Not serviced TMSI if used unknown APN about open5gs HOT 9 CLOSED

I assumed that you might add the default APN as corenet using Web User Interface. Right?
And then, UE try to connect MME with APN anritsu. If UE sends with same TMSI and different APN, how MME responds it? I'll study spec about it.

And also, could you give me a mongo DB data? You can get it with the followings executions.

$ mongc

Mongo shell> db.subscribers.find()

Thanks!

from open5gs.

Yes, by default, in mongo db set APN corenet.
After changing the APN in UE, the MME did not respond to the same TMSI.

from open5gs.

Did you insert APN(anrtisu) information to the MongoDB?

from open5gs.

No. After fail I changed APN in UE (anritsu -> corenet).

from open5gs.

Ok! Let us start to study the specification document for this case.

Thanks!

from open5gs.

We think that all APNs that the UE wants to connect to should be set up in MongoDB in advance. If the APN information is not in the HSS even though the TMSI is the same, the PDN connectivity reject is transmitted to the UE. If there is anything we know wrong, let us know.

Please, add anritsu APN using WebUI.
Then, it is possible to connect even if it is connected to the Unknown APN first.

Note that we have not implemented Insert/Delete Subscriber Data (S6A). Therefore, even if the subscriber information is changed to the WebUI for the already connected UE, it is not applicable. In this case, both NextEPC and eNodeB must be restarted after updating subscription information.

Thanks!

from open5gs.

In this case, I do not understand why repeated requests are ignored by the MME. This is more than illogical and like a denial of service.

from open5gs.

Currently, NextEPC does not properly handle the RESET message. We'll change the S1AP encoder/decoder to solve this. We are working hard to stabilize it. It will be released soon.

If you want to check whether RESET message is working normally, you can try the following procedure.

git clone https://github.com/acetcom/nextepc nextepc.s1ap
cd nextepc.s1ap
git checkout s1ap
autoreconf -if;./configure --prefix=`pwd`/install;make -j2
make install
(Update your nextepc.conf)
./nextepc-epcd

We're expecting the RESET message to be handled well in the s1ap branch.

Thanks!

from open5gs.

yes, successfully

from open5gs.