Comments (5)
I encountered the same problem as @phunghaduong99.
I have observed that second item in ifList (defined in upfb-configmap) is ignored on upfb startup.
upfb-configmap.yaml:
gtpu:
forwarder: gtp5g
# The IP list of the N3/N9 interfaces on this UPF
# If there are multiple connection, set addr to 0.0.0.0 or list all the addresses
ifList:
- addr: 10.100.50.233
type: N3
- addr: 10.100.50.225
type: N9
With above configuration UDP port was opened only on N3 interface:
This log shows that the ifList has been loaded during startup (anyway the forwarder started only on N3):
In another test I have changed the order of interfaces in ifList. In this case port 2152 has been opened only on N9.
Temporary solution: In the search for a solution I've checked older versions of this project. For me, the last commit in this repo with working ULCL was cb03316 from Jun 23, 2022:
from towards5gs-helm.
Hello @wito2403
Thanks for this testing and explanation. So, do you think the problem is comming from free5GC? Can you check if the UPF-b configuration (configmap) is well created with both N3 and N9 information?
Another possible solution is trying to use the same network interface and IP address for N3 and N9 interfaces. I will try it when I have time.
Many thanks,
Raouf
from towards5gs-helm.
Hello @raoufkh
Config map looks ok, it contains both N3 and N9 addresses in gtpu section.
I'm not sure if in the older version of Free5GC the address list for the gtpu forwarder, was used at all. In the screenshot I posted earlier you can see that port 2152 was opened on 0.0.0.0:2152. In the newer version, we can see that the port is only opened on a specific address (the first item in the config).
Witold
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This issue is stale because it has been open for 30 days with no activity.
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This issue was closed because it has been inactive for 14 days since being marked as stale.
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