[srslte-users] srsue to oai enb + epc problem

Harsha Chenji cjkernel at gmail.com
Wed Aug 30 16:16:58 UTC 2017


The packets might be getting dropped at the tun_srsue and hence it
doesn't show up on your console. Could be because of the source
IP/MAC.

Do you have another active connections on the pc with tun_srsue? Try
shutting them down...

On Wed, Aug 30, 2017 at 11:18 AM, Nicola Bui <n.bui at northeastern.edu> wrote:
> Hi Harsha,
>
> I think you are right.
> The pings enter the tun_srsue interface (172.16.0.2) and exits the gtp0
> (172.16.0.1) on the other side
> The replies enter the gtp0 on the other side, but do not exit from the
> tun_srsue interface
>
> with ip route I have two entries for 172.16.0.0/12:
> 172.16.0.0/12 dev gtp0  proto static
> 172.16.0.0/12 dev gtp0  proto kernel scope link src 172.16.0.1
>
> The spgw is on the localhost: 127.0.200.1
>
> Any other suggestion?
>
> Thanks,
>
> Nicola Bui
> Senior Research Scientist
> College of Computer and Information Science
> 202 West Village H
> 360 Huntington Avenue
> Boston, MA 02115
>
> On Tue, Aug 29, 2017 at 11:38 PM, Harsha Chenji <cjkernel at gmail.com> wrote:
>>
>> We had this issue:
>>
>> 1. see if the pings are exiting the tun_srsue interface (using wireshark)
>> 2. see if the pings are arriving at the other side of the tunnel on
>> the epc (using wireshark)
>> 3. repeat for ping replies
>> 4. check if the routes are setup properly on the spgw/epc (using ip -r
>> etc.).
>>
>> My guess is there's a subnetting/DHCP/static route problem on the spgw.
>>
>> On Tue, Aug 29, 2017 at 4:57 PM, Nicola Bui <n.bui at northeastern.edu>
>> wrote:
>> > Dear all,
>> >
>> > I am trying to have srsue connected to an openairinterface eNB (+ EPC).
>> > The setup is working and after the successful connection (RRC connection
>> > and
>> > Network Attachment) I can see the tun_srsue interface.
>> > However I was not able to use the interface to ping any device on the
>> > other
>> > side of the link. Any suggestion about how to configure it?
>> >
>> > Thanks a lot,
>> > Nicola Bui
>> > Senior Research Scientist
>> > College of Computer and Information Science
>> > 202 West Village H
>> > 360 Huntington Avenue
>> > Boston, MA 02115
>> >
>> > _______________________________________________
>> > srslte-users mailing list
>> > srslte-users at lists.softwareradiosystems.com
>> > http://www.softwareradiosystems.com/mailman/listinfo/srslte-users
>> >
>
>


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