipedia.org/wiki/Dynamic_Host_Configuration_Protocol
http://en.wikipedia.org/wiki/Open_Sound_Control

Good luck!

David