Hi Jeff,
Thanks for your reply.

when i try mii-tool i am getting following output

 sudo mii-tool -v eth0
SIOCGMIIREG on eth0 failed: Input/output error
SIOCGMIIREG on eth0 failed: Input/output error
eth0: negotiated 1000baseT-FD flow-control, link ok
  product info: vendor 00:55:00, model 9 rev 0

  basic mode:   autonegotiation enabled
  basic status: autonegotiation complete, link ok
  capabilities: 1000baseT-FD 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD

  advertising:  1000baseT-HD 1000baseT-FD 100baseTx-FD 100baseTx-HD
10baseT-FD 10baseT-HD flow-control
  link partner: 1000baseT-FD 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD


What does it show.Is it running at wrong speed.If yes then how do i change
it.

Why am i getting this error "SIOCGMIIREG on eth0 failed: Input/output error"

What do you mean by direct connection?

Thanks.





On Tue, Mar 19, 2013 at 3:12 PM, Jeff Scaparra <[email protected]> wrote:

> One thing it to ensure that your card is running at gigabit speed and
> not auto-negotiated to 10/100 and not 1000. Since your on linux you could
> run iftop and watch the connection speed. You can also verify the speed
> with mii-tool. My interface is called enp7s0:
>
>
>
> [scap@Jupiter ~]$ sudo mii-tool -v enp7s0
>
>
>
> enp7s0: negotiated 1000baseT-FD flow-control, link ok
>
>
>   product info: vendor 00:07:32, model 17 rev 4
>
>
>   basic mode:   autonegotiation enabled
>
>
>   basic status: autonegotiation complete, link ok
>
>
>   capabilities: 1000baseT-HD 1000baseT-FD 100baseTx-FD 100baseTx-HD
> 10baseT-FD 10baseT-HD
>
>   advertising:  1000baseT-HD 1000baseT-FD 100baseTx-FD 100baseTx-HD
> 10baseT-FD 10baseT-HD flow-control
>
>   link partner: 1000baseT-FD 100baseTx-FD 100baseTx-HD 10baseT-FD
> 10baseT-HD flow-control
>
> If your interface is running at the wrong speed you may want to try a
> direct connection to the USRP, a new cable, or worse case a new network
> card.
>
> Best of luck,
>
> Jeff N6SDR
>
>
> On Tue, Mar 19, 2013 at 12:30 AM, john jade <[email protected]>wrote:
>
>> Hi,
>>
>> I am getting overflow error ,even at low sampling rates.I am using USRP
>> N210 device.If the sampling rate is less than 5MHz then there is no error.I
>> know that USRP N210 can support at Max 25MHz.Can you please tell me what
>> might be the problem?
>>
>> I just connected UHD source block to FFT sink in my example.
>>
>> My system specifications.
>>
>> OS :Ubuntu 12.10
>> processor :Intel  Core i5-3570 CPU @ 3.40GHz × 4
>> RAM 4GB
>>
>> I am using 1Gbit Ethernet card.
>>
>>
>> Thanks
>>
>> _______________________________________________
>> Discuss-gnuradio mailing list
>> [email protected]
>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>>
>>
>
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