Unable to successfully register with my new sionna-rk setup

[rgeeva]

Hello community. Looking to get some advice from more experienced users. Trying to establish my first call with my DGX Spark/B210 USRP/Quectel Module and having some issues. The core of the problem, as seen in the logs (Received a MAC CE for C-RNTI with [Y] while processing a TC-RNTI for a new RA attempt), is that the gNB's MAC layer is receiving a MAC Control Element (CE) containing a C-RNTI that belongs to an already established UE context, but it's attempting to process this CE during an RA procedure for a new UE (identified by its TC-RNTI). This suggests a severe logic error in how the MAC layer manages its UE contexts and handles incoming MAC CEs.

Has anyone seen this before? I believe I'm using OAI version is 2025.w34

[SebastianCa]

Hi @rgeeva,
could you please provide the gnb log?

[rgeeva]

@SebastianCa Thanks for your help! Here you go...

672107.753823 [NR_PHY] A [RAPROC] 687.19 Initiating RA procedure with preamble 0, energy 30.0 dB (I0 161, thres 120), delay 7 start symbol 0 freq index 0
672107.753950 [NR_MAC] A 687.19 UE RA-RNTI 010b TC-RNTI b39e: initiating RA procedure
672107.756080 [NR_MAC] I UE b39e: Msg3 scheduled at 688.19 (688.10 TDA 0) start 0 RBs 8
672107.756093 [NR_MAC] A UE b39e: 688.10 Generating RA-Msg2 DCI, RA RNTI 0x10b, state 1, preamble_index(RAPID) 0, timing_offset = 7 (estimated distance 273.4 [m])
672107.756105 [NR_MAC] A 688.10 Send RAR to RA-RNTI 010b
672107.763944 [NR_MAC] A  688.19 PUSCH with TC_RNTI 0xb39e received correctly
672107.763955 [MAC] I [RAPROC] Received SDU for CCCH length 6 for UE b39e
672107.763961 [RLC] I Activated srb0 for UE 45982
672107.763987 [RLC] I Added srb 1 to UE 45982
672107.764064 [NR_MAC] I Activating scheduling Msg4 for TC_RNTI 0xb39e (state WAIT_Msg3)
672107.764068 [NR_RRC] I Decoding CCCH: RNTI b39e, payload_size 6
672107.764259 [NR_RRC] A [--] (cellID 0, UE ID 6 RNTI b39e) Create UE context: CU UE ID 6 DU UE ID 45982 (rnti: b39e, random ue id 5e67eaec9f000000)
672107.764325 [RRC] I activate SRB 1 of UE 6
672107.764331 [NR_RRC] A [DL] (cellID bc614e, UE ID 6 RNTI b39e) Send RRC Setup
672107.766063 [NR_MAC] I UE b39e Generate Msg4: feedback at  689.18, payload 161 bytes, next state nrRA_WAIT_Msg4_MsgB_ACK
672107.773118 [NR_MAC] I (UE b39e) Received Nack in Msg4, preparing retransmission!
672107.776039 [NR_MAC] I UE b39e Generate Msg4: feedback at  690.18, payload 161 bytes, next state nrRA_WAIT_Msg4_MsgB_ACK
672107.783181 [NR_MAC] I (UE b39e) Received Nack in Msg4, preparing retransmission!
672107.786111 [NR_MAC] I UE b39e Generate Msg4: feedback at  691.18, payload 161 bytes, next state nrRA_WAIT_Msg4_MsgB_ACK
672107.793150 [NR_MAC] I (UE b39e) Received Nack in Msg4, preparing retransmission!
672107.796059 [NR_MAC] I UE b39e Generate Msg4: feedback at  692.18, payload 161 bytes, next state nrRA_WAIT_Msg4_MsgB_ACK
672107.803115 [NR_MAC] I  692.18 UE b39e: RA Procedure failed at Msg4!
672107.833638 [NR_MAC] W (696.5) RA Contention Resolution timer expired for UE 0xb39e, RA procedure failed...
672107.833660 [RRC] W no AMF for CU UE ID 6: auto-generate release command
672107.833667 [RLC] W Remove UE 45982
672107.833686 [NR_MAC] I Remove NR rnti 0xb39e
672108.213738 [NR_PHY] A [RAPROC] 733.19 Initiating RA procedure with preamble 3, energy 28.7 dB (I0 159, thres 120), delay 8 start symbol 0 freq index 0
672108.213866 [NR_MAC] A 733.19 UE RA-RNTI 010b TC-RNTI 9c01: initiating RA procedure
672108.216053 [NR_MAC] I UE 9c01: Msg3 scheduled at 734.19 (734.10 TDA 0) start 0 RBs 8
672108.216065 [NR_MAC] A UE 9c01: 734.10 Generating RA-Msg2 DCI, RA RNTI 0x10b, state 1, preamble_index(RAPID) 3, timing_offset = 8 (estimated distance 312.5 [m])
672108.216075 [NR_MAC] A 734.10 Send RAR to RA-RNTI 010b
672108.223889 [NR_MAC] A  734.19 PUSCH with TC_RNTI 0x9c01 received correctly
672108.223901 [NR_MAC] A Received a MAC CE for C-RNTI with b39e
672108.223903 [NR_MAC] W No UE found with C-RNTI 9c01, ignoring Msg3 to have UE come back with new RA attempt
672108.223906 [NR_MAC] I Remove NR rnti 0x9c01
672108.293738 [NR_PHY] A [RAPROC] 741.19 Initiating RA procedure with preamble 7, energy 30.0 dB (I0 146, thres 120), delay 8 start symbol 0 freq index 0
672108.293862 [NR_MAC] A 741.19 UE RA-RNTI 010b TC-RNTI b9e9: initiating RA procedure
672108.296077 [NR_MAC] I UE b9e9: Msg3 scheduled at 742.19 (742.10 TDA 0) start 0 RBs 8
672108.296088 [NR_MAC] A UE b9e9: 742.10 Generating RA-Msg2 DCI, RA RNTI 0x10b, state 1, preamble_index(RAPID) 7, timing_offset = 8 (estimated distance 312.5 [m])
672108.296097 [NR_MAC] A 742.10 Send RAR to RA-RNTI 010b
672108.303831 [NR_MAC] A  742.19 PUSCH with TC_RNTI 0xb9e9 received correctly
672108.303839 [NR_MAC] A Received a MAC CE for C-RNTI with b39e
672108.303841 [NR_MAC] W No UE found with C-RNTI b9e9, ignoring Msg3 to have UE come back with new RA attempt
672108.303844 [NR_MAC] I Remove NR rnti 0xb9e9
672108.373681 [NR_PHY] A [RAPROC] 749.19 Initiating RA procedure with preamble 13, energy 32.4 dB (I0 141, thres 120), delay 8 start symbol 0 freq index 0
672108.373795 [NR_MAC] A 749.19 UE RA-RNTI 010b TC-RNTI 0398: initiating RA procedure
672108.376033 [NR_MAC] I UE 0398: Msg3 scheduled at 750.19 (750.10 TDA 0) start 0 RBs 8
672108.376044 [NR_MAC] A UE 0398: 750.10 Generating RA-Msg2 DCI, RA RNTI 0x10b, state 1, preamble_index(RAPID) 13, timing_offset = 8 (estimated distance 312.5 [m])
672108.376053 [NR_MAC] A 750.10 Send RAR to RA-RNTI 010b
672108.383829 [NR_MAC] A  750.19 PUSCH with TC_RNTI 0x0398 received correctly
672108.383836 [NR_MAC] A Received a MAC CE for C-RNTI with b39e
672108.383837 [NR_MAC] W No UE found with C-RNTI 0398, ignoring Msg3 to have UE come back with new RA attempt
672108.383840 [NR_MAC] I Remove NR rnti 0x0398
672108.453740 [NR_PHY] A [RAPROC] 757.19 Initiating RA procedure with preamble 25, energy 34.4 dB (I0 142, thres 120), delay 8 start symbol 0 freq index 0
672108.453851 [NR_MAC] A 757.19 UE RA-RNTI 010b TC-RNTI e186: initiating RA procedure
672108.456051 [NR_MAC] I UE e186: Msg3 scheduled at 758.19 (758.10 TDA 0) start 0 RBs 8
672108.456063 [NR_MAC] A UE e186: 758.10 Generating RA-Msg2 DCI, RA RNTI 0x10b, state 1, preamble_index(RAPID) 25, timing_offset = 8 (estimated distance 312.5 [m])
672108.456071 [NR_MAC] A 758.10 Send RAR to RA-RNTI 010b
672108.463778 [NR_MAC] A  758.19 PUSCH with TC_RNTI 0xe186 received correctly
672108.463784 [NR_MAC] A Received a MAC CE for C-RNTI with b39e
672108.463785 [NR_MAC] W No UE found with C-RNTI e186, ignoring Msg3 to have UE come back with new RA attempt
672108.463787 [NR_MAC] I Remove NR rnti 0xe186
672108.533750 [NR_PHY] A [RAPROC] 765.19 Initiating RA procedure with preamble 0, energy 35.4 dB (I0 143, thres 120), delay 7 start symbol 0 freq index 0
672108.533859 [NR_MAC] A 765.19 UE RA-RNTI 010b TC-RNTI 9eaf: initiating RA procedure
672108.536093 [NR_MAC] I UE 9eaf: Msg3 scheduled at 766.19 (766.10 TDA 0) start 0 RBs 8
672108.536104 [NR_MAC] A UE 9eaf: 766.10 Generating RA-Msg2 DCI, RA RNTI 0x10b, state 1, preamble_index(RAPID) 0, timing_offset = 7 (estimated distance 273.4 [m])
672108.536112 [NR_MAC] A 766.10 Send RAR to RA-RNTI 010b
672108.543952 [NR_MAC] A  766.19 PUSCH with TC_RNTI 0x9eaf received correctly
672108.543963 [NR_MAC] A Received a MAC CE for C-RNTI with b39e
672108.543965 [NR_MAC] W No UE found with C-RNTI 9eaf, ignoring Msg3 to have UE come back with new RA attempt
672108.543968 [NR_MAC] I Remove NR rnti 0x9eaf
672108.551038 [NR_MAC] I Frame.Slot 768.0

