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Hello all member of this wonderfull forum!
And especially – alcatel gurus 😉Could you please explaine the meaning of one particular parameter – PDU_lifetime_ordering?
Because the dictionary in OMC-R says that it depends on SGSN’s behaviour – it changes PDU_lifetime value in accepceptable or NOT acceptable manner…
as for me very ambiguous explanationCould you please help me with it?
Many thanks in advance
hi,
here is the actual recommendation:
PDU_LIFETIME_ORDER
Should be set to “ordering disabled”, when the MFS interfaces with :
– an Ericsson SGSN
– or any SGSN modifying the PDU Lifetime value (during data flows addressed to the same MS on the same LLC SAPI) in a non-acceptable manner–> otherwise should be set to “ordering enabled”.
By default, it is ENABLED.
It is not changeable, except internally, by ALU teams.Basically, there is no reason for not wanting to re-order the PDUs before sending them to the MS, except when interfacing with specific SGSN. This parameter was probably used to improve compatibility with *old* SGSN, in the past.
Regards
pixPix, thank you very much for such a quick and detailed answer!
just some more moments – if you please:
– how does SGSN change lifetime of PDU – like router in the LAN?
– as far as i understand if we set this parameter = enable we can *save* some PDU because thanks to the process of ordering PDUs with smaller lifetime will be sent earlier than the ones with bigger lifetime? – is it right?Thanks you very much once more
p1988,
You are asking interestng questions, but unfortunately I am not able to answer them. This mechanism (the pdu ordering) is not described in the documents I have.
Sorry…
Do you have a specific problem in your network, or is it just a general inquiry ?
Regards
pixHello, Pix!
In any case – thank you for your attention and help.
As I see you are the heart of this forum, i saw not many threads without your participation.About PDU lifetime ordering – it’s because we got a recommendation from Alcatel TAC to disable it as response to our FR (spontaneous reset of GPUs beacuse of internal bufer overload).
So i wanted to undersand the purpose of this action and the most important thing – possible consequences. My opinion now – it’s better not to touch 🙂…. and problems come faster than i can solve them :))) just got a new one from my bosss – MC02d event….
i feel that soon i’ll tired all of you herehave a nice day!!
and thank you once more
