Hi Ivan,

I tried with the specified package and the configuration files and all the modules seem to be executing properly.

Thanks a lot for the help with that.

But there is still some issue as the tunnel doesn't seem to be set up properly.

GGSN Output
......
encaps_tun. Packet received: forwarding to tun
encaps_tun. Packet received: forwarding to tun
encaps_tun. Packet received: forwarding to tun
.....

OSMO-PCU Output
...........
008> tbf.cpp:1691 LLC [PCU -> SGSN] TBF(TFI=0 TLLI=0xdeacae72 DIR=UL) len=85
<0008> tbf.cpp:1691 LLC [PCU -> SGSN] TBF(TFI=0 TLLI=0xdeacae72 DIR=UL) len=70
<0008> tbf.cpp:1691 LLC [PCU -> SGSN] TBF(TFI=0 TLLI=0xdeacae72 DIR=UL) len=71
<0008> tbf.cpp:1691 LLC [PCU -> SGSN] TBF(TFI=0 TLLI=0xdeacae72 DIR=UL) len=79
<0007> gprs_rlcmac_meas.cpp:104 UL RSSI of TLLI=0xdeacae72: -65 dBm
<0007> gprs_rlcmac_meas.cpp:104 UL RSSI of TLLI=0xdeacae72: -66 dBm
<0001> pcu_l1_if.cpp:282 RACH request received: sapi=1 qta=0, ra=121, fn=2234747
<0002> tbf.cpp:1503 TBF(TFI=0 TLLI=0x00000000 DIR=UL) changing tlli from TLLI=0x00000000 TLLI=0xdeacae72 ul_changed=0
<0008> tbf.cpp:1691 LLC [PCU -> SGSN] TBF(TFI=0 TLLI=0xdeacae72 DIR=UL) len=70
<0007> gprs_rlcmac_meas.cpp:104 UL RSSI of TLLI=0xdeacae72: -65 dBm
<0001> pcu_l1_if.cpp:282 RACH request received: sapi=1 qta=0, ra=121, fn=2234916
<0002> tbf.cpp:1503 TBF(TFI=0 TLLI=0x00000000 DIR=UL) changing tlli from TLLI=0x00000000 TLLI=0xdeacae72 ul_changed=0
<0008> tbf.cpp:1691 LLC [PCU -> SGSN] TBF(TFI=0 TLLI=0xdeacae72 DIR=UL) len=88
<0008> tbf.cpp:1691 LLC [PCU -> SGSN] TBF(TFI=0 TLLI=0xdeacae72 DIR=UL) len=71
<0007> gprs_rlcmac_meas.cpp:104 UL RSSI of TLLI=0xdeacae72: -65 dBm
<0001> pcu_l1_if.cpp:282 RACH request received: sapi=1 qta=0, ra=123, fn=2235089
<0002> tbf.cpp:1503 TBF(TFI=0 TLLI=0x00000000 DIR=UL) changing tlli from TLLI=0x00000000 TLLI=0xdeacae72 ul_changed=0
<0008> tbf.cpp:1691 LLC [PCU -> SGSN] TBF(TFI=0 TLLI=0xdeacae72 DIR=UL) len=88
<0007> gprs_rlcmac_meas.cpp:104 UL RSSI of TLLI=0xdeacae72: -65 dBm
<0001> pcu_l1_if.cpp:282 RACH request received: sapi=1 qta=0, ra=121, fn=2235910
