Re: [Sipp-users] RTP echo usage in stress testing

[Rich F. <rmf...@gm...>]

Thanks Patrick, that certainly did the trick.

However, what I am observing now is that the SIPp UAS is only echoing the
RTP packets from the first call.  RTP packets from subsequent calls are
sent from the UAC to the correct port as advertised by the UAS, and
received on the UAS interface, but not echoed back.  Bug or limitation?

- Rich

On Thu, Jul 19, 2012 at 11:39 AM, Patrick Wakano <pw...@gm...> wrote:

> There is an [auto_media_port] keyword. If you are using it in your script,
> the media port is incremented for each call, avoiding SIPp to use the same
> IP/port for multiple calls, which would cause an error when opening the
> socket.
> The use of the [auto_media_port] keyword should work no matter the
> transport option you use.
>
>
> On Wed, Jul 18, 2012 at 3:42 PM, Rich Fought <rmf...@gm...> wrote:
>
>> Hello,
>>
>> I'm trying to use sipp to run a stress test on a SIP ALG using sipp on
>> both the client and server side, with signalling and media traffic passing
>> through the ALG.
>>
>> Here's the scenario I'm using:
>>
>> - Simple Call Sequence with RTP stream from client
>> - RTP Echo enabled on the server side
>> - UDP multi-socket mode (-t un)
>> - Maximum of 10 simultaneous calls. (-l 10)
>> - Media ports/interfaces specified for both client and server (-mi and
>> -mp)
>>
>> i.e.
>>
>> Client:
>> sipp -sf uac.xml -t un -l 10 -i <client ip> -mi <client ip> -mp
>> <client_port> <server ip>
>>
>> Server:
>> sipp -sf uas.xml -t un -m 1000 -l 10 -i <server ip> -mp <server_port> -mi
>> <server_ip> -rtp_echo
>>
>> What I'm curious about is the validity of multiple simultaneous calls
>> using the same media port.  Is there a valid SIP scenario (say, for
>> conference calling) where two separate calls would actually advertise the
>> same media port?
>>
>> I'm thinking that uac,xml and uas.xml should be incrementing the
>> media_port value with each unique call ID, since by specifying a new port
>> for each call with the -t un flag I am saying that each client is unique.
>>
>> Thoughts?
>>
>> Regards,
>> Rich
>>
>>
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>