672109.831050 [NR_MAC] I Frame.Slot 896.0

672111.111065 [NR_MAC] I Frame.Slot 0.0

672112.391091 [NR_MAC] I Frame.Slot 128.0

672113.671020 [NR_MAC] I Frame.Slot 256.0

672114.951032 [NR_MAC] I Frame.Slot 384.0

672116.231120 [NR_MAC] I Frame.Slot 512.0

672117.511055 [NR_MAC] I Frame.Slot 640.0

672118.773687 [NR_PHY] A [RAPROC] 765.19 Initiating RA procedure with preamble 24, energy 28.7 dB (I0 160, thres 120), delay 7 start symbol 0 freq index 0
672118.773809 [NR_MAC] A 765.19 UE RA-RNTI 010b TC-RNTI be02: initiating RA procedure
672118.776060 [NR_MAC] I UE be02: Msg3 scheduled at 766.19 (766.10 TDA 0) start 0 RBs 8
672118.776071 [NR_MAC] A UE be02: 766.10 Generating RA-Msg2 DCI, RA RNTI 0x10b, state 1, preamble_index(RAPID) 24, timing_offset = 7 (estimated distance 273.4 [m])
672118.776081 [NR_MAC] A 766.10 Send RAR to RA-RNTI 010b
672118.783764 [NR_MAC] A  766.19 PUSCH with TC_RNTI 0xbe02 received correctly
672118.783773 [MAC] I [RAPROC] Received SDU for CCCH length 6 for UE be02
672118.783779 [RLC] I Activated srb0 for UE 48642
672118.783806 [RLC] I Added srb 1 to UE 48642
672118.783876 [NR_MAC] I Activating scheduling Msg4 for TC_RNTI 0xbe02 (state WAIT_Msg3)
672118.783880 [NR_RRC] I Decoding CCCH: RNTI be02, payload_size 6
672118.784067 [NR_RRC] A [--] (cellID 0, UE ID 7 RNTI be02) Create UE context: CU UE ID 7 DU UE ID 48642 (rnti: be02, random ue id 823afca347000000)
672118.784142 [RRC] I activate SRB 1 of UE 7
672118.784148 [NR_RRC] A [DL] (cellID bc614e, UE ID 7 RNTI be02) Send RRC Setup
672118.786025 [NR_MAC] I UE be02 Generate Msg4: feedback at  767.18, payload 161 bytes, next state nrRA_WAIT_Msg4_MsgB_ACK
672118.791005 [NR_MAC] I Frame.Slot 768.0

