[linux-dvb] Re: problem with multicast satellite network

[segarral@free.fr]

Hi,

you can add the option: 'dvb_shutdown_timeout=0' when you
load the driver,
or use 'dvbtune -m ...' and, with another terminal,
you can use tcpdump.

PS:
I tried today with:
 EUTELSAT W1
 linuxtv-dvb-1.1.1
 kernel 2.4.21, (suse 9.0)
 Hauppauge DVB-S budget card.
 Freq: 11473MHz SR: 33300000 P: V

but I wasn't able to make the 'Bit error rate ' go
down to 0. So, I miss some IP datagrams.
It seems strange!

Matt, could you send your command line and a snapshot
of your screen (for 'dvbtune -m' and 'tcpdump') ?

Best Regards,

ludovic





Selon Matt Jarvis <matt@rolec.ltd.uk>:

> Hi
>
> I'm doing some testing trying to receive multicast
> network packets from
> EUTELSAT W1. I'm using linuxtv-dvb-1.1.1 with kernel
> 2.4.25, and a
> Hauppauge DVB-S budget card. The drivers work fine, and I
> can setup the
> network interface using dvbtune. I get lock, and all
> looks fine with the
> connection :
>
> Getting frontend event
> FE_STATUS: FE_HAS_SIGNAL FE_HAS_LOCK FE_HAS_CARRIER
> FE_HAS_VITERBI
> FE_HAS_SYNC
> Event:  Frequency: 11472728
>          SymbolRate: 33300000
>          FEC_inner:  2
>
> Bit error rate: 65280
> Signal strength: 40963
> SNR: 55197
> FE_STATUS: FE_HAS_SIGNAL FE_HAS_LOCK FE_HAS_CARRIER
> FE_HAS_VITERBI
> FE_HAS_SYNC
>
> I can see the satellite and scan it for services, which
> all appears to
> work correctly. So then I setup the interface, giving it
> IP address and
> MAC address.
>
> Then I run tcpdump on the interface, and see multicast
> packets for about
> ten seconds, then they stop. If I run dvbtune again they
> start again,
> then stop again, and so on.
>
> Am I doing something wrong here ?
>
>
> Best Wishes
>
> Matt
>
>
>


--