Bug #1790
closedIssue with Long Run 2 - Issue with Periodic routing area update request
0%
Description
Hi All,
This issue is seen with continuous traffic at PCU in DL. After t3312 expires MS will try Periodic routing area procedure(GMM RA UPDATE REQUEST) and SGSN will reply back with "ROUTING AREA UPDATE ACCEPT" but it is not received by MS. resulting in re transmission of "ROUTING AREA UPDATE ACCEPT" and finally trying with RACH and PCU gets print like
bts.cpp:1226 Got RACH from TLLI=0xda425459 while TBF still exists. Release pending DL TBF=0
causing break in DL traffic(with TCP traffic the issue is severe. causing disconnection of TCP traffic). This issue is show stopper.
Currently t3312 is set with high value in osmo-sgsn.cfg to avoid this condition.
Thanks,
Aravind Sirsikar
Updated by laforge over 6 years ago
- Status changed from New to Rejected
couldn't reproduce this here, at least not with current master versions of OsmoPCU + OSmoSGSN. Periodic RAU happens just as expected.