Re: [Discuss-gnuradio] tunnel.py destination host unreachable

[Alex Zhang]

Most likely you did not set the freq and gain properly.  Unstable physical layer communications cause the ARP routing failure.

Please use different frequencies for tx and rx. 

On Thu, Jun 14, 2012 at 1:51 PM, Weixian Zhou <address@hidden> wrote:

I was testing with tunnel.py and following the instructions in README located in gnuradio/gr-digital/examples/narrwoband. 

I found that when I input ifconfig gr0 192.168.200.1 on machine A, and input ifconfig gr0 192.168.200.2 on machine B at the same time, both machines showed Tx and Rx packages.

But when I ping 192.168.200.2 from machine A ( or ping 192.168.200.1 from machine B respectively), one window of machine A only showed Tx packages and another window showed "Destination Host Unreachable". Machine B showed both Rx/Tx packages.

It means that machine B can successfully received packages from machine A but A failed to receive replied packages from machine B. It confused me that the packages tx/rx were succeed before the ping. Anyone has idea?

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Regards,

Weixian Zhou

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Alex,

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