Comments (21)
hududed
commented on July 24, 2024
2
I think I solved it. So in contrast to the tutorial, I didnt have to change any IP addresses at all (in AMF, UPF etc) (I guess since its a single host machine). I just updated the rest (TAC PLMN etc) following srsran.
❯ sudo ip netns exec ue1 ip route add default via 10.45.1.1 dev tun_srsue
❯ sudo ip addr add 10.45.1.1/24 dev ogstun # this was important
❯ sudo ip netns exec ue1 ping 10.45.1.1 -c4
PING 10.45.1.1 (10.45.1.1) 56(84) bytes of data.
64 bytes from 10.45.1.1: icmp_seq=1 ttl=64 time=32.7 ms
64 bytes from 10.45.1.1: icmp_seq=2 ttl=64 time=25.3 ms
64 bytes from 10.45.1.1: icmp_seq=3 ttl=64 time=35.0 ms
64 bytes from 10.45.1.1: icmp_seq=4 ttl=64 time=24.6 ms
--- 10.45.1.1 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3004ms
Thanks for the help @pgawlowicz !
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pgawlowicz
commented on July 24, 2024
ping should work. Could you check UE routing table?
sudo ip netns exec ue1 route -n
Do you have another instance of open5gs (installed manually) running on the PC?
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hududed
commented on July 24, 2024
❯ route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.0.0.1 0.0.0.0 UG 20600 0 0 wlp69s0
10.0.0.0 0.0.0.0 255.255.255.0 U 600 0 0 wlp69s0
10.7.0.0 0.0.0.0 255.255.248.0 U 0 0 0 nordtun
10.45.0.0 10.53.1.2 255.255.255.0 UG 0 0 0 nordtun
10.53.1.0 0.0.0.0 255.255.255.0 U 0 0 0 nordtun
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 wlp69s0
❯ sudo ip netns exec ue1 ip route add default via 10.45.1.1 dev tun_srsue
❯ sudo ip netns exec ue1 route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.45.1.1 0.0.0.0 UG 0 0 0 tun_srsue
10.45.1.0 0.0.0.0 255.255.255.0 U 0 0 0 tun_srsue
I am pretty sure I installed and am running just one instance of it. Is there a way to double check?
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pgawlowicz
commented on July 24, 2024
what is this route?
10.7.0.0 0.0.0.0 255.255.248.0 U 0 0 0 nordtun
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hududed
commented on July 24, 2024
Seems to be specific to my VPN. Unfortunately, I couldn't find a way to get this running without nordtun interface. Not sure how to properly set up ogstun interface
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pgawlowicz
commented on July 24, 2024
then your traffic goes to the VPN interface. Could you disable the VPN and test?
Did you use the dockerized Open5gs versoin? see here: https://docs.srsran.com/projects/project/en/latest/tutorials/source/srsUE/source/index.html#open5gs-core
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hududed
commented on July 24, 2024
Ok so I was able to run it without the VPN but ping still doesnt work (but with UE gnb traffic)
❯ sudo ip netns exec ue1 route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.45.1.1 0.0.0.0 UG 0 0 0 tun_srsue
10.45.1.0 0.0.0.0 255.255.255.0 U 0 0 0 tun_srsue
❯ sudo ip netns exec ue1 ping 10.45.1.1 -c4
PING 10.45.1.1 (10.45.1.1) 56(84) bytes of data.
--- 10.45.1.1 ping statistics ---
4 packets transmitted, 0 received, 100% packet loss, time 3074ms
❯ route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.0.0.1 0.0.0.0 UG 600 0 0 wlp69s0
10.0.0.0 0.0.0.0 255.255.255.0 U 600 0 0 wlp69s0
10.45.0.0 10.53.1.2 255.255.255.0 UG 0 0 0 ogstun
10.45.1.1 10.0.0.1 255.255.255.255 UGH 0 0 0 wlp69s0
10.53.1.0 0.0.0.0 255.255.255.0 U 0 0 0 ogstun
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 wlp69s0
I did try the open5gs docker first and we did go at length not being able to reproduce it (see here) - this is why I tried to run it manually instead. I did triple-checked and updated all the default open5gs configs to srsRAN configs open5gs-5gc.yaml
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pgawlowicz
commented on July 24, 2024
Why do you have those two routes?
10.0.0.0 0.0.0.0 255.255.255.0 U 600 0 0 wlp69s0
...
10.45.1.1 10.0.0.1 255.255.255.255 UGH 0 0 0 wlp69s0
Can you remove it?