672118.793077 [NR_MAC] I (UE be02) Received Nack in Msg4, preparing retransmission!
672118.795995 [NR_MAC] I UE be02 Generate Msg4: feedback at  768.18, payload 161 bytes, next state nrRA_WAIT_Msg4_MsgB_ACK
672118.803117 [NR_MAC] I (UE be02) Received Nack in Msg4, preparing retransmission!
672118.806043 [NR_MAC] I UE be02 Generate Msg4: feedback at  769.18, payload 161 bytes, next state nrRA_WAIT_Msg4_MsgB_ACK
672118.813096 [NR_MAC] I (UE be02) Received Nack in Msg4, preparing retransmission!
672118.816018 [NR_MAC] I UE be02 Generate Msg4: feedback at  770.18, payload 161 bytes, next state nrRA_WAIT_Msg4_MsgB_ACK
672118.823077 [NR_MAC] I  770.18 UE be02: RA Procedure failed at Msg4!
672118.853597 [NR_MAC] W (774.5) RA Contention Resolution timer expired for UE 0xbe02, RA procedure failed...
672118.853618 [RRC] W no AMF for CU UE ID 7: auto-generate release command
672118.853626 [RLC] W Remove UE 48642
672118.853648 [NR_MAC] I Remove NR rnti 0xbe02
672119.253697 [NR_PHY] A [RAPROC] 813.19 Initiating RA procedure with preamble 26, energy 28.7 dB (I0 164, thres 120), delay 8 start symbol 0 freq index 0
672119.253830 [NR_MAC] A 813.19 UE RA-RNTI 010b TC-RNTI 71fe: initiating RA procedure
672119.256039 [NR_MAC] I UE 71fe: Msg3 scheduled at 814.19 (814.10 TDA 0) start 0 RBs 8
672119.256050 [NR_MAC] A UE 71fe: 814.10 Generating RA-Msg2 DCI, RA RNTI 0x10b, state 1, preamble_index(RAPID) 26, timing_offset = 8 (estimated distance 312.5 [m])
672119.256060 [NR_MAC] A 814.10 Send RAR to RA-RNTI 010b
672119.263763 [NR_MAC] A  814.19 PUSCH with TC_RNTI 0x71fe received correctly
672119.263770 [NR_MAC] A Received a MAC CE for C-RNTI with be02
672119.263772 [NR_MAC] W No UE found with C-RNTI 71fe, ignoring Msg3 to have UE come back with new RA attempt
672119.263775 [NR_MAC] I Remove NR rnti 0x71fe
672119.333679 [NR_PHY] A [RAPROC] 821.19 Initiating RA procedure with preamble 13, energy 33.0 dB (I0 146, thres 120), delay 8 start symbol 0 freq index 0
672119.333800 [NR_MAC] A 821.19 UE RA-RNTI 010b TC-RNTI bd7d: initiating RA procedure
672119.336011 [NR_MAC] I UE bd7d: Msg3 scheduled at 822.19 (822.10 TDA 0) start 0 RBs 8
672119.336021 [NR_MAC] A UE bd7d: 822.10 Generating RA-Msg2 DCI, RA RNTI 0x10b, state 1, preamble_index(RAPID) 13, timing_offset = 8 (estimated distance 312.5 [m])
672119.336029 [NR_MAC] A 822.10 Send RAR to RA-RNTI 010b
672119.343736 [NR_MAC] A  822.19 PUSCH with TC_RNTI 0xbd7d received correctly
672119.343745 [NR_MAC] A Received a MAC CE for C-RNTI with be02
672119.343747 [NR_MAC] W No UE found with C-RNTI bd7d, ignoring Msg3 to have UE come back with new RA attempt
672119.343750 [NR_MAC] I Remove NR rnti 0xbd7d
672119.413749 [NR_PHY] A [RAPROC] 829.19 Initiating RA procedure with preamble 41, energy 34.0 dB (I0 146, thres 120), delay 8 start symbol 0 freq index 0
672119.413873 [NR_MAC] A 829.19 UE RA-RNTI 010b TC-RNTI 559a: initiating RA procedure
672119.416011 [NR_MAC] I UE 559a: Msg3 scheduled at 830.19 (830.10 TDA 0) start 0 RBs 8
672119.416023 [NR_MAC] A UE 559a: 830.10 Generating RA-Msg2 DCI, RA RNTI 0x10b, state 1, preamble_index(RAPID) 41, timing_offset = 8 (estimated distance 312.5 [m])
672119.416030 [NR_MAC] A 830.10 Send RAR to RA-RNTI 010b
672119.423751 [NR_MAC] A  830.19 PUSCH with TC_RNTI 0x559a received correctly
672119.423761 [NR_MAC] A Received a MAC CE for C-RNTI with be02
672119.423763 [NR_MAC] W No UE found with C-RNTI 559a, ignoring Msg3 to have UE come back with new RA attempt
672119.423766 [NR_MAC] I Remove NR rnti 0x559a
672119.493761 [NR_PHY] A [RAPROC] 837.19 Initiating RA procedure with preamble 54, energy 36.3 dB (I0 144, thres 120), delay 8 start symbol 0 freq index 0
672119.493885 [NR_MAC] A 837.19 UE RA-RNTI 010b TC-RNTI 56d1: initiating RA procedure
672119.496057 [NR_MAC] I UE 56d1: Msg3 scheduled at 838.19 (838.10 TDA 0) start 0 RBs 8
672119.496070 [NR_MAC] A UE 56d1: 838.10 Generating RA-Msg2 DCI, RA RNTI 0x10b, state 1, preamble_index(RAPID) 54, timing_offset = 8 (estimated distance 312.5 [m])
672119.496077 [NR_MAC] A 838.10 Send RAR to RA-RNTI 010b
672119.503849 [NR_MAC] A  838.19 PUSCH with TC_RNTI 0x56d1 received correctly
672119.503859 [NR_MAC] A Received a MAC CE for C-RNTI with be02
672119.503861 [NR_MAC] W No UE found with C-RNTI 56d1, ignoring Msg3 to have UE come back with new RA attempt
672119.503865 [NR_MAC] I Remove NR rnti 0x56d1
672120.071014 [NR_MAC] I Frame.Slot 896.0

[SebastianCa]

Do you use the default config? Can you run the same config in rfsim mode?

There seems to be an issue with the AMF connection; this shouldn't cause the issue; did you start the Core network?

[rgeeva]

As far as I understand, I'm using the default config. I can certainly try the rfsim mode but as you can see from the screen cap, the AMF seems to be coming up fine. Is there something I can check from an AMF connectivity?

