Hello.
I have similar setup although in my case it doesn't work at all.
Could you share your configs so I can check that I hadn't missed something obvious. Here are mine. Note that I run everything on a single machine 192.168.10.53 nanoBTS is configured and successfully connected to openbsc (green light on bts).
/etc/ggsn.conf:
listen 127.0.0.1 dynip 10.0.0.0/24 pcodns1 8.8.8.8 pcodns2 208.67.220.220
/etc/osmo_sgsn.cfg: ! line vty
no login
!
sgsn
gtp local-ip 192.168.10.53 ggsn 0 remote-ip 127.0.0.1 ggsn 0 gtp-version 1
!
ns
timer tns-block 3 timer tns-block-retries 3 timer tns-reset 3 timer tns-reset-retries 3 timer tns-test 30 timer tns-alive 3 timer tns-alive-retries 10 encapsulation udp local-ip 192.168.10.53 encapsulation udp local-port 23000 encapsulation framerelay-gre enabled 0 !
bssgp !
/etc/openbsc.cfg: ! !
password foo
!
line vty
no login !
e1_input
e1_line 0 driver ipa network
network country code 1 mobile network code 1 short name OpenBSC
long name OpenBSC
auth policy accept-all
location updating reject cause 13 encryption a5 0 neci 1 rrlp mode none
mm info 1 handover 0 handover window rxlev averaging 10 handover window rxqual averaging 1 handover window rxlev neighbor averaging 10 handover power budget interval 6 handover power budget hysteresis 3 handover maximum distance 9999 timer t3101 10 timer t3103 0 timer t3105 0 timer t3107 0 timer t3109 0 timer t3111 0 timer t3113 60 timer t3115 0 timer t3117 0 timer t3119 0 timer t3141 0 bts 0 type nanobts band DCS1800 cell_identity 0 location_area_code 1 training_sequence_code 7 base_station_id_code 63 ms max power 15 cell reselection hysteresis 4 rxlev access min 0 channel allocator ascending rach tx integer 9 rach max transmission 7 ip.access unit_id 1801 0 oml ip.access stream_id 255 line 0 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 23000 gprs nsvc 0 remote udp port 23000 gprs nsvc 0 remote ip 192.168.10.53 trx 0 rf_locked 0 arfcn 514 nominal power 23 max_power_red 20 rsl e1 tei 0 timeslot 0 phys_chan_config CCCH+SDCCH4 timeslot 1 phys_chan_config SDCCH8 timeslot 2 phys_chan_config TCH/F timeslot 3 phys_chan_config TCH/F timeslot 4 phys_chan_config TCH/F timeslot 5 phys_chan_config PDCH timeslot 6 phys_chan_config PDCH timeslot 7 phys_chan_config TCH/F