UERANSIM gNB unable to communicate with Free5GMANO AMF

Q/A
,
#1

My UERANSIM is not able to communicate with my AMF. The UERANSIM gNB just gets stuck at: “Trying to establish SCTP connection… (10.244.0.192:29518)”
and is never able to connect.

  • I’m using kubernetes v1.15.3
  • AMF is “Listen on 10.244.0.142:38412”
  • UERANSIM is stuck on “Trying to establish SCTP connection… (10.244.0.142:38412)”
  • UERANSIM version is “v3.1.0”
  • netstat --sctp -tulpn on the AMF container shows that the AMF is listening on 38412.
  • I have tested using ncat to make a test server that SCTP protocol is working over my Kube container

Please help me! I am unable to figure out a solution as to why this is not working!
Please let me know if any additional information is needed. Any help would be greatly appreciated!

#2

Could you solved this?

#3

Hi, unfortunately I STILL could not solve this even after updating to v1.19 for Kubernetes! Do you have any ideas?

#4

Can you attach your upf, amf and smf config files?

#5

I used the nmctl tool to download the free5gc-stage-3.0.4 example and then deploy that. I then went inside the running AMF pod and got the IP and tried to connect the UERANSIM pod to that. Unfortunately that did not work. I am attaching everything I have.
Please note that even though “upf” says “CrashLoopBackoff” or “Error”, I was facing the same issue when it was working perfectly. This error is due to gpt5g which I know how to fix.

Thank you so much!

ueransim_configmap.yaml (2.2 KB) smf.yaml (6.0 KB) upf.yaml (14.2 KB)

#6

Attaching AMF file too.
amf.yaml (6.0 KB)

#7

Have you check this? GitHub - Orange-OpenSource/towards5gs-helm: Open-source project providing Helm charts for deploying Free5GC and UERANSIM on a Kubernetes cluster

It seems that you can use it to compare with yours

#8