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Patrik Lahti
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Re: Multicast packets are not received via tsec interfaces.
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Patrik Lahti
01/25/2010 10:24 AM
post45863
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Re: Multicast packets are not received via tsec interfaces.
On 25/01/10 12:27 AM, Ganesh Kumar wrote:
> Hi Patrik,
>
> Running the tcpdump causes the driver to switch to
> promiscuous mode and you will start receiving all the multicast
> packets also.
>
Yes, of course, that's how tcpdump functions.
The purpose was to help you by looking at the packets you were sending
to the interface and not receiving - i.e. it doesn't matter that this
disturbs the test, it is the simplest way of looking at the packets on
the wire. By knowing what the packets look like I can instruct you how
to proceed debugging this further.
> So it would be better to run any application like ping6 which uses
> Multicast packets, like
>
None of these methods show what the actual packets look like on the wire.
> 1. Using mclisten and mcping which the QA team uses (I have not used it
> though).
> 2. Use the ping6 ICMPv6 neighbour solicitation, if you have an IPv6
> address
> setup with io-pkt-v6-hc. This worked for me on the P2020DS board.
>
ping6 doesn't send neighbor solicitations. The stack does that while
resolving the link layer address for the packets that it sends (which it
sends on behalf of ping6 in this case).
> And then look into the nicinfo and ifconfig -v.
>
> For me Andrew's network driver devnp-mpc85xx.so worked, as I was also
> facing the same multicast problem with P2020DS board.
>
Please see Andrew's post this morning.
/P
> --Ganesh
>
> -----Original Message-----
> From: Patrik Lahti [mailto:community-noreply@qnx.com]
> Sent: Friday, January 22, 2010 7:56 PM
> To: drivers-networking
> Subject: Re: Multicast packets are not received via tsec interfaces.
>
> Hi Janani,
>
> Do you have a packet capture from the node running io-pkt? (use tcpdump
> -itsec1 -s0 -w filename.pcap)
>
> /P
>
> On 22/01/10 07:31 AM, Janani K wrote:
>
>> Hi Andrew,
>>
>> I have downloaded the mpc85xx driver from
>>
> www.PoweredByQNX.com/etc/devnp-mpc85xx.so
>
>> Still i m not able to get multicast packets from tsec interfaces.
>>
>> I have done the following steps
>> ===================
>> 1.slay io-pkt-v4-hc
>> 2.io-pkt-v4-hc -dmpc85xx mac=01 /home/devnp-mpc85xx.so
>> 3.Send a multicast packets from IXIA(traffic generator) to tsec1.
>> 4.I can see via ' nicinfo tsec1' but not via ' ifconfig -v tsec1 '
>>
>> Please let me know any updates available.
>>
>> Thanks and Regards
>> Janani
>>
>>
>>
>> _______________________________________________
>>
>> Networking Drivers
>> http://community.qnx.com/sf/go/post45750
>>
>>
>>
>
>
>
> _______________________________________________
>
> Networking Drivers
> http://community.qnx.com/sf/go/post45766
>
>
>
>
> _______________________________________________
>
> Networking Drivers
> http://community.qnx.com/sf/go/post45835
>
>
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