Starting 5G Core network
[+] Running 9/9
 ✔ Network oai-traffic-net  Created                                                           0.0s
 ✔ Network oai-public-net   Created                                                           0.0s
 ✔ Network oai-e2-net       Created                                                           0.0s
 ✔ Container nearRT-RIC     Started                                                           0.1s
 ✔ Container oai-mysql      Started                                                           0.1s
 ✔ Container oai-amf        Started                                                           0.2s
 ✔ Container oai-smf        Started                                                           0.3s
 ✔ Container oai-upf        Started                                                           0.4s
 ✔ Container oai-ext-dn     Started                                                           0.4s
Waiting for oai-mysql to be healthy (Timeout: 60s)...
oai-mysql is ready!
Waiting for oai-amf to be healthy (Timeout: 60s)...
oai-amf is ready!
Waiting for oai-smf to be healthy (Timeout: 60s)...
oai-smf is ready!
Waiting for oai-upf to be healthy (Timeout: 60s)...
oai-upf is ready!
Waiting for oai-ext-dn to be healthy (Timeout: 60s)...
oai-ext-dn is ready!
All services are up and healthy!
Starting gNB

[SebastianCa]

You can check the amf logs via docker logs -f oai-amf to see if the gnb connects properly.

Do you use a cabled setup?

[rgeeva]

I'm using a setup with physical antenna on both the USRP and Quectel module in a RF shielded box. As for the AMF logs, here they are...

Analysis of the AMF Logs:
Successful Initialization and Configuration:

The AMF starts up, loads its configuration from config.yaml.
It correctly identifies its network interfaces (eth0, IP 192.168.71.132) and ports for N2 (38412) and SBI (80).
It is configured with a specific GUAMI (262, 99, 1, 1, 1) and serves PLMN 262, 99 with TAC 1 and SST 1.
It is configured to connect to an SMF at http://192.168.71.133:80.
It is configured to use a MySQL database (mysql user test/test).
NF Registration is set to No, which is common for standalone deployments.
Successful gNB Connection (NGAP Handshake):

The AMF successfully establishes an SCTP association with a gNB at 192.168.71.140.
It receives an NGSetupRequest from the gNB, which includes its GlobalGNB-ID (MCC 262, MNC 99, gNB-ID 0xe00), TAC (1), and supported S-NSSAI (SST 1).
The AMF validates these parameters against its own configuration (PLMN, TAC, S-NSSAI) and finds them compatible.
It successfully sends an NGSetupResponse, providing its own name (OAI-AMF), ServedGUAMIList, PLMNSupportList, and Relative Capacity.
The logs confirm: [amf_n2] [debug] gNB with gNB_id 0xe00, assoc_id 106 has been attached to AMF and [amf_app] [debug] A new gNB has been successfully added!.
No UE Activity:

The most striking observation is the UEs' Information table, which consistently shows no registered UEs (Index | - | - | - | - | - | - | -).

