UERAN container ping failed

[minziran]

I added the iptables command mentioned in https://githubmemory.com/repo/free5gc/free5gc-compose/issues/26?page=1

The ping still failed.

Thank you for your time and help!

[minziran]

@abousselmi I found 2 error messages.

1. After running docker-compose up

nrf | 2021-08-17T16:11:14Z [INFO][NRF][MGMT] Create NF Profile

nrf | 2021-08-17T16:11:14Z [INFO][NRF][MGMT] Location header: http://nrf.free5gc.org:8000/nnrf-nfm/v1/nf-instances/15cbd9c6-1167-4224-9461-31d486851da6

nrf | 2021-08-17T16:11:14Z [INFO][NRF][GIN] | 201 | 10.100.200.14 | PUT | /nnrf-nfm/v1/nf-instances/15cbd9c6-1167-4224-9461-31d486851da6 |

nrf | 2021/08/17 16:11:14 http2: server connection error from 10.100.200.13:48868: connection error: PROTOCOL_ERROR

2. After running sudo build/nr-ue -c config/free5gc-ue.yaml

sudo build/nr-ue -c config/free5gc-ue.yaml

Then I tried ping -I uesimtun0 127.0.0.1 still failed.

Thank you in advance.

[abousselmi]

The error message that you see in the NRF is caused by http2 library. According to http2 specs

Clients and servers MUST treat an invalid connection preface as a
connection error (Section 5.4.1) of type PROTOCOL_ERROR. A GOAWAY
frame (Section 6.8) MAY be omitted in this case, since an invalid
preface indicates that the peer is not using HTTP/2.

Who has the ip address 10.100.200.13 ?

[minziran]

@abousselmi Thank you for reply. The Ip address is belong to UDM container.

[abousselmi]

Hi @minziran, this is weird, I'm not sure why UDM made a wrong request to the NRF. Can you confirm whether this PROTOCOL_ERROR is due to the ueransim container somehow or not ?

[minziran]

Hi @minziran, this is weird, I'm not sure why UDM made a wrong request to the NRF. Can you confirm whether this PROTOCOL_ERROR is due to the ueransim container somehow or not ?

Thank you so much! I upgrade UERANSIM and it works.

[abousselmi]

Could you please let us know which version of UERANSIM that you upgraded to ?

[minziran]

Could you please let us know which version of UERANSIM that you upgraded to ?

git checkout v3.1.0

[free5gc-org]

This issue has been mentioned on free5GC. There might be relevant details there:

https://forum.free5gc.org/t/free5gc-http2-server-connection-error-from-ip-connection-error-protocol-error/1316/3