TTCN3 tests for MME (was Re: CS Fallback in NextEPC)

Harald Welte laforge at
Fri Jul 12 03:36:29 UTC 2019

Hi Sukchan,

On Fri, Jul 12, 2019 at 07:19:35AM +0900, 이석찬 wrote:

> 2019. 7. 12. 오전 1:47, Harald Welte <laforge at> 작성:
> > btw/unrelated: I've been hacking a lot on TTCN-3 tests for the MME, and
> > I've managed to get the way into NAS (EMM/ESM) and am getting all the
> > way up to a Attach Reject (see attached pcap).  As I'm only simulating
> > S1AP and SGsAP so far (and not diameter), it's expected that the attach
> > will be rejected.  I guess I'll start with using nextepc-hss first, and
> > add diameter support to the tests only in a later step.
> There is no pcap file. Could you attach it?
> Thanks!

Sorry, please find it attached.  It's not much, but it shows that the basic
S1AP and NAS infrastructure for emulating eNB and UE works.  I sill have
to write quite a bit of code to actually perform the authentication
successful, as well as to implement at least integrity protection on the
NAS layer.

- Harald Welte <laforge at> 
"Privacy in residential applications is a desirable marketing option."
                                                  (ETSI EN 300 175-7 Ch. A6)
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