15 May
2014
15 May
'14
12:13 p.m.
Hi,
Check that you have configured the network correctly.
Try to use this:
sudo su
tunctl
ifconfig tap0 127.0.0.2 up
echo 1 > /proc/sys/net/ipv4/ip_forward
iptables -A POSTROUTING -s 10.0.254.0/24 -t nat -o eth0 -j MASQUERADE
2014-05-15 13:52 GMT+04:00 Joe Ge <jijo123789(a)gmail.com>om>:
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(a)fairwaves.ru> wrote:
--
Regards,
Ivan Kluchnikov.
http://fairwaves.ru
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(a)gmail.com>om>:
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