Fwd: Running OpenGGSN with UmTRX(Osmobts-trx)

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Re: Configure problem with openggsn

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Joe Ge

13 May 2014 13 May '14

12:11 p.m.

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

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Ivan Kluchnikov

13 May 13 May

3:45 p.m.

New subject: Running OpenGGSN with UmTRX(Osmobts-trx)

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

Joe Ge

15 May 15 May

11:52 a.m.

New subject: Running OpenGGSN with UmTRX(Osmobts-trx)

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:

...

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

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

Ivan Kluchnikov

12:13 p.m.

New subject: Running OpenGGSN with UmTRX(Osmobts-trx)

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:

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

Joe Ge

12:15 p.m.

New subject: Running OpenGGSN with UmTRX(Osmobts-trx)

Yeah did that as well. I had that initial doubt that it might not be routing properly *root@nist:/home/nist# sudo iptables -L -t nat* Chain PREROUTING (policy ACCEPT) target prot opt source destination Chain INPUT (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination Chain POSTROUTING (policy ACCEPT) target prot opt source destination MASQUERADE all -- 10.0.254.0/24 anywhere On Thu, May 15, 2014 at 3:43 PM, Ivan Kluchnikov < Ivan.Kluchnikov(a)fairwaves.ru> wrote:

...

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: > > 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

> > 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

Ivan Kluchnikov

12:29 p.m.

New subject: Running OpenGGSN with UmTRX(Osmobts-trx)

2014-05-15 13:52 GMT+04:00 Joe Ge <jijo123789(a)gmail.com>om>:

...

But the wireshark trace shows that there is no packet captured for the tap0 interface.

Try to capture on tun interface. -- Regards, Ivan Kluchnikov. http://fairwaves.ru

Joe Ge

1:25 p.m.

New subject: Running OpenGGSN with UmTRX(Osmobts-trx)

I captured on the tun0 interface as well. It's showing the DNS queries sent from the UE IP(10.0.254.2) to the DNS server(8.8.8.8) But it's getting blocked at the GGSN or the op forwarding as I can't seen any reply coming back. It's all one way traffic On Thu, May 15, 2014 at 3:59 PM, Ivan Kluchnikov < Ivan.Kluchnikov(a)fairwaves.ru> wrote:

...

2014-05-15 13:52 GMT+04:00 Joe Ge <jijo123789(a)gmail.com>om>:

But the wireshark trace shows that there is no packet captured for the

tap0

interface.

Try to capture on tun interface. -- Regards, Ivan Kluchnikov. http://fairwaves.ru

Ivan Kluchnikov

2:08 p.m.

New subject: Running OpenGGSN with UmTRX(Osmobts-trx)

are you sure that 8.8.8.8 is available? ping -I eth0 8.8.8.8 2014-05-15 15:25 GMT+04:00 Joe Ge <jijo123789(a)gmail.com>om>:

...

2014-05-15 13:52 GMT+04:00 Joe Ge <jijo123789(a)gmail.com>om>:

But the wireshark trace shows that there is no packet captured for the tap0 interface.

Try to capture on tun interface. -- Regards, Ivan Kluchnikov. http://fairwaves.ru

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

Joe Ge

16 May 16 May

6:56 a.m.

New subject: Running OpenGGSN with UmTRX(Osmobts-trx)

Hey Ivan, yeah the ping is working properly. FYI I'm using a data card for the internet. I hope that isn't the issue. I filtered the packet capture in 127.0.0.1 (lo) using GTP and it was able to capture GTP encapsulated DNS queries. But like earlier there is no traffic in tap0. Any suggestions?? On Thu, May 15, 2014 at 5:38 PM, Ivan Kluchnikov < Ivan.Kluchnikov(a)fairwaves.ru> wrote:

...

are you sure that 8.8.8.8 is available? ping -I eth0 8.8.8.8 2014-05-15 15:25 GMT+04:00 Joe Ge <jijo123789(a)gmail.com>om>:

2014-05-15 13:52 GMT+04:00 Joe Ge <jijo123789(a)gmail.com>om>:

But the wireshark trace shows that there is no packet captured for the tap0 interface.

Try to capture on tun interface. -- Regards, Ivan Kluchnikov. http://fairwaves.ru

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

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