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srsran / srsRAN_Project

Open source O-RAN 5G CU/DU solution from Software Radio Systems (SRS) https://docs.srsran.com/projects/project
https://www.srsran.com
GNU Affero General Public License v3.0
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Getting PDU Session Establishment Reject on MultiUE setup with ZMQ #866

Closed goyban closed 1 month ago

goyban commented 1 month ago

Issue Description

Hello everyone, I'm trying to test the multi UE emulation with ZMQ explained here, but when I start the flow using GNR, UEs don't get their IP addresses and I get this error: PDU Session Establishment Reject with cause: Network failure

Setup Details

I'm running this test on an Ubuntu 22.04 machine. Details: CPU: 11th Gen Intel i5-1145G7 RAM: 32 GB srsRAN: commit 9d5dd742a

Expected Behavior

I expect to get this output on the UE side after starting the flow:

...
Random Access Transmission: prach_occasion=0, preamble_index=45, ra-rnti=0x39, tti=174
Random Access Complete.     c-rnti=0x4602, ta=0
RRC Connected
PDU Session Establishment successful. IP: 10.45.1.2
RRC NR reconfiguration successful.

Actual Behaviour

I get this on all my UEs:

Random Access Transmission: prach_occasion=0, preamble_index=32, ra-rnti=0x39, tti=174
Random Access Complete.     c-rnti=0x4602, ta=0
RRC Connected
PDU Session Establishment Reject with cause: Network failure
Received RRC Release

Steps to reproduce the problem

All config files are used from the tutorial here, no change.

Additional Information

I ran the ZMQ-based setup without any problem, UE assigned an IP address, I managed to ping and run iperf in both direction. The problem exist when running MultiUE simulation.

Here are logs related to my setup: gnb.log O5gs.log ue1.log ue2.log ue3.log

pgawlowicz commented 1 month ago

sth is wrong with the core network:

open5gs_5gc  | 10/15 12:42:32.349: [gmm] INFO: Registration request (../src/amf/gmm-sm.c:1165)
open5gs_5gc  | 10/15 12:42:32.349: [gmm] INFO: [suci-0-001-01-0000-0-0-0123456780]    SUCI (../src/amf/gmm-handler.c:166)
open5gs_5gc  | 10/15 12:42:32.793: [gmm] INFO: [imsi-001010123456790] Registration complete (../src/amf/gmm-sm.c:2146)
open5gs_5gc  | 10/15 12:42:32.793: [amf] INFO: [imsi-001010123456790] Configuration update command (../src/amf/nas-path.c:612)
open5gs_5gc  | 10/15 12:42:32.793: [gmm] INFO:     UTC [2024-10-15T12:42:32] Timezone[0]/DST[0] (../src/amf/gmm-build.c:559)
open5gs_5gc  | 10/15 12:42:32.793: [gmm] INFO:     LOCAL [2024-10-15T12:42:32] Timezone[0]/DST[0] (../src/amf/gmm-build.c:564)
open5gs_5gc  | 10/15 12:42:32.793: [amf] INFO: [Added] Number of AMF-Sessions is now 1 (../src/amf/context.c:2571)
open5gs_5gc  | 10/15 12:42:32.793: [gmm] INFO: UE SUPI[imsi-001010123456790] DNN[srsapn] S_NSSAI[SST:1 SD:0xffffff] smContextRef [NULL] (../src/amf/gmm-handler.c:1241)
open5gs_5gc  | 10/15 12:42:32.793: [gmm] INFO: SMF Instance [d34fcc60-8af2-41ef-8074-5da16103f9e5] (../src/amf/gmm-handler.c:1280)
open5gs_5gc  | 10/15 12:42:32.794: [smf] INFO: [Added] Number of SMF-UEs is now 1 (../src/smf/context.c:1019)
open5gs_5gc  | 10/15 12:42:32.794: [smf] INFO: [Added] Number of SMF-Sessions is now 1 (../src/smf/context.c:3068)
open5gs_5gc  | 10/15 12:42:32.800: [smf] ERROR: No UPFs are PFCP associated that are suited to RR (../src/smf/context.c:1167)
open5gs_5gc  | 10/15 12:42:32.800: [smf] ERROR: [imsi-001010123456790:1] No associated UPF (../src/smf/npcf-handler.c:442)
open5gs_5gc  | 10/15 12:42:32.800: [smf] ERROR: smf_npcf_smpolicycontrol_handle_create() failed (../src/smf/gsm-sm.c:528)
open5gs_5gc  | 10/15 12:42:32.801: [amf] ERROR: [1:0] PDU session establishment reject (../src/amf/namf-handler.c:482)
open5gs_5gc  | 10/15 12:42:32.801: [amf] WARNING: [suci-0-001-01-0000-0-0-0123456790] DL NAS transport (../src/amf/nas-path.c:1014)
open5gs_5gc  | 10/15 12:42:32.801: [amf] INFO: [Removed] Number of AMF-Sessions is now 0 (../src/amf/context.c:2578)
open5gs_5gc  | 10/15 12:42:32.802: [smf] INFO: Removed Session: UE IMSI:[imsi-001010123456790] DNN:[srsapn:1] IPv4:[10.45.1.4] IPv6:[] (../src/smf/context.c:1672)
open5gs_5gc  | 10/15 12:42:32.802: [smf] INFO: [Removed] Number of SMF-Sessions is now 0 (../src/smf/context.c:3076)
open5gs_5gc  | 10/15 12:42:32.802: [smf] INFO: [Removed] Number of SMF-UEs is now 0 (../src/smf/context.c:1080)
open5gs_5gc  | 10/15 12:42:32.953: [gmm] INFO: [imsi-001010123456790] No GUTI allocated (../src/amf/gmm-sm.c:1443)
open5gs_5gc  | 10/15 12:42:32.953: [gmm] INFO: [imsi-001010123456780] Registration complete (../src/amf/gmm-sm.c:2146)
open5gs_5gc  | 10/15 12:42:32.953: [amf] INFO: [imsi-001010123456780] Configuration update command (../src/amf/nas-path.c:612)
open5gs_5gc  | 10/15 12:42:32.953: [gmm] INFO:     UTC [2024-10-15T12:42:32] Timezone[0]/DST[0] (../src/amf/gmm-build.c:559)
open5gs_5gc  | 10/15 12:42:32.953: [gmm] INFO:     LOCAL [2024-10-15T12:42:32] Timezone[0]/DST[0] (../src/amf/gmm-build.c:564)
open5gs_5gc  | 10/15 12:42:32.953: [amf] INFO: [Added] Number of AMF-Sessions is now 1 (../src/amf/context.c:2571)
open5gs_5gc  | 10/15 12:42:32.953: [gmm] INFO: UE SUPI[imsi-001010123456780] DNN[srsapn] S_NSSAI[SST:1 SD:0xffffff] smContextRef [NULL] (../src/amf/gmm-handler.c:1241)
open5gs_5gc  | 10/15 12:42:32.953: [gmm] INFO: SMF Instance [d34fcc60-8af2-41ef-8074-5da16103f9e5] (../src/amf/gmm-handler.c:1280)
open5gs_5gc  | 10/15 12:42:32.953: [amf] INFO: InitialUEMessage (../src/amf/ngap-handler.c:401)
open5gs_5gc  | 10/15 12:42:32.953: [amf] INFO: [Added] Number of gNB-UEs is now 3 (../src/amf/context.c:2550)
open5gs_5gc  | 10/15 12:42:32.953: [amf] INFO:     RAN_UE_NGAP_ID[2] AMF_UE_NGAP_ID[3] TAC[7] CellID[0x66c000] (../src/amf/ngap-handler.c:562)
open5gs_5gc  | 10/15 12:42:32.953: [amf] INFO: [suci-0-001-01-0000-0-0-0123456791] Unknown UE by SUCI (../src/amf/context.c:1835)
open5gs_5gc  | 10/15 12:42:32.953: [amf] INFO: [Added] Number of AMF-UEs is now 3 (../src/amf/context.c:1616)

