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Ron ron.menez at entropysolution.comHi Community,
We were able to remove the error logs flooding in OSMO-PCU by upgrading to the latest version of OSMO Elements and doing the IPV4 forwarding and masquerading ad-hoc as per OpenGGSN documentation (“http://ftp.osmocom.org/docs/latest/osmoggsn-usermanual.pdf”).
Now, UE still not able to obtain an IP address. We made the “auth-policy accept-all” in OSMO-SGSN to accept all request.
Below are the ifconfig and config files used for the testing.
IFCONFIG:
# ifconfig
apn0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
inet addr:192.168.42.0 P-t-P:192.168.42.0 Mask:255.255.255.0
UP POINTOPOINT RUNNING MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
enp0s25 Link encap:Ethernet HWaddr b8:ae:ed:7c:eb:f0
inet addr:192.168.1.175 Bcast:0.0.0.0 Mask:255.255.255.255
inet6 addr: fe80::baae:edff:fe7c:ebf0/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:622663 errors:0 dropped:0 overruns:0 frame:0
TX packets:605604 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:902447377 (902.4 MB) TX bytes:897214804 (897.2 MB)
Interrupt:20 Memory:aa100000-aa120000
enp0s25.60 Link encap:Ethernet HWaddr b8:ae:ed:7c:eb:f0
inet addr:192.168.10.3 Bcast:192.168.10.255 Mask:255.255.255.0
inet6 addr: fe80::baae:edff:fe7c:ebf0/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:603890 errors:0 dropped:0 overruns:0 frame:0
TX packets:600040 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:880955628 (880.9 MB) TX bytes:891260801 (891.2 MB)
enp0s25.80 Link encap:Ethernet HWaddr b8:ae:ed:7c:eb:f0
inet addr:192.168.1.170 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::baae:edff:fe7c:ebf0/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:18701 errors:0 dropped:0 overruns:0 frame:0
TX packets:5462 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:7789419 (7.7 MB) TX bytes:1101655 (1.1 MB)
OSMO-HLR:
# more osmo-hlr.cfg
log stderr
logging print extended-timestamp 1
logging level all debug
logging filter all 1
logging print category 1
OSMO-MGW:
# more osmo-mgw-for-bsc.cfg
mgcp
bind ip 192.168.1.170
# default port is 2427 (is used for MSC's MGW)
bind port 12427
line vty
# default VTY interface is on 127.0.0.1 (used for MSC's MGW)
bind 127.0.0.2
log stderr
logging print extended-timestamp 1
logging level all debug
logging filter all 1
logging print category 1
OSMO-STP:
# more osmo-stp.cfg
cs7 instance 0
xua rkm routing-key-allocation dynamic-permitted
listen m3ua 2905
accept-asp-connections dynamic-permitted
log stderr
logging print extended-timestamp 1
logging level all debug
logging filter all 1
logging print category 1
OSMO-GGSN:
# more osmo-ggsn.cfg
log stderr
logging level all debug
logging filter all 1
logging print category 1
ggsn ggsn0
gtp bind-ip 192.168.1.175
apn internet
tun-device apn0
type-support v4
ip dns 0 192.168.1.1
ip dns 1 8.8.8.8
ip ifconfig 192.168.42.0/24
ip prefix dynamic 192.168.42.0/24
no shutdown
default-apn internet
no shutdown ggsn
log stderr
logging print extended-timestamp 1
logging level all debug
logging filter all 1
logging print category 1
OSMO-HNBGW:
# more osmo-hnbgw.cfg
hnbgw
iuh
local-ip 192.168.1.170
log stderr
logging print extended-timestamp 1
logging level all debug
logging filter all 1
logging print category 1
OSMO-SGSN:
# more osmo-sgsn.cfg
sgsn
gtp local-ip 192.168.1.170
ggsn 0 remote-ip 192.168.1.175
ggsn 0 gtp-version 1
auth-policy accept-all
gsup remote-ip 127.0.0.1
ns
encapsulation udp local-ip 192.168.1.170
encapsulation udp local-port 23001
encapsulation framerelay-gre enabled 0
log stderr
logging print extended-timestamp 1
logging level all debug
logging filter all 1
logging print category 1
OSMO-MSC:
# more osmo-msc.cfg
network
network country code 515
mobile network code 94
short name testNETWORK
long name testNETWORK
encryption a5 0
! encryption a5 1
msc
mgw remote-ip 192.168.1.170
log stderr
logging print extended-timestamp 1
logging level all debug
logging filter all 1
logging print category 1
logging level ref debug
OSMO-BSC:
# more osmo-bsc.cfg
network
network country code 515
mobile network code 94
encryption a5 0
! encryption a5 1
bts 0
type sysmobts
band GSM900
location_area_code 23
ip.access unit_id 0 0
gprs mode gprs
gprs nsvc 0 remote ip 192.168.1.170
gprs nsvc 0 remote udp port 23001
gprs nsvc 0 local udp port 23000
gprs nsvc 0 nsvci 1800
gprs nsei 1800
gprs cell bvci 1800
trx 0
rf_locked 0
arfcn 115
nominal power 23
timeslot 0
phys_chan_config CCCH+SDCCH4
timeslot 1
phys_chan_config SDCCH8
timeslot 2
phys_chan_config TCH/F_TCH/H_PDCH
timeslot 3
phys_chan_config TCH/F_TCH/H_PDCH
timeslot 4
phys_chan_config TCH/F_TCH/H_PDCH
timeslot 5
phys_chan_config TCH/F_TCH/H_PDCH
timeslot 6
phys_chan_config TCH/F_TCH/H_PDCH
timeslot 7
phys_chan_config PDCH
e1_input
e1_line 0 driver ipa
msc 0
mgw remote-ip 192.168.1.170
mgw remote-port 12427
allow-emergency deny
codec-list hr3
log stderr
logging print extended-timestamp 1
logging level all debug
logging filter all 1
logging print category 1
OSMO-TRX:
# more osmo-trx-umtrx.cfg
log stderr
logging filter all 1
logging color 1
logging print category 1
logging timestamp 1
logging print file basename
logging level all info
!