docker logs -f oai-amf
Trying to read .yaml configuration file
LTTNG Tracing disabled at build-time!
[2026-02-11 18:57:41.169] [amf_app] [start] Options parsed!
[2026-02-11 18:57:41.169] [system ] [debug] Parsing the configuration file, file type YAML.
[2026-02-11 18:57:41.169] [config ] [info] Reading NF configuration from /openair-amf/etc/config.yaml
[2026-02-11 18:57:41.172] [config ] [debug] Unknown NF upf in configuration. Ignored
[2026-02-11 18:57:41.172] [config ] [debug] Validating configuration of log_level
[2026-02-11 18:57:41.172] [config ] [debug] Validating configuration of register_nf
[2026-02-11 18:57:41.172] [config ] [debug] Validating configuration of http_version
[2026-02-11 18:57:41.172] [config ] [debug] Validating configuration of http_request_timeout
[2026-02-11 18:57:41.172] [config ] [debug] Validating configuration of NSSF
[2026-02-11 18:57:41.172] [config ] [debug] Validating configuration of NRF
[2026-02-11 18:57:41.172] [config ] [debug] Validating configuration of UDM
[2026-02-11 18:57:41.173] [config ] [debug] Validating configuration of AUSF
[2026-02-11 18:57:41.173] [config ] [debug] Validating configuration of SMF
[2026-02-11 18:57:41.173] [config ] [debug] Validating configuration of AMF
[2026-02-11 18:57:41.174] [config ] [debug] Validating configuration of database
[2026-02-11 18:57:41.174] [config] [info] ==== OAI-CN5G AMF vBranch: HEAD Abrev. Hash: 7857a19b Date: Mon Aug 18 18:14:27 2025 +0200 ====
[2026-02-11 18:57:41.174] [config] [info] ======================    AMF   =====================
[2026-02-11 18:57:41.174] [config] [info] Configuration AMF:
[2026-02-11 18:57:41.174] [config] [info] - Instance ................: 1
[2026-02-11 18:57:41.174] [config] [info] - PID dir .................: /var/run
[2026-02-11 18:57:41.174] [config] [info] - AMF NAME.................: OAI-AMF
[2026-02-11 18:57:41.174] [config] [info] - GUAMI (MCC, MNC, Region ID, AMF Set ID, AMF pointer):
[2026-02-11 18:57:41.174] [config] [info]     (262, 99, 1, 1, 1)
[2026-02-11 18:57:41.174] [config] [info] - Served Guami List:
[2026-02-11 18:57:41.174] [config] [info]     (262, 99, 1 , 1, 1)
[2026-02-11 18:57:41.174] [config] [info] - Relative Capacity .......: 30
[2026-02-11 18:57:41.174] [config] [info] - PLMN Support:
[2026-02-11 18:57:41.174] [config] [info]     MCC, MNC ..............: 262, 99
[2026-02-11 18:57:41.174] [config] [info]     TAC ...................: 1
[2026-02-11 18:57:41.174] [config] [info]     Slice Support .........:
[2026-02-11 18:57:41.174] [config] [info]         SST ...............: 1
[2026-02-11 18:57:41.174] [config] [info] - Default DNN.................: default
[2026-02-11 18:57:41.174] [config] [info] - Emergency Support .......: No
[2026-02-11 18:57:41.174] [config] [info] - Database:
[2026-02-11 18:57:41.174] [config] [info]     MySQL Server Addr .....: mysql
[2026-02-11 18:57:41.174] [config] [info]     MySQL user ............: test
[2026-02-11 18:57:41.174] [config] [info]     MySQL pass ............: test
[2026-02-11 18:57:41.174] [config] [info]     MySQL DB ..............: oai_db
[2026-02-11 18:57:41.174] [config] [info] - N2 Networking:
[2026-02-11 18:57:41.174] [config] [info]     Iface .................: eth0
[2026-02-11 18:57:41.174] [config] [info]     IP Addr ...............: 192.168.71.132
[2026-02-11 18:57:41.174] [config] [info]     Port ..................: 38412
[2026-02-11 18:57:41.174] [config] [info] - SBI Networking:
[2026-02-11 18:57:41.174] [config] [info]     Iface .................: eth0
[2026-02-11 18:57:41.174] [config] [info]     IP Addr ...............: 192.168.71.132
[2026-02-11 18:57:41.174] [config] [info]     Port ..................: 80
[2026-02-11 18:57:41.174] [config] [info]     API version............: v1
[2026-02-11 18:57:41.174] [config] [info] - SMF:
[2026-02-11 18:57:41.174] [config] [info]     URI root ...............: http://192.168.71.133:80
[2026-02-11 18:57:41.174] [config] [info]     API version ...........: v1
[2026-02-11 18:57:41.174] [config] [info] - Supported Features:
[2026-02-11 18:57:41.174] [config] [info]     NF Registration .......: No
[2026-02-11 18:57:41.174] [config] [info]     SMF Selection .........: No
[2026-02-11 18:57:41.174] [config] [info]     External AUSF .........: No
[2026-02-11 18:57:41.174] [config] [info]     External UDM ..........: No
[2026-02-11 18:57:41.174] [config] [info]     External NSSF .........: No
[2026-02-11 18:57:41.174] [config] [info]     External LMF ..........: No
[2026-02-11 18:57:41.174] [config] [info]     HTTP version...........: 1
[2026-02-11 18:57:41.174] [config] [info] - Log Level ...............: debug
[2026-02-11 18:57:41.174] [config] [info] - Supported NAS Algorithm:
[2026-02-11 18:57:41.174] [config] [info]     Ordered Integrity Algorithm: 5G_IA0 5G_IA1 5G_IA2
[2026-02-11 18:57:41.174] [config] [info]     Ordered Ciphering Algorithm: 5G_EA0 5G_EA1 5G_EA2
[2026-02-11 18:57:41.174] [itti] [start] Starting...
[2026-02-11 18:57:41.174] [itti] [start] Started
[2026-02-11 18:57:41.174] [amf_sbi] [info] HTTP Client successfully initiated on interface eth0 with timeout 3000 ms, HTTP version 1
[2026-02-11 18:57:41.174] [amf_app] [start] Creating AMF application functionality layer
[2026-02-11 18:57:41.174] [itti] [info] Starting timer_manager_task
[2026-02-11 18:57:41.174] [itti] [warning] Could not set schedparam to ITTI task 0, err=1
[2026-02-11 18:57:41.176] [amf_n1] [start] amf_n1 started
[2026-02-11 18:57:41.176] [sctp] [debug] Creating socket!
[2026-02-11 18:57:41.176] [sctp] [debug] Getaddrinfo on 192.168.71.132 was OK
[2026-02-11 18:57:41.176] [sctp] [info] Created socket (3)
[2026-02-11 18:57:41.177] [ngap] [info] Set N2 AMF IPv4 Addr 192.168.71.132, port 38412
[2026-02-11 18:57:41.177] [sctp] [info] Create pthread to receive SCTP message
[2026-02-11 18:57:41.178] [amf_n2] [start] amf_n2 started
[2026-02-11 18:57:41.179] [amf_sbi] [start] amf_sbi started
[2026-02-11 18:57:41.179] [amf_app] [debug] NF instance info
[2026-02-11 18:57:41.179] [amf_app] [debug]     Instance ID: a4a81a14-42c6-4e9f-9442-1e10670aacfb
[2026-02-11 18:57:41.179] [amf_app] [debug]     Instance name: OAI-AMF
[2026-02-11 18:57:41.179] [amf_app] [debug]     Instance type: AMF
[2026-02-11 18:57:41.179] [amf_app] [debug]     Status: REGISTERED
[2026-02-11 18:57:41.179] [amf_app] [debug]     HeartBeat timer: 50
[2026-02-11 18:57:41.179] [amf_app] [debug]     Priority: 1
[2026-02-11 18:57:41.179] [amf_app] [debug]     Capacity: 100
[2026-02-11 18:57:41.179] [amf_app] [debug]     SNSSAI:
[2026-02-11 18:57:41.179] [amf_app] [debug]              SST, SD: 1, FFFFFF
[2026-02-11 18:57:41.179] [amf_app] [debug]     IPv4 Addr:
[2026-02-11 18:57:41.179] [amf_app] [debug]              192.168.71.132
[2026-02-11 18:57:41.179] [amf_app] [debug]     NF Service
[2026-02-11 18:57:41.179] [amf_app] [debug]             Service Instance ID: namf_communication, Service name: namf_communication, Version (apiVersionInUri: v1, apiFullVersion: 1.0.0 ), Scheme: http, Service status: REGISTERED,  IpEndPoints: Ipv4 Address: 192.168.71.132, TransportProtocol: TCP, Port: 80
[2026-02-11 18:57:41.179] [amf_app] [debug]             Service Instance ID: namf-evts, Service name: namf-evts, Version (apiVersionInUri: v1, apiFullVersion: 1.0.0 ), Scheme: http, Service status: REGISTERED,  IpEndPoints: Ipv4 Address: 192.168.71.132, TransportProtocol: TCP, Port: 80
[2026-02-11 18:57:41.179] [amf_app] [debug]     AMF Info
[2026-02-11 18:57:41.179] [amf_app] [debug]             AMF Set ID: 001, AMF Region ID: 01
[2026-02-11 18:57:41.179] [amf_app] [debug]             AMF GUAMI List, AMF_ID: 010041
[2026-02-11 18:57:41.179] [amf_app] [debug]             AMF GUAMI List, PLMN (MCC: 262, MNC: 99)
[2026-02-11 18:57:41.179] [amf_app] [start] Started timer (1)
[2026-02-11 18:57:41.179] [amf_app] [debug] Initiating AMF server endpoints
[2026-02-11 18:57:41.179] [amf_server] [debug] Initiate AMF Server Endpoints done!
[2026-02-11 18:57:41.179] [amf_server] [debug] AMF handler for AMFConfigurationApiImpl
[2026-02-11 18:57:41.179] [amf_server] [debug] AMF handler for IndividualSubscriptionDocumentApiImpl
[2026-02-11 18:57:41.179] [amf_server] [debug] AMF handler for IndividualSubscriptionDocumentApiImpl
[2026-02-11 18:57:41.179] [amf_server] [debug] AMF handler for IndividualUeContextDocumentApiImpl
[2026-02-11 18:57:41.179] [amf_server] [debug] AMF handler for N1N2IndividualSubscriptionDocumentApiImpl
[2026-02-11 18:57:41.179] [amf_server] [debug] AMF handler for N1N2MessageCollectionDocumentApiImpl
[2026-02-11 18:57:41.179] [amf_server] [debug] AMF handler for N1N2SubscriptionsCollectionForIndividualUEContextsDocumentApiImpl
[2026-02-11 18:57:41.179] [amf_server] [debug] AMF handler for NonUEN2MessageNotificationIndividualSubscriptionDocumentApiImpl
[2026-02-11 18:57:41.179] [amf_server] [debug] AMF handler for NonUEN2MessagesCollectionDocumentApiImpl
[2026-02-11 18:57:41.179] [amf_server] [debug] AMF handler for NonUEN2MessagesSubscriptionsCollectionDocumentApiImpl