It seems that UPF is not running and PDU session establishments are rejected.

goyban commented 1 month ago

sth is wrong with the core network:

Thank you! I found the problem. I used the edited .env file directly from here.

This is the modified .env file (for 3 UEs):

MONGODB_IP=127.0.0.1
OPEN5GS_IP=10.53.1.2
UE_IP_BASE=10.45.0
DEBUG=false
SUBSCRIBER_DB="subscriber_db.csv"

and this is the original .evn file (for 1 UE):

MONGODB_IP=127.0.0.1
OPEN5GS_IP=10.53.1.2
UE_IP_BASE=10.45.0
UPF_ADVERTISE_IP=10.53.1.2
DEBUG=false
SUBSCRIBER_DB=001010123456780,00112233445566778899aabbccddeeff,opc,63bfa50ee6523365ff14c1f45f88737d,8000,9,10.45.1.2
NETWORK_NAME_FULL=srsRAN
NETWORK_NAME_SHORT=srsRAN

# Timezone - this setting will also be conveyed by Open5GS towards UE via "configuration update command"; comment for UTC
TZ=Europe/Madrid

I just added the missing parts (the UPF Advertise IP should be added: UPF_ADVERTISE_IP=10.53.1.2) and now all UEs get their IP address. This is how my .env file looks like:

MONGODB_IP=127.0.0.1
OPEN5GS_IP=10.53.1.2
UE_IP_BASE=10.45.0
UPF_ADVERTISE_IP=10.53.1.2 #main part missing
DEBUG=false
NETWORK_NAME_FULL=srsRAN #optional
NETWORK_NAME_SHORT=srsRAN #optional
SUBSCRIBER_DB="subscriber_db.csv"

TZ=Europe/Madrid #optional

And the output of UE1:

Random Access Transmission: prach_occasion=0, preamble_index=34, ra-rnti=0x39, tti=174
Random Access Complete.     c-rnti=0x4601, ta=0
RRC Connected
PDU Session Establishment successful. IP: 10.45.1.2
RRC NR reconfiguration successful.

I suggest editing this .env file from this section.

pgawlowicz commented 1 month ago

great! thanks for your feedback!