<0002> tbf.cpp:1503 TBF(TFI=0 TLLI=0x00000000 DIR=UL) changing tlli from TLLI=0x00000000 TLLI=0xdeacae72 ul_changed=0
<0008> tbf.cpp:1691 LLC [PCU -> SGSN] TBF(TFI=0 TLLI=0xdeacae72 DIR=UL) len=88
<0008> tbf.cpp:1691 LLC [PCU -> SGSN] TBF(TFI=0 TLLI=0xdeacae72 DIR=UL) len=70
<0008> tbf.cpp:1691 LLC [PCU -> SGSN] TBF(TFI=0 TLLI=0xdeacae72 DIR=UL) len=71
<0008> tbf.cpp:1691 LLC [PCU -> SGSN] TBF(TFI=0 TLLI=0xdeacae72 DIR=UL) len=71
<0008> tbf.cpp:1691 LLC [PCU -> SGSN] TBF(TFI=0 TLLI=0xdeacae72 DIR=UL) len=81
<0008> tbf.cpp:1691 LLC [PCU -> SGSN] TBF(TFI=0 TLLI=0xdeacae72 DIR=UL) len=71
<0008> tbf.cpp:1691 LLC [PCU -> SGSN] TBF(TFI=0 TLLI=0xdeacae72 DIR=UL) len=81
<0008> tbf.cpp:1691 LLC [PCU -> SGSN] TBF(TFI=0 TLLI=0xdeacae72 DIR=UL) len=60
<0008> tbf.cpp:1691 LLC [PCU -> SGSN] TBF(TFI=0 TLLI=0xdeacae72 DIR=UL) len=60
<0008> tbf.cpp:1691 LLC [PCU -> SGSN] TBF(TFI=0 TLLI=0xdeacae72 DIR=UL) len=88
<0008> tbf.cpp:1691 LLC [PCU -> SGSN] TBF(TFI=0 TLLI=0xdeacae72 DIR=UL) len=81
<0007> gprs_rlcmac_meas.cpp:104 UL RSSI of TLLI=0xdeacae72: -66 dBm
<0001> pcu_l1_if.cpp:282 RACH request received: sapi=1 qta=0, ra=123, fn=2236160
<0002> tbf.cpp:1503 TBF(TFI=0 TLLI=0x00000000 DIR=UL) changing tlli from TLLI=0x00000000 TLLI=0xdeacae72 ul_changed=0
<0008> tbf.cpp:1691 LLC [PCU -> SGSN] TBF(TFI=0 TLLI=0xdeacae72 DIR=UL) len=88
<0008> tbf.cpp:1691 LLC [PCU -> SGSN] TBF(TFI=0 TLLI=0xdeacae72 DIR=UL) len=88
<0007> gprs_rlcmac_meas.cpp:104 UL RSSI of TLLI=0xdeacae72: -66 dBm
<0001> pcu_l1_if.cpp:282 RACH request received: sapi=1 qta=0, ra=123, fn=2236313
<0002> tbf.cpp:1503 TBF(TFI=0 TLLI=0x00000000 DIR=UL) changing tlli from TLLI=0x00000000 TLLI=0xdeacae72 ul_changed=0
<0008> tbf.cpp:1691 LLC [PCU -> SGSN] TBF(TFI=0 TLLI=0xdeacae72 DIR=UL) len=71
<0008> tbf.cpp:1691 LLC [PCU -> SGSN] TBF(TFI=0 TLLI=0xdeacae72 DIR=UL) len=88
<0008> tbf.cpp:1691 LLC [PCU -> SGSN] TBF(TFI=0 TLLI=0xdeacae72 DIR=UL) len=88
<0007> gprs_rlcmac_meas.cpp:104 UL RSSI of TLLI=0xdeacae72: -66 dBm
<0001> pcu_l1_if.cpp:282 RACH request received: sapi=1 qta=0, ra=120, fn=2237386
<0002> tbf.cpp:1503 TBF(TFI=0 TLLI=0x00000000 DIR=UL) changing tlli from TLLI=0x00000000 TLLI=0xdeacae72 ul_changed=0
...........

