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srsran / srsRAN_4G

Open source SDR 4G software suite from Software Radio Systems (SRS) https://docs.srsran.com/projects/4g
https://www.srsran.com
GNU Affero General Public License v3.0
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questionable eNodeB logs #951

Closed neilrep closed 2 years ago

neilrep commented 2 years ago

Issue Description

Is that normal logs that you can see while running the enb process and continuously function the UE's

Setup Details

We're running an Commercial EPC--> enodeB --> SDR (b210) --> duplexer --> antenna . A complete set-up for a box base station. SRSENB 21.10 ; UHD 3.15.0

Expected Behavior

All camped UE's stable connected to the network and can stream internet seamlessly

Actual Behaviour

2022-08-03T07:26:53.427346 [PDCP ] [W] Setting discard timer to 1500ms, to avoid issues with lingering SDUs in the Unacknowledged SDUs map. LCID=3 2022-08-03T07:26:53.427513 [PDCP ] [W] Setting discard timer to 1500ms, to avoid issues with lingering SDUs in the Unacknowledged SDUs map. LCID=4 2022-08-03T07:26:53.465739 [GTPU ] [E] Sending SDU with invalid IP version to SPGW 2022-08-03T07:26:53.465740 [GTPU ] [E] Invalid IP version to SPGW 2022-08-03T07:26:53.585739 [GTPU ] [E] Sending SDU with invalid IP version to SPGW 2022-08-03T07:26:53.585740 [GTPU ] [E] Invalid IP version to SPGW 2022-08-03T07:26:53.982217 [RLC ] [W] SRB1 Signaling max number of reTx=4 for SN=0 2022-08-03T07:26:58.780451 [STCK ] [E] Bearers: No EPS bearer registered for rnti=0x49 2022-08-03T07:27:05.285539 [S1AP ] [W] Not handling feature - HandoverRestrictionList 2022-08-03T07:27:05.285541 [S1AP ] [W] Not handling feature - SRVCCOperationPossible 2022-08-03T07:27:05.339096 [PDCP ] [W] Setting discard timer to 1500ms, to avoid issues with lingering SDUs in the Unacknowledged SDUs map. LCID=3 2022-08-03T07:27:05.909244 [PDCP ] [W] Setting discard timer to 1500ms, to avoid issues with lingering SDUs in the Unacknowledged SDUs map. LCID=3 2022-08-03T07:27:06.704835 [PDCP ] [W] Setting discard timer to 1500ms, to avoid issues with lingering SDUs in the Unacknowledged SDUs map. LCID=4 2022-08-03T07:27:09.451681 [RLC ] [W] SRB1 Signaling max number of reTx=4 for SN=1 2022-08-03T07:27:14.322587 [STCK ] [E] Bearers: No EPS bearer registered for rnti=0x4c 2022-08-03T07:27:26.274844 [S1AP ] [W] Not handling feature - HandoverRestrictionList 2022-08-03T07:27:26.274845 [S1AP ] [W] Not handling feature - SRVCCOUser 0x4e connected

All UE's connected to the network and can stream internet via Youtube. Just asking a question. As the logs that you can see above, is that normal while all UE's connected to the network and streaming YouTube? We have no idea about this appearing logs. And if you encountered it the same, how can you handle it?

Steps to reproduce the problem

Continuing the process as the function continuously running

Additional Information

[Any additional information, configuration or data that might be necessary to reproduce the issue]

zikkuratti commented 2 years ago

Which bandwidth been used? Saw same warnings today on 1,4Mhz.

andrepuschmann commented 2 years ago

From the eNB logs it seems that the core is using some messages that the eNB's S1AP doesn't support so it's logging that. Consider turning the feature of in the core to avoid those logs.

Further the eNB logs:

2022-08-03T07:26:53.585739 [GTPU ] [E] Sending SDU with invalid IP version to SPGW
2022-08-03T07:26:53.585740 [GTPU ] [E] Invalid IP version to SPGW

which indicates something weird (neither IPv4 nor IPv6) was received over PDCP. You would need to check your Wireshark to see what being sent there.

I am closing the issue. Please reopen if there is a more specific question. Thanks