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hududed
commented on July 24, 2024
So I restarted so I'll show you what routes are there step by step:
- fresh restart
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.0.0.1 0.0.0.0 UG 600 0 0 wlp69s0
10.0.0.0 0.0.0.0 255.255.255.0 U 600 0 0 wlp69s0
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 wlp69s0
- Run all open5gs components:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.0.0.1 0.0.0.0 UG 600 0 0 wlp69s0
10.0.0.0 0.0.0.0 255.255.255.0 U 600 0 0 wlp69s0
10.45.0.0 0.0.0.0 255.255.0.0 U 0 0 0 ogstun
10.45.0.0 0.0.0.0 255.255.0.0 U 0 0 0 ogstun
10.53.1.0 0.0.0.0 255.255.255.0 U 0 0 0 wlp69s0
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 wlp69s0
Not sure why ogstun routes are there, but I assume its from smf and amf:
❯ grep "10.45." /etc/open5gs/*
grep: /etc/open5gs/backup: Is a directory
grep: /etc/open5gs/hnet: Is a directory
/etc/open5gs/smf.yaml: - subnet: 10.45.0.1/24
/etc/open5gs/smf.yaml: gateway: 10.45.0.1
grep: /etc/open5gs/tls: Is a directory
/etc/open5gs/upf.yaml: - subnet: 10.45.0.1/24
/etc/open5gs/upf.yaml: gateway: 10.45.0.1
- After gnb and ue ran:
❯ sudo ip ro add 10.45.0.0/24 via 10.53.1.2
❯ route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.0.0.1 0.0.0.0 UG 600 0 0 wlp69s0
10.0.0.0 0.0.0.0 255.255.255.0 U 600 0 0 wlp69s0
10.45.0.0 10.53.1.2 255.255.255.0 UG 0 0 0 wlp69s0
10.45.0.0 0.0.0.0 255.255.0.0 U 0 0 0 ogstun
10.45.0.0 0.0.0.0 255.255.0.0 U 0 0 0 ogstun
10.53.1.0 0.0.0.0 255.255.255.0 U 0 0 0 wlp69s0
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 wlp69s0
❯ sudo ip netns exec ue1 ip route add default via 10.45.1.1 dev tun_srsue
❯ sudo ip netns exec ue1 route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.45.1.1 0.0.0.0 UG 0 0 0 tun_srsue
10.45.1.0 0.0.0.0 255.255.255.0 U 0 0 0 tun_srsue
❯ sudo ip netns exec ue1 ping 10.45.1.1 -c4
PING 10.45.1.1 (10.45.1.1) 56(84) bytes of data.
--- 10.45.1.1 ping statistics ---
4 packets transmitted, 0 received, 100% packet loss, time 3069ms
- Delete some routes:
❯ sudo ip route del 10.0.0.0/24 dev wlp69s0
❯ sudo ip route del 10.45.0.0/16 dev ogstun
❯ route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.0.0.1 0.0.0.0 UG 600 0 0 wlp69s0
10.45.0.0 10.53.1.2 255.255.255.0 UG 0 0 0 wlp69s0
10.45.0.0 0.0.0.0 255.255.0.0 U 0 0 0 ogstun
10.53.1.0 0.0.0.0 255.255.255.0 U 0 0 0 wlp69s0
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 wlp69s0
❯ sudo ip netns exec ue1 ping 10.45.1.1 -c4
PING 10.45.1.1 (10.45.1.1) 56(84) bytes of data.
--- 10.45.1.1 ping statistics ---
4 packets transmitted, 0 received, 100% packet loss, time 3076ms
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pgawlowicz
commented on July 24, 2024
could you try:
sudo ip ro add 10.45.0.0/24 via 10.53.1.2 dev ogstun
instead of
sudo ip ro add 10.45.0.0/24 via 10.53.1.2
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hududed
commented on July 24, 2024
Sorry, wasn't too sure if it mattered with the /16 or /24 set in open5gs and srsran, so I made them all consistent /16:
❯ sudo ip ro add 10.45.0.0/16 via 10.53.1.2 dev ogstun
Error: Nexthop has invalid gateway.
❯ sudo ip ro add 10.45.0.0/24 via 10.53.1.2 dev ogstun
Error: Nexthop has invalid gateway.
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pgawlowicz
commented on July 24, 2024
indeed it should be:
sudo ip ro add 10.45.0.0/16 via 10.53.1.2 dev ogstun
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pgawlowicz
commented on July 24, 2024
ah wait, do you run the dockerized version of the Open5gs?
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hududed
commented on July 24, 2024
No its a local instance - the docker didnt work for me
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pgawlowicz
commented on July 24, 2024
ok, then you do not need the sudo ip ro add 10.45.0.0/16 via 10.53.1.2 dev ogstun this route at all.
