This repository houses the tools and applications developed during the 5G-focused master's program. Within this repository, you'll discover the configurations employed by Open5gs within a Kubernetes cluster, along with Dockerfiles for generating the application images. Additionally, there are other details provided for the deployment of a 5G core.

Open5GS is a C-language Open Source implementation of 5GC and EPC, i.e. the core network of NR/LTE network.

These are the images employed in the project, all based on Ubuntu and each with its own unique characteristics. Further information about the images can be found in the Docker folder.

• maikovisky/open5gs:2.6.4: Use in AMF, AUSF, BSF, NSSF, PCF, SCP, SMF, UDM, UDR
• maikovisky/open5gs-upf:2.6.4: Use in UPF
• maikovisky/open5gs-webui:latest: Use in Webui
• maikovisky/ueransim:3.2.6: Use in gNB, UE

cd docker
docker build -t maikovisky/openg5s .

Install QEMU

sudo apt install -y qemu-user-static binfmt-support

Create image

docker buildx build --platform linux/amd64,linux/arm64,linux/arm/v6,linux/arm/v7  -o type=docker -t maikovisky/open5gs .

OR

docker buildx build --platform linux/amd64 --push -t maikovisky/open5gs:2.5.5 -t maikovisky/open5gs:latest .

Need insall krew and after plugin sniff

krew install krew
kubectl krew install sniff

kubectl sniff <pod>

• UPF and SMF core dump

Um problema que esta sendo enfrentado é permitir com que UE consiga acessar algum conteúdo na Internet. Para isso é necessário que o UE faça a conexção com o UPF, onde irá receber um IP e criar um tunel entre os dois. A baixo a topologia:

!(/imagens/open5gs-UE-UPF.png)

[ OK] eth0 (upf) => Internet
[ OK] uesimtun0  => ogstun
[NOK] uesimtun0  => eth0 (upf)
[NOK] ogstun     => eth0 (upf)
[NOK] ogstun     => Internet

Na máquina UPF configurar o TUN.

ip tuntap add name ogstun mode tun
ip addr add 192.168.0.1/16 dev ogstun
ip addr add 2001:db8:cafe::1/48 dev ogstun
ip link set ogstun up

Permitir o encaminhamento entre as interfaces

### Enable IPv4/IPv6 Forwarding
sysctl -w net.ipv4.ip_forward=1
sysctl -w net.ipv6.conf.all.forwarding=1

### Add NAT Rule
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

Rodar os comandos abaixo no POD UERAMSIM enquanto captura o trafego de rede usando o comando kubectl sniff <UPF_POD_ID>

ping -I uesimtun0 8.8.8.8
iperf -B 192.168.0.2 -c open5gs-iperf -w 300k
iperf -B 192.168.0.2 -c open5gs-iperf -w 300k -u
iperf -B 192.168.0.2 -c open5gs-iperf -w 300k -r
iperf -B 192.168.0.2 -c open5gs-iperf -w 300k -r -u

iperf -B 10.41.0.13 -c open5gs-iperf -t 60 -i 5 --trip-times --txstart-time $(expr $(date +%s) + 1).$(date+%N)

kubectl cp <POD_ID>:/var/tcpdump .

• Promissor
• Base do trabalho do Grabriel

UERANSIM não esta conseguindo conectar.

• (https://brito.com.br/posts/build-docker-arm64/)
• (https://bitbucket.org/infinitydon/workspace/projects/PROJ)
• (https://bitbucket.org/infinitydon/opensource-5g-core-service-mesh/src/main/)
• (https://medium.com/@googler_ram/100-opensource-5g-projects-that-you-can-get-your-hands-dirty-with-127a50967692)
• (https://open5gs.org/open5gs/docs/platform/08-alpine/)
• (https://github.com/my5G/my5G-RANTester)
• (https://github.com/PORVIR-5G-Project/my5G-RANTester)
• (https://github.com/aligungr/UERANSIM)
• (https://github.com/s5uishida/open5gs_5gc_ueransim_sample_config#overview)