line vty
no login
!
trx
bind-ip 127.0.0.1
remote-ip 127.0.0.1
base-port 5700
dev-args addr=192.168.10.2,pa=NONE,pa_power_max_dbm=23,fifo_ctrl_window=0,status_port=12345
! egprs enable
tx-sps 4
rx-sps 4
rssi-offset 38
rt-prio 18
chan 0
OSMO-PCU:
# more osmo-pcu.cfg
!pcu
! flow-control-interval 10
! cs 2
! alloc-algorithm dynamic
! alpha 0
! gamma 0
pcu
flow-control-interval 10
cs 2
alloc-algorithm dynamic
alpha 0
gamma 0
two-phase-access
Best Regard,
Ron Menez
ron.menez at entropysolution.com<mailto:ron.menez at entropysolution.com>
On Aug 10, 2018, at 11:48 PM, Ron <ron.menez at entropysolution.com<mailto:ron.menez at entropysolution.com>> wrote:
Hi Community,
We tried to used the GPRS capability of OSMOCOM.
Installation and configuration were based in the URL provided below:
https://osmocom.org/projects/cellular-infrastructure/wiki/Osmocom_Network_In_The_Box#OsmoBTS
We successfully installed the needed elements to run GPRS and we were able to run the following:
osmo-msc
osmo-stp
osmo-hnbgw (optional)
osmo-ggsn
osmo-sgsn
osmo-mgw
osmo-bsc
osmo-trx-uhd
osmo-hlr
osmo-pcu
UE were able to camp but IP Address is unavailable (checked it under Settings > About Phone > Status)
No session / request coming in the OSMO-SGSN.
We are also flooded with this log in OSMO-PCU:
<000c> gprs_bssgp_pcu.cpp:848 Sending unblock on BVCI 1800
<000c> gprs_bssgp_bss.c:274 BSSGP (BVCI=1800) Tx BVC-BLOCK
<000c> gprs_bssgp.c:288 Cell 001-01-23-0 CI 0 on BVCI 1800
<000c> gprs_bssgp_bss.c:294 BSSGP (BVCI=1800) Tx BVC-RESET CAUSE=O&M intervention
<000c> gprs_bssgp.c:550 BSSGP BVCI=0 Rx BVC STATUS, cause=Protocol error - unspecified
<000c> gprs_bssgp_pcu.cpp:354 Rx BSSGP BVCI=0 (SIGN) PDU type BVC-UNBLOCK unknown
<000c> gprs_bssgp_util.c:238 BSSGP BVCI=0 Tx STATUS, cause=Protocol error - unspecified
<000c> gprs_bssgp_pcu.cpp:304 Rx BSSGP BVCI=0 (SIGN) BVC_RESET_ACK
<000c> gprs_bssgp_pcu.cpp:848 Sending unblock on BVCI 1800
<000c> gprs_bssgp_bss.c:274 BSSGP (BVCI=1800) Tx BVC-BLOCK
<000c> gprs_bssgp.c:288 Cell 001-01-23-0 CI 0 on BVCI 1800
<000c> gprs_bssgp_bss.c:294 BSSGP (BVCI=1800) Tx BVC-RESET CAUSE=O&M intervention
<000c> gprs_bssgp.c:550 BSSGP BVCI=0 Rx BVC STATUS, cause=Protocol error - unspecified
<000c> gprs_bssgp_pcu.cpp:354 Rx BSSGP BVCI=0 (SIGN) PDU type BVC-UNBLOCK unknown
<000c> gprs_bssgp_util.c:238 BSSGP BVCI=0 Tx STATUS, cause=Protocol error - unspecified
<000c> gprs_bssgp_pcu.cpp:304 Rx BSSGP BVCI=0 (SIGN) BVC_RESET_ACK
<000c> gprs_bssgp_pcu.cpp:848 Sending unblock on BVCI 1800
<000c> gprs_bssgp_bss.c:274 BSSGP (BVCI=1800) Tx BVC-BLOCK
<000c> gprs_bssgp.c:288 Cell 001-01-23-0 CI 0 on BVCI 1800
<000c> gprs_bssgp_bss.c:294 BSSGP (BVCI=1800) Tx BVC-RESET CAUSE=O&M intervention
<000c> gprs_bssgp.c:550 BSSGP BVCI=0 Rx BVC STATUS, cause=Protocol error - unspecified
<000c> gprs_bssgp_pcu.cpp:354 Rx BSSGP BVCI=0 (SIGN) PDU type BVC-UNBLOCK unknown
<000c> gprs_bssgp_util.c:238 BSSGP BVCI=0 Tx STATUS, cause=Protocol error - unspecified
<000c> gprs_bssgp_pcu.cpp:304 Rx BSSGP BVCI=0 (SIGN) BVC_RESET_ACK
Any suggestion / comments what seems to be the problem with our setup?
TIA.
Best Regard,
Ron Menez
ron.menez at entropysolution.com<mailto:ron.menez at entropysolution.com>
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