[{"name":"C4-225280","title":"L2TP tunnel failure cause","source":"Samsung","contact":"Ashok Kumar Nayak","contact-id":90702,"tdoctype":"CR","for":"Approval","abstract":"The existing specification at present in clause 5.3.1.2 mentions how the Cause IE can carry additional info from UP function towards CP function to convey the reason for L2TP tunnel failure.\nThe UP function shall send a PFCP Session Establishment Response to the CP function, carrying the Created L2TP Session IE containing information about the established L2TP session, e.g. the used LNS Address, that may be used for statistics or diagnostics. The Cause IE in the response message may carry additional L2TP specific failure information to the CP function if the L2TP tunnel or L2TP session establishment failed.\nBut the Cause IE only provides the value which may not be sufficient to convey the information. For e.g in case of L2TP only 82 value will be sent by UP function to CP function which indicates the L2TP tunnel failure but CP function does not know the exact reason for failure like whether the given LNS IP address or the tunnel password is incorrect.\n\nHence it is proposed that new cause codes are introduced to carry specific information for L2TP tunnel establishment failure case.\n\nWith this new cause code information CP function can take corrective action like updating LNS IP address or password (if locally configured) or inform DN-AAA server if it had received the L2TP information earlier.","secretary_remarks":"","agenda_item_sort_order":34,"ainumber":"7.1.2","ainame":"Best Practice of PFCP [BEPoP]","tdoc_agenda_sort_order":52800,"status":"revised","reservation_date":"2022-11-04 05:27:36","uploaded":"2022-11-04 05:36:44","revisionof":"","revisedto":"C4-225453","release":"Rel-17","crspec":29.244,"crspecversion":"17.6.0","workitem":[{"winame":"BEPoP"}],"crnumber":670.0,"crrevision":"","crcategory":"F","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_ct\/WG4_protocollars_ex-CN4\/TSGCT4_113_Toulouse\/Docs\/C4-225280.zip","group":"C4","meeting":"C4-113","year":2022,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"C4-225453","title":"L2TP tunnel failure cause","source":"Samsung","contact":"Kimmo Kymalainen","contact-id":85426,"tdoctype":"CR","for":"Approval","abstract":"","secretary_remarks":"","agenda_item_sort_order":34,"ainumber":"7.1.2","ainame":"Best Practice of PFCP [BEPoP]","tdoc_agenda_sort_order":52801,"status":"revised","reservation_date":"2022-11-16 10:27:03","uploaded":null,"revisionof":"C4-225280","revisedto":"C4-225454","release":"Rel-17","crspec":29.244,"crspecversion":"17.6.0","workitem":[{"winame":"BEPoP"}],"crnumber":670.0,"crrevision":1.0,"crcategory":"F","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"","group":"C4","meeting":"C4-113","year":2022,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"C4-225454","title":"L2TP tunnel failure cause","source":"Samsung","contact":"Kimmo Kymalainen","contact-id":85426,"tdoctype":"CR","for":"Approval","abstract":"","secretary_remarks":"","agenda_item_sort_order":34,"ainumber":"7.1.2","ainame":"Best Practice of PFCP [BEPoP]","tdoc_agenda_sort_order":52802,"status":"revised","reservation_date":"2022-11-16 10:28:33","uploaded":"2022-11-17 09:10:56","revisionof":"C4-225453","revisedto":"C4-225568","release":"Rel-18","crspec":29.244,"crspecversion":"17.6.0","workitem":[{"winame":"BEPoP"},{"winame":" TEI18"}],"crnumber":670.0,"crrevision":2.0,"crcategory":"F","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_ct\/WG4_protocollars_ex-CN4\/TSGCT4_113_Toulouse\/Docs\/C4-225454.zip","group":"C4","meeting":"C4-113","year":2022,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"C4-225568","title":"L2TP tunnel failure cause","source":"Samsung","contact":"Kimmo Kymalainen","contact-id":85426,"tdoctype":"CR","for":"Approval","abstract":"","secretary_remarks":"","agenda_item_sort_order":34,"ainumber":"7.1.2","ainame":"Best Practice of PFCP [BEPoP]","tdoc_agenda_sort_order":0,"status":"agreed","reservation_date":"2022-11-17 15:34:32","uploaded":"2022-11-18 11:29:16","revisionof":"C4-225454","revisedto":"","release":"Rel-18","crspec":29.244,"crspecversion":"17.6.0","workitem":[{"winame":"TEI18"},{"winame":" BEPoP"}],"crnumber":670.0,"crrevision":3.0,"crcategory":"F","tsg_crp":"CP-223043","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_ct\/WG4_protocollars_ex-CN4\/TSGCT4_113_Toulouse\/Docs\/C4-225568.zip","group":"C4","meeting":"C4-113","year":2022,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0}]