[2026-02-11 18:57:41.179] [amf_server] [debug] AMF handler for SubscriptionsCollectionDocumentApiImpl
[2026-02-11 18:57:41.179] [amf_server] [debug] AMF handler for SubscriptionsCollectionDocumentApiImplEventExposure
[2026-02-11 18:57:41.179] [amf_server] [debug] AMF handler for N1MessageNotifyApiImpl
[2026-02-11 18:57:41.179] [amf_server] [debug] AMF handler for StatusNotifyApiImpl
[2026-02-11 18:57:41.179] [amf_app] [debug] Initiation Done!
[2026-02-11 18:57:55.188] [sctp] [debug] SCTP Association Change event received
[2026-02-11 18:57:55.188] [sctp] [debug] Add new association with Id (106)
[2026-02-11 18:57:55.188] [sctp] [info] ----------------------
[2026-02-11 18:57:55.188] [sctp] [info] Local addresses:
[2026-02-11 18:57:55.188] [sctp] [info]     - IPv4 Addr: 192.168.71.132
[2026-02-11 18:57:55.188] [sctp] [info] ----------------------
[2026-02-11 18:57:55.188] [sctp] [info] Peer addresses:
[2026-02-11 18:57:55.188] [sctp] [info]     - IPv4 Addr: 192.168.71.140
[2026-02-11 18:57:55.188] [sctp] [info] ----------------------
[2026-02-11 18:57:55.188] [ngap] [debug] Ready to handle new NGAP SCTP association request (id 106)
[2026-02-11 18:57:55.188] [ngap] [debug] Create a new gNB context with assoc_id (106)
[2026-02-11 18:57:55.188] [sctp] [info] [Assoc_id 106, Socket 19] Received a message (length 55) from port 41774, on stream 0, PPID 60
[2026-02-11 18:57:55.188] [ngap] [debug] Handling SCTP payload from SCTP Server on assoc_id (106), stream_id (0), instreams (2), outstreams (2)
[2026-02-11 18:57:55.188] [ngap] [debug] Decoded NGAP message, procedure code 21, present 1
InitiatingMessage ::= {
    procedureCode: 21
    criticality: 0 (reject)
    value: NGSetupRequest ::= {
        protocolIEs: ProtocolIE-Container ::= {
            NGSetupRequestIEs ::= {
                id: 27
                criticality: 0 (reject)
                value: GlobalGNB-ID ::= {
                    pLMNIdentity: 62 F2 99
                    gNB-ID: 00 00 E0 00 (4 bits unused)
                }
            }
            NGSetupRequestIEs ::= {
                id: 82
                criticality: 1 (ignore)
                value: gNB-oai
            }
            NGSetupRequestIEs ::= {
                id: 102
                criticality: 0 (reject)
                value: SupportedTAList ::= {
                    SupportedTAItem ::= {
                        tAC: 00 00 01
                        broadcastPLMNList: BroadcastPLMNList ::= {
                            BroadcastPLMNItem ::= {
                                pLMNIdentity: 62 F2 99
                                tAISliceSupportList: SliceSupportList ::= {
                                    SliceSupportItem ::= {
                                        s-NSSAI: S-NSSAI ::= {
                                            sST: 01
                                        }
                                    }
                                }
                            }
                        }
                    }
                }
            }
            NGSetupRequestIEs ::= {
                id: 21
                criticality: 1 (ignore)
                value: 0 (v32)
            }
        }
    }
}
[2026-02-11 18:57:55.188] [ngap] [debug] [gNB Assoc Id 106] Sending ITTI NG Setup Request message to TASK_AMF_N2
InitiatingMessage ::= {
    procedureCode: 21
    criticality: 0 (reject)
    value: NGSetupRequest ::= {
        protocolIEs: ProtocolIE-Container ::= {
            NGSetupRequestIEs ::= {
                id: 27
                criticality: 0 (reject)
                value: GlobalGNB-ID ::= {
                    pLMNIdentity: 62 F2 99
                    gNB-ID: 00 00 E0 00 (4 bits unused)
                }
            }
            NGSetupRequestIEs ::= {
                id: 82
                criticality: 1 (ignore)
                value: gNB-oai
            }
            NGSetupRequestIEs ::= {
                id: 102
                criticality: 0 (reject)
                value: SupportedTAList ::= {
                    SupportedTAItem ::= {
                        tAC: 00 00 01
                        broadcastPLMNList: BroadcastPLMNList ::= {
                            BroadcastPLMNItem ::= {
                                pLMNIdentity: 62 F2 99
                                tAISliceSupportList: SliceSupportList ::= {
                                    SliceSupportItem ::= {
                                        s-NSSAI: S-NSSAI ::= {
                                            sST: 01
                                        }
                                    }
                                }
                            }
                        }
                    }
                }
            }
            NGSetupRequestIEs ::= {
                id: 21
                criticality: 1 (ignore)
                value: 0 (v32)
            }
        }
    }
}
[2026-02-11 18:57:55.188] [ngap] [debug] Received TAC 0x1
[2026-02-11 18:57:55.188] [amf_n2] [info] Received NGSetupRequest message, handling
[2026-02-11 18:57:55.188] [amf_n2] [debug] [gNB Assoc ID 106] Handle NG Setup Request...
[2026-02-11 18:57:55.188] [amf_n2] [debug] Parameters: assoc_id 106, stream 0
[2026-02-11 18:57:55.188] [amf_n2] [debug] Update gNB context with assoc id (106)
[2026-02-11 18:57:55.188] [amf_n2] [debug] RAN Node Info, Global RAN Node ID: 0xe00, MCC 262, MNC 99
[2026-02-11 18:57:55.188] [amf_n2] [debug] IE RanNodeName: gNB-oai
[2026-02-11 18:57:55.188] [amf_n2] [debug] IE DefaultPagingDRX: 0
[2026-02-11 18:57:55.188] [amf_n2] [debug] TAC configured 1, TAC received 1
[2026-02-11 18:57:55.188] [amf_n2] [debug] Common PLMN MCC 262, MNC 99
[2026-02-11 18:57:55.188] [amf_n2] [debug] S-NSSAI from gNB (SST 1, SD FFFFFF)
[2026-02-11 18:57:55.188] [amf_n2] [debug] S-NSSAI from AMF (SST 1, SD FFFFFF)
[2026-02-11 18:57:55.189] [amf_n2] [debug] Common S-NSSAI (SST 1, SD FFFFFF)
[2026-02-11 18:57:55.189] [amf_n2] [debug] GNB PLMN (262, 99) is included in the common PLMNs
[2026-02-11 18:57:55.189] [amf_n2] [debug] Encoding NG_SETUP_RESPONSE ...
SuccessfulOutcome ::= {
    procedureCode: 21
    criticality: 0 (reject)
    value: NGSetupResponse ::= {
        protocolIEs: ProtocolIE-Container ::= {
            NGSetupResponseIEs ::= {
                id: 1
                criticality: 0 (reject)
                value: OAI-AMF
            }
            NGSetupResponseIEs ::= {
                id: 96
                criticality: 0 (reject)
                value: ServedGUAMIList ::= {
                    ServedGUAMIItem ::= {
                        gUAMI: GUAMI ::= {
                            pLMNIdentity: 62 F2 99
                            aMFRegionID: 01
                            aMFSetID: 00 40 (6 bits unused)
                            aMFPointer: 04 (2 bits unused)
                        }
                    }
                }
            }
            NGSetupResponseIEs ::= {
                id: 86
                criticality: 1 (ignore)
                value: 30
            }
            NGSetupResponseIEs ::= {
                id: 80
                criticality: 0 (reject)
                value: PLMNSupportList ::= {
                    PLMNSupportItem ::= {
                        pLMNIdentity: 62 F2 99
                        sliceSupportList: SliceSupportList ::= {
                            SliceSupportItem ::= {
                                s-NSSAI: S-NSSAI ::= {
                                    sST: 01
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}
[2026-02-11 18:57:55.189] [ngap] [debug] Encoded size (49)
[2026-02-11 18:57:55.189] [sctp] [debug] [Socket 19, Assoc ID 106] Sending buffer 0xeaaf6c000c50 of 49 bytes on stream 0 with PPID 60
[2026-02-11 18:57:55.189] [sctp] [debug] Successfully sent 49 bytes on stream 0
[2026-02-11 18:57:55.189] [amf_n2] [debug] Sending NG_SETUP_RESPONSE Ok
[2026-02-11 18:57:55.189] [amf_n2] [debug] gNB with gNB_id 0xe00, assoc_id 106 has been attached to AMF
[2026-02-11 18:57:55.189] [amf_app] [debug] A new gNB has been successfully added!
[2026-02-11 18:57:55.189] [ngap] [debug] Free NGAP Message PDU
[2026-02-11 18:57:55.189] [ngap] [debug] Free NGAP Message PDU
[2026-02-11 18:58:01.179] [amf_app] [info]
   |------------------------------------------------------------------------------------------------------------------------------------------------------------|
   |----------------------------------------------------------------------gNBs' Information---------------------------------------------------------------------|
   |  Index |               Status               |              Global Id             |              gNB Name              |                PLMN                |
   |    1   |              Connected             |               0x0E00               |               gNB-oai              |               262,99               |
   |------------------------------------------------------------------------------------------------------------------------------------------------------------|

