[asterisk-users] Grandstream RTPkeepalive packetscausing Asteriskwarning
Drew Gibson
drew at oanda.com
Tue Jul 31 15:23:30 CDT 2007
Thanks Steve,
I'll keep digging,
regards,
Drew
Steve Langstaff wrote:
> Sorry Drew - I don't know enough about Asterisk to comment on the
> effects of this on the RTP stack.
>
> *From:* asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] *On Behalf Of
> *Drew Gibson
> *Sent:* 31 July 2007 15:02
> *To:* Asterisk Users Mailing List - Non-Commercial Discussion
> *Subject:* Re: [asterisk-users] Grandstream RTPkeepalive
> packetscausing Asteriskwarning
>
> Thanks Steve,
>
> am I correct in assuming that Asterisk will ignore this packet? It
> will not have any harmful effect if the caller is on hold for an
> hour (120 packets)?
>
> In order to feed back to Grandstream, is there a "correct" format
> for a keepalive message or is this one adequate?
>
> regards,
>
> Drew
>
>
>
> Steve Langstaff wrote:
>> Your Grandstream device is using a UDP message of 8 x 0x00 bytes
>> as it's RTP keepalive message.
>>
>> When Asterisk tries to read this it logs a warning because it is
>> expecting a valid RTP packet.
>>
>> *From:* asterisk-users-bounces at lists.digium.com
>> <mailto:asterisk-users-bounces at lists.digium.com>
>> [mailto:asterisk-users-bounces at lists.digium.com] *On Behalf
>> Of *Drew Gibson
>> *Sent:* 30 July 2007 19:55
>> *To:* Asterisk Users Mailing List - Non-Commercial Discussion
>> *Subject:* Re: [asterisk-users] Grandstream RTP keepalive
>> packetscausing Asteriskwarning
>>
>> Hi Steve,
>>
>> The following packets match the offending warnings on the *
>> console by time and number of occurrences and . The SRC and
>> DST ports vary between calls (naturally) but the rest remains
>> the same.
>>
>>
>> Frame 3 (60 bytes on wire, 60 bytes captured)
>> Ethernet II, Src: Grandstr_0b:a5:3e (00:0b:82:0b:a5:3e), Dst:
>> Dell_3e:05:ac (00:13:72:3e:05:ac)
>> Internet Protocol, Src: 10.1.10.184 (10.1.10.184), Dst:
>> 10.1.10.1 (10.1.10.1)
>> User Datagram Protocol, Src Port: avt-profile-1 (5004), Dst
>> Port: 13608 (13608)
>> Source port: avt-profile-1 (5004)
>> Destination port: 13608 (13608)
>> Length: 16
>> Checksum: 0x8e5f [correct]
>> Data (8 bytes)
>>
>> Data is 8 x null (00)
>>
>> regards,
>>
>> Drew
>>
>>
>>
>> Steve Langstaff wrote:
>>> Grab a network trace (with e.g. Wireshark) and look at the payload type
>>> and lengths of the RTP keepalive messages - if you post this information
>>> to the list I'm sure someone will comment on what's happening.
>>>
>>>
>>>> -----Original Message-----
>>>> From: asterisk-users-bounces at lists.digium.com <mailto:asterisk-users-bounces at lists.digium.com>
>>>> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of
>>>> Drew Gibson
>>>> Sent: 26 July 2007 19:23
>>>> To: Asterisk Users Mailing List - Non-Commercial Discussion
>>>> Subject: [asterisk-users] Grandstream RTP keepalive packets
>>>> causing Asteriskwarning
>>>>
>>>> Grandstream GXP-2000 with firmware 1.1.4.18 (beta) fixes an
>>>> issue where the phone did not send rtp keepalives when on
>>>> mute (resulting in disconnect from tech support hold and concalls)
>>>>
>>>> A side effect seems to be that Asterisk pops the following
>>>> warning on the console...
>>>>
>>>> Jul 26 14:06:35 WARNING[31654]: rtp.c:463 ast_rtp_read: RTP
>>>> Read too short
>>>>
>>>> Grandstream say they are not sure what it is but "it should
>>>> not affect anything".
>>>>
>>>> In other words, "Don't worry, be happy!".
>>>>
>>>> Any thoughts/experience on this?
>>>>
>>>> regards,
>>>>
>>>> Drew
>>>>
>>>> --
>>>> Drew Gibson
>>>>
>>>> Systems Administrator
>>>> OANDA Corporation
>>>> 416-593-6767 x322
>>>> www.oanda.com <http://www.oanda.com>
>>>>
>>>>
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>>>>
>>> _______________________________________________
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>>
>>
>> --
>> Drew Gibson
>>
>> Systems Administrator
>> OANDA Corporation
>> 416-593-6767 x322
>> www.oanda.com <http://www.oanda.com>
>>
>>
>>
>> _______________________________________________
>> --Bandwidth and Colocation Provided by http://www.api-digital.com--
>>
>> asterisk-users mailing list
>> To UNSUBSCRIBE or update options visit:
>> http://lists.digium.com/mailman/listinfo/asterisk-users
>
>
> --
> Drew Gibson
>
> Systems Administrator
> OANDA Corporation
> 416-593-6767 x322
> www.oanda.com <http://www.oanda.com>
>
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> --Bandwidth and Colocation Provided by http://www.api-digital.com--
>
> asterisk-users mailing list
> To UNSUBSCRIBE or update options visit:
> http://lists.digium.com/mailman/listinfo/asterisk-users
--
Drew Gibson
Systems Administrator
OANDA Corporation
416-593-6767 x322
www.oanda.com
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