Thank u, Robert. They can see one another now. 
You said more resilient and faster, how specific the difference of performance between them?

> Hi Alex:
> 
> 	6.3.x uses a new, faster and more resilient version of qnet that is
> incompatible with 6.2.1.  If you want the 6.2.1 machines to see 6.3.2, you
> have to use npm-qnet-compat.so rather than npm-qnet-l4_lite.so on the 6.3.2
> machine (npm-qnet.so is simply a link to npm-qnet-l4_lite.so by default).
> 
> Just to let you know, npm-compat will be deprecated in the next release of
> networking (it isn't available for io-pkt).
> 
> 	Robert.
> 
> -----Original Message-----
> From: Alex Doherty [mailto:dohertytek@gmail.com] 
> Sent: Friday, February 29, 2008 10:34 AM
> To: technology-networking
> Subject: qnet problem under the 6.2.1 and 6.3.2
> 
> I have 3 machines with two 6.2.1 and one 6.3.2.
> Under /net, and two 6.2.1 machines can see each other, while 6.3.2 can only
> see itself. All of them are in a switch network and can surf the web. What's
> the problem here?
> Thank u.
> 
> _______________________________________________
> Technology
> http://community.qnx.com/sf/go/post5410