   |-----------------------------------------------------------------------------------------------------------------------------------------------------------|
   |---------------------------------------------------------------------UEs' Information----------------------------------------------------------------------|
   |  Index |     5GMM State     |        IMSI        |        GUTI        |   RAN UE NGAP ID   |   AMF UE NGAP ID   |        PLMN        |       Cell Id      |
   |    -   |          -         |          -         |          -         |          -         |          -         |          -         |          -         |
   |-----------------------------------------------------------------------------------------------------------------------------------------------------------|

[2026-02-11 18:58:21.179] [amf_app] [info]
   |------------------------------------------------------------------------------------------------------------------------------------------------------------|
   |----------------------------------------------------------------------gNBs' Information---------------------------------------------------------------------|
   |  Index |               Status               |              Global Id             |              gNB Name              |                PLMN                |
   |    1   |              Connected             |               0x0E00               |               gNB-oai              |               262,99               |
   |------------------------------------------------------------------------------------------------------------------------------------------------------------|

   |-----------------------------------------------------------------------------------------------------------------------------------------------------------|
   |---------------------------------------------------------------------UEs' Information----------------------------------------------------------------------|
   |  Index |     5GMM State     |        IMSI        |        GUTI        |   RAN UE NGAP ID   |   AMF UE NGAP ID   |        PLMN        |       Cell Id      |
   |    -   |          -         |          -         |          -         |          -         |          -         |          -         |          -         |
   |-----------------------------------------------------------------------------------------------------------------------------------------------------------|

[2026-02-11 18:58:41.179] [amf_app] [info]
   |------------------------------------------------------------------------------------------------------------------------------------------------------------|
   |----------------------------------------------------------------------gNBs' Information---------------------------------------------------------------------|
   |  Index |               Status               |              Global Id             |              gNB Name              |                PLMN                |
   |    1   |              Connected             |               0x0E00               |               gNB-oai              |               262,99               |
   |------------------------------------------------------------------------------------------------------------------------------------------------------------|

   |-----------------------------------------------------------------------------------------------------------------------------------------------------------|
   |---------------------------------------------------------------------UEs' Information----------------------------------------------------------------------|
   |  Index |     5GMM State     |        IMSI        |        GUTI        |   RAN UE NGAP ID   |   AMF UE NGAP ID   |        PLMN        |       Cell Id      |
   |    -   |          -         |          -         |          -         |          -         |          -         |          -         |          -         |
   |-----------------------------------------------------------------------------------------------------------------------------------------------------------|