The DNS query seems to be reaching the SGSN and getting encapsulated in GTP from there on.
But the wireshark trace shows that there is no packet captured for the tap0 interface.

Any suggestions

On Tue, May 13, 2014 at 7:15 PM, Ivan Kluchnikov <Ivan.Kluchnikov@fairwaves.ru> wrote:

Hi Joe,

If you use UmDESK, osmo-trx, osmo-bts, osmo-nitb and osmo-sgsn should
be already installed.
So you should use following manual:

=== Build & Install ===
[osmo-pcu]
git clone git://git.osmocom.org/osmo-pcu
cd osmo-pcu/
git checkout sysmocom/master
autoreconf -i
./configure --enable-sysmocom-bts
make
cd ..

[openggsn]
git clone git://git.osmocom.org/openggsn.git
cd openggsn/
autoreconf -i
./configure
make
sudo make install
cd ..

=== Configuration ===

[openggsn configuration]
Copy ggsn.conf to /etc directory

[sgsn configuration]
Copy osmo_sgsn.cfg to openbsc/openbsc/src/gprs directory

[Network configuration]
# We use eth0 interface for connection to the internet, if you use
other interface, you should edit fourth line.
sudo tunctl
sudo ifconfig tap0 127.0.0.2 up
sudo echo 1 > /proc/sys/net/ipv4/ip_forward
sudo iptables -A POSTROUTING -s 10.0.254.0/24 -t nat -o eth0 -j MASQUERADE

[OpenBSC configuration]

Add this to the network/bts node in openbsc.cfg:

gprs mode gprs
gprs routing area 0
gprs cell bvci 2
gprs nsei 101
gprs nsvc 0 nsvci 101
gprs nsvc 0 local udp port 23030

gprs nsvc 0 remote udp port 23000

gprs nsvc 0 remote ip 127.0.0.1

Allocate some timeslots to packet data (recommend to use at least 4
timeslots for gprs).
For this, just change network/bts/trx/timeslot nodes using :

phys_chan_config PDCH

=== Start ===

1. ggsn
2. sgsn
3. pcu
4. osmo-nitb
5. osmo-bts
6. osmo-trx

2014-05-13 14:11 GMT+04:00 Joe Ge <jijo123789@gmail.com>:

>
> Hi All,
>
> I have installed OpenBSC +Osmo-BTS following Osmocom's netwrok from scratch
> link http://openbsc.osmocom.org/trac/wiki/network_from_scratch
> Now I would like to implemenet GPRS facility in the testbedusing OpenGGSN
> and Osmo-SGSN.
>
> I am using fairwaves UmDESK for this implementation.
>
> I followed the procedure as suggested in the
> http://openbsc.osmocom.org/trac/wiki/OpenBSC_GPRS
> with the added modification as suggested in
> https://wush.net/trac/rangepublic/wiki/fairwaves.gprs
>
> But this doesn't seem to work out.
>
> Currently the systems execute properly with the following outputs
>
> GGSN Output:
>
> root@nist:/home/nist# ggsn
> cmdline_parser_configfile
> listen: 127.0.0.1
> conf: /etc/ggsn.conf
> fg: 1
> debug: 1
> qos: 0x0b921f
> apn: internet
> net: 192.168.0.0/24
> dynip: 192.168.0.0/24
> pidfile: /var/run/ggsn.pid
> statedir: /var/lib/ggsn/
> timelimit: 0
> gtpclient: Initialising GTP tunnel
> openggsn[3822]: GTP: gtp_newgsn() started
> Creating tun interface
> Setting tun IP address
>
> Osmo-SGSN Output:
> root@nist:/home/nist# osmo-sgsn -c
> OpenBSC_GPRS/openbsc/openbsc/src/gprs/osmo_sgsn.cfg
> <0010> gprs_ns.c:199 NSVCI=65534 Creating NS-VC
>
> Osmo-PCU Output:
> root@nist:/home/nist# osmo-pcu
> No config file: 'osmo-pcu.cfg' Using default config.
>
> With these I also ran:
> Osmo-NITB
> Osmobts-TRX
> Osmo-TRX
>
> All of these run normally as well.
> My UE is able to detect the network as well but not able to connect with it.
>
> Given below are the config file entries
>
> ggsn.conf:
> listen 127.0.0.1
>
> osmo-sgsn.cfg:
> gtp local-ip 127.0.0.2
> ggsn 0 remote-ip 127.0.0.1
> .....
> encapsulation udp local-ip 127.0.0.2
>
> open-bsc.cfg:
> gprs nsvc 0 remote udp port 23000
> gprs nsvc 0 remote ip 127.0.0.2
>
> I had the following doubts regarding the given installation procedure
>
> 1. The fairwaves.gprs implementation using Chemeris's gprs-work seems to
> implement with Asterisk as PBX whereas I require it to run with the
> osmo-nitb.
>
> 2. The gprs-work branch still makes use of BTS transceiver and I wanted it
> to work with the Osmo-nitb implementation using osmobts-trx and osmo-trx
>
> Can somebody please help me out with this?
>
> Or is there any alternative implementation which can be tried to execute
> them together.
>
> Looking forward to hearing from you,
>
> With Regards,
> Jijo
>

--
Regards,
Ivan Kluchnikov.
http://fairwaves.ru