Re: [Discuss-gnuradio] [USRP-users] about the tunnel.py

[Josh Blum]

On 07/11/2012 08:57 PM, CHAO DONG wrote:
> Dear all,
> 
>        I am testing tunnel.py in the narrowband folder, the
> configuration is as follows:
> OS: ubuntu 11.10
> Gnuradio: latest
> UHD:latest
> USRP 1
> RFX400
> 
>     I set up two machines and do following the readme step by step.
> When i ping machine B from A, A shows it has sent the ARP request, but
> no ARP reply received.
> In fact, B did not receive the ARP request at all.
> 
>    I use benchmark_rx and benchmark_tx to test the channel, it is ok.
> 
>    And when i use: sudo ifconfig gr0 192.168.200.1 on A, B can receive
> the IGMP packet from the gr0 of A. This show the gr0 on A and B is ok
> for IGMP protocol.
> 
>     Welcome any comments!
> 

I recall a similar discussion, and one simple solution was to use a
different frequency for each communication channel.

So for communication between A -> B use frequencyX
and for communication B -> A use frequencyY.

I hope that helps!
-josh