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hududed
commented on July 24, 2024
❯ sudo ip netns exec ue1 ip route add default via 10.45.1.1 dev tun_srsue
❯ route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.0.0.1 0.0.0.0 UG 600 0 0 wlp69s0
10.0.0.0 0.0.0.0 255.255.255.0 U 600 0 0 wlp69s0
10.45.0.0 0.0.0.0 255.255.0.0 U 0 0 0 ogstun
10.45.0.0 0.0.0.0 255.255.0.0 U 0 0 0 ogstun
10.53.0.0 0.0.0.0 255.255.0.0 U 0 0 0 wlp69s0
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 wlp69s0
❯ sudo ip netns exec ue1 route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.45.1.1 0.0.0.0 UG 0 0 0 tun_srsue
10.45.1.0 0.0.0.0 255.255.255.0 U 0 0 0 tun_srsue
❯ sudo ip netns exec ue1 ping 10.45.1.1 -c4
PING 10.45.1.1 (10.45.1.1) 56(84) bytes of data.
--- 10.45.1.1 ping statistics ---
4 packets transmitted, 0 received, 100% packet loss, time 3059ms
Got excited there but still the same - could you check if I need to delete some of these routes?
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pgawlowicz
commented on July 24, 2024
why there are two same routes?
10.45.0.0 0.0.0.0 255.255.0.0 U 0 0 0 ogstun
10.45.0.0 0.0.0.0 255.255.0.0 U 0 0 0 ogstun
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hududed
commented on July 24, 2024
Hm, that was peculiar - so I reran the open5gs component 1 by 1 (in the order given in the open5gs tutorial), and the two ogstun are created when I ran upf:
❯ sudo systemctl start open5gs-sgwud
❯ route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.0.0.1 0.0.0.0 UG 600 0 0 wlp69s0
10.0.0.0 0.0.0.0 255.255.255.0 U 600 0 0 wlp69s0
10.53.0.0 0.0.0.0 255.255.0.0 U 0 0 0 wlp69s0
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 wlp69s0
❯ sudo systemctl start open5gs-upfd
❯ route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.0.0.1 0.0.0.0 UG 600 0 0 wlp69s0
10.0.0.0 0.0.0.0 255.255.255.0 U 600 0 0 wlp69s0
10.45.0.0 0.0.0.0 255.255.0.0 U 0 0 0 ogstun
10.45.0.0 0.0.0.0 255.255.0.0 U 0 0 0 ogstun
10.53.0.0 0.0.0.0 255.255.0.0 U 0 0 0 wlp69s0
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 wlp69s0
I am not sure why its creating these. This is the config for upf
❯ sudo vi /etc/open5gs/upf.yaml
logger:
file:
path: /var/log/open5gs/all.log
global:
max:
ue: 1024 # The number of UE can be increased depending on memory size.
upf:
pfcp:
server:
- address: 127.0.0.7
client:
smf: # UPF PFCP Client try to associate SMF PFCP Server
- address: 127.0.0.4
gtpu:
server:
- address: 10.53.1.2 #127.0.0.7
#advertise: 127.0.0.8
session:
- subnet: 10.45.0.1/16 #10.45.0.0/16
gateway: 10.45.0.1
- subnet: 2001:db8:cafe::/48
gateway: 2001:db8:cafe::1
metrics:
server:
- address: 127.0.0.7
port: 9090
Should I delete those?
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pgawlowicz
commented on July 24, 2024
why did you set this:
gtpu:
server:
- address: 10.53.1.2 #127.0.0.7
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hududed
commented on July 24, 2024
Well I followed everything in srsran config, but I suppose that was meant for docker? Not sure which to include and which not to.
#srsran_Project/docker/open5gs-5gc.yaml
mme:
s1ap:
server:
- address: ${OPEN5GS_IP}
gtpc:
server:
- address: ${OPEN5GS_IP}
...
amf:
ngap:
server:
- address: ${OPEN5GS_IP}
upf:
...
gtpu:
server:
- address: ${OPEN5GS_IP}
❯ grep "10.53.1." /etc/open5gs/*
/etc/open5gs/amf.yaml: - address: 10.53.1.2
/etc/open5gs/mme.yaml: - address: 10.53.1.2
/etc/open5gs/mme.yaml: - address: 10.53.1.2
/etc/open5gs/upf.yaml: - address: 10.53.1.2 #127.0.0.7
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pgawlowicz
commented on July 24, 2024
yes, this is meant for the docker-based setup. Please just follow this tutorial: https://open5gs.org/open5gs/docs/guide/01-quickstart/
In addition, our Amarisoft UE tutorial uses Open5gs installed manually: https://docs.srsran.com/projects/project/en/latest/tutorials/source/amariUE/source/index.html#id6
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