[asterisk-users] Grandstream RTP keepalive packets causing Asteriskwarning

[Drew Gibson]

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] 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
>>
>>
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>>     
>
> _______________________________________________
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-- 
Drew Gibson

Systems Administrator
OANDA Corporation
416-593-6767 x322
www.oanda.com

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