paralell multipart sms not working

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Holger Hans Peter Freyther holger at freyther.de
Tue Nov 29 20:34:34 UTC 2011


On 11/28/2011 04:11 PM, Dennis Wehrle wrote:
> Hi
> 
> Today i had a closer look at the abis pcap file (which i sent on Friday). For
> me one thing is "strange" but i don't know if this is a normal behavior. Is it
> OK that sometimes a packet contains 2 sub-packets? For instance:

this is valid behavior (and you see it during RSL/OML bring up), one thing how
this can break (and would break OpenBSC/libosmo-abis) is that we do:

	1.) ipa_header = recv(3 bytes)
	2.) data = recv(ipa_header->len)

this would fail in case header and data do not appear on the same frame. So
the esoteric question is do you have MTU changes in your network (this assumes
that the ipaccess would have similar broken code we have)?

holger




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