Fault Handling Experience: RAB Assignment Failure during Sseesion management

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selim.hasan   钻石会员    发表于 2014-9-20 14:32:31   最新回复:2018-05-30 13:44:02

Fault symptom:

The trace result shows that the SGSN sends the Activate PDP Context Reject message carrying the
0x1F cause value "Activation rejected, Protocol error unspecified" after the RNC returns the RAB Assignment Response message.


Troubleshooting:
 
1.Check the QoS in the RAB assignment request delivered by the SGSN in the signaling trace task. Then, check the percentage of the optional RAB bandwidth to the bandwidth of the
first RAB that is set in the 
SET IUSM command. Based on the QoS delivered by the SGSN and the percentage, check whether the RNC supports the QoS.

1.1 Run SET IUSM to adjust the optional RAB bandwidth range of the RNC.
 
1.2 Enable RAB assignment and QoS auto-negotiation and set the negotiable QoS
rate.
 
 
2.Run PING IP to check the user-plane IP connections between the SGSN and the RNC.
 If the user-plane IP connections between the SGSN and the RNC fail, add the corresponding routes on the SGSN or RNC side.

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mostafizur.r   高级会员    发表于 2014-9-21 20:47:54

nice experience sharing. thanks
tariqul.i   中级会员    发表于 2014-9-24 15:47:52

good fault handling experience
mehedi_hassan   银牌会员    发表于 2014-9-24 17:30:10

useful fault handling document
faizur   银牌会员    发表于 2014-9-27 23:30:21

great posting. it will help me for my work
ahleemon   白金会员    发表于 2014-9-27 23:42:02

excellent sharing. thanks
selim.hasan   钻石会员    发表于 2014-9-28 16:06:29

thank you all
user_2837311   钻石会员    发表于 2018-5-30 13:44:02

useful document, thanks
Have a nice day
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