E2SM RC xapp_oran_slice_ctrl

[vamaglog]

Hello,

I am trying to run the xapp_oran_slice_ctrl (https://gitlab.eurecom.fr/mosaic5g/flexric/-/blob/br-flexric/examples/xApp/c/control/xapp_oran_slice_ctrl.c) using the srsRAN_Project gNB, srsRAN_4G UE, open5GS and FlexRIC.

The UE is connected to the gNB via ZMQ and the gNB to the FlexRIC and to the core network, and I can send both DL and UL traffic. When I run the xapp_oran_slice_ctrl xApp, both the FlexRIC and the xAPP crash showing the following messages:

flexRIC:

xApp:

The log file from the gNB is the following:

As you see, the logs say that "RAN function ID not supported".

Could you please assist me in debugging the problem?
Thank you very much in advance.
Vasilis

[pgawlowicz]

Could you share pcap file with the E2 Control Request message sent by FlexRIC?

[vamaglog]

Hi Piotr,

Here is the E2AP pcap file as requested.
gnb_e2ap.pcap.zip

[pgawlowicz]

@vamaglog It seems that you do not have e2sm-rc module enabled in the gnb config.

[vamaglog]

you are right! I enabled the module, however I am still facing a different issue this time. Below you may see more details at the screenshots below:

flexric:

xApp:

gNB:

As you can see, the gNB crashes and as a result, the pcap file is corrupted. Wireshark says the following message: "The capture file appears to have been cut short in the middle of a packet".
In the zip file attached, I have provided the logs of the gNB in debug mode and the corrupted pcap file.

logs.zip

[pgawlowicz]

yes, there is an issue with PLMN parsing. It will be fixed in the next release.

You disable (or simply avoid) PLMN parsing if you change its RAN-parameter-ID from 7 to 20 (for example) - here

[vamaglog]

Hi Piotr,

Setting the PLMN param ID to 20 solved the issue. Thank you for the suggestion and support.

[pgawlowicz]

The issue will be fixed in the next project version.