[2026-02-11 18:59:01.179] [amf_app] [info]
   |------------------------------------------------------------------------------------------------------------------------------------------------------------|
   |----------------------------------------------------------------------gNBs' Information---------------------------------------------------------------------|
   |  Index |               Status               |              Global Id             |              gNB Name              |                PLMN                |
   |    1   |              Connected             |               0x0E00               |               gNB-oai              |               262,99               |
   |------------------------------------------------------------------------------------------------------------------------------------------------------------|

   |-----------------------------------------------------------------------------------------------------------------------------------------------------------|
   |---------------------------------------------------------------------UEs' Information----------------------------------------------------------------------|
   |  Index |     5GMM State     |        IMSI        |        GUTI        |   RAN UE NGAP ID   |   AMF UE NGAP ID   |        PLMN        |       Cell Id      |
   |    -   |          -         |          -         |          -         |          -         |          -         |          -         |          -         |
   |-----------------------------------------------------------------------------------------------------------------------------------------------------------|

[2026-02-11 18:59:21.180] [amf_app] [info]
   |------------------------------------------------------------------------------------------------------------------------------------------------------------|
   |----------------------------------------------------------------------gNBs' Information---------------------------------------------------------------------|
   |  Index |               Status               |              Global Id             |              gNB Name              |                PLMN                |
   |    1   |              Connected             |               0x0E00               |               gNB-oai              |               262,99               |
   |------------------------------------------------------------------------------------------------------------------------------------------------------------|

   |-----------------------------------------------------------------------------------------------------------------------------------------------------------|
   |---------------------------------------------------------------------UEs' Information----------------------------------------------------------------------|
   |  Index |     5GMM State     |        IMSI        |        GUTI        |   RAN UE NGAP ID   |   AMF UE NGAP ID   |        PLMN        |       Cell Id      |
   |    -   |          -         |          -         |          -         |          -         |          -         |          -         |          -         |
   |-----------------------------------------------------------------------------------------------------------------------------------------------------------|

^Clabuser@gx10-e8df:~/sionna-rk/scripts$

[SebastianCa]

I agree; the AMF log looks fine.

I would suggest to test the rfsim mode next.

[rgeeva]

@SebastianCa Tried the RFSim mode and get similar results. Critical errors exist between them both.....

[LOADER] library libtelnetsrv_gnb.so is not loaded: This is the most critical issue. This library is essential for the gNB to properly interface with the RF hardware or manage network functions. Even though the gNB appears to proceed through RACH, RRC, and initial NGAP steps, the absence of this library likely prevents the final, successful registration acceptance or full operational capability required by the network. The system might be able to perform some basic connection steps without it, but it's a fundamental dependency failure.
[PHY] I No prs_config configuration found..!!: This missing PRACH configuration can also contribute to instability or prevent proper synchronization and initial access, potentially hindering the overall registration process or leading to subsequent failures.

Any suggestions? I'm a little confused as to why I'm seeing this as I've gone through the outlined setup procedures on the Sionna github quickstart instructions.

[SebastianCa]

Hi @rgeeva,
as it already fails in rfsim mode, this should be unrelated to the RF hardware.
Are you sure that you are using the default configs? Could you please paste the content of the config/rfsim/.env.

[rgeeva]

Seems to be empty

[rgeeva]

Thanks for the clarification and continued support @SebastianCa . See the screen cap below.

labuser@gx10-e8df:~/sionna-rk/config/rfsim$ cat .env
# =============================================================================
# Config Files
# =============================================================================

SYSTEM_CONFIG="../common/sys_config.yaml"
# Changing the number of PRBs requires to also update accordingly the UE_EXTRA_OPTIONS parameter below
GNB_CONFIG="../common/gnb.sa.band78.106prbs.conf"


# =============================================================================
# Image Tags
# =============================================================================

GNB_IMAGE=oai-gnb-cuda
UE_IMAGE=oai-nr-ue-cuda

GNB_TAG=latest
UE_TAG=latest
AMF_TAG=v2.1.10
SMF_TAG=v2.1.10
UPF_TAG=v2.1.10
TRFGEN_TAG=latest
FLEXRIC_TAG=latest

# =============================================================================
# gNB Extra Options
# =============================================================================

# note that this is platform specific
GNB_THREAD_POOL="--thread-pool ${SRK_THREAD_POOL:-6,7,8,9,10,11}"

#GNB_EXTRA_OPTIONS="--loader.ldpc.shlibversion _cuda"

# --- Tutorials (activate by loading the library) ---
# CUDA LDPC
#GNB_EXTRA_OPTIONS="--loader.ldpc.shlibversion _cuda"

# Demapper
#GNB_EXTRA_OPTIONS="--loader.demapper.shlibversion _orig"
#GNB_EXTRA_OPTIONS="--loader.demapper.shlibversion _capture"
#GNB_EXTRA_OPTIONS="--loader.demapper.shlibversion _trt --MACRLCs.[0].dl_max_mcs 10 --MACRLCs.[0].ul_max_mcs 10"

# Neural Receiver
# works best with 24 PRBs
#GNB_EXTRA_OPTIONS="--loader.receiver.shlibversion _trt --MACRLCs.[0].ul_max_mcs 10"

# =============================================================================
# UE Extra Options (soft-UE only)
# =============================================================================

UE_EXTRA_OPTIONS="-C 3319680000 -r 106 --numerology 1 --ssb 516 --thread-pool ${SRK_UE_THREAD_POOL:-3,4}"

# --- PRB configs (uncomment one to replace UE_EXTRA_OPTIONS above) ---
#UE_EXTRA_OPTIONS="-C 3604800000 -r 24 --numerology 1 --ssb 24 --thread-pool ${SRK_UE_THREAD_POOL:-3,4}"
#UE_EXTRA_OPTIONS="-C 3309480000 -r 51 --numerology 1 --ssb 238 --thread-pool ${SRK_UE_THREAD_POOL:-3,4}"
#UE_EXTRA_OPTIONS="-C 3319680000 -r 106 --numerology 1 --ssb 516 --thread-pool ${SRK_UE_THREAD_POOL:-3,4}"

# =============================================================================
# B200/USRP Hardware Configuration
# =============================================================================

USE_B2XX=no

# =============================================================================
# RFSIM Configuration
# =============================================================================

GNB_RF_OPTIONS="--rfsim"
UE_RF_OPTIONS="--rfsim --telnetsrv --rfsimulator.serveraddr 192.168.71.140"

[rgeeva]

[SebastianCa]

This seems to be ok (default config). Can you now please post the docker logs -f oai-gnb after starting the system in rfsim mode?

[rgeeva]

[
OAIgNBlogsFeb23.txt
](url)

[SebastianCa]

From the logs you shared, the UE appears to be in sync and everything looks fine.

You can verify that the UE has been assigned an IP address by running docker exec -ti oai-nr-ue ifconfig

You should see the oaitun_ue1 interface with IP address 12.1.1.2.