I am doing test with tunnel.py and following the readme instructions located gnuradio/gr-digital/examples/narrowband. on machine A: *sudo ./tunnel.py --tx-freq=2.51G --rx-freq=2.515G -c 50 -r 0.5M* then *sudo ifconfig gr0 192.168.200.1*
on machine B: *sudo ./tunnel.py --tx-freq=2.515G --rx-freq=2.51G -c 50 -r 0.5M* then *sudo ifconfig gr0 192.168.200.2* Then I can see packages tx/rx on both machines: *URx: ok = True len(payload) = 54* *Rx: ok = True len(payload) = 90* *Rx: ok = True len(payload) = 353* *Tx: len(payload) = 90* *Tx: len(payload) = 54* *...* After I ping from A to B, I found A only sends packages of fixed size 42: *UTx: len(payload) = 42* *UTx: len(payload) = 42* *UTx: len(payload) = 42* *UTx: len(payload) = 42* ... But the default package size of ping is 56 from the man page. Where did the packages of size 42 come from? Anyone has idea? I am using two USRP N210s, the daughter boards are both XCVR2450. -- Regards, Weixian Zhou
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