GPRS attach - OpenBSC

28 Nov 2014

Hello

Getting error on implementation of gprs
cannot handle GMM for unknown MM CTX
MS identity cannot be derived by the network

can somebody suggest why and what can I do to fix it.

log file for sgsn.

<0010> gprs_ns.c:199 NSVCI=65534 Creating NS-VC
<0010> gprs_ns.c:199 NSVCI=65535 Creating NS-VC
<0010> gprs_ns.c:1200 Creating NS-VC for BSS at 192.168.2.12:23000
<0010> gprs_ns.c:774 NSVCI=65535(invalid) Rx NS RESET (NSEI=101, NSVCI=101,
cause=O&M intervention)
<0010> gprs_ns.c:594 NSEI=101 Tx NS RESET ACK (NSVCI=101)
<0010> gprs_ns.c:512 NSEI=101 Starting timer in mode tns-test (30 seconds)
<0010> gprs_ns.c:512 NSEI=101 Starting timer in mode tns-test (30 seconds)
<0010> gprs_ns.c:1281 NSEI=101 Rx NS UNBLOCK
<0011> gprs_bssgp.c:249 BSSGP BVCI=0 Rx RESET cause=Transmission capacity
modified
<0011> gprs_bssgp.c:344 BSSGP BVCI=2 Rx BVC-UNBLOCK
<0011> gprs_bssgp_util.c:103 BSSGP BVCI=2 Tx STATUS, cause=Unknown BVCI
<0011> gprs_bssgp.c:249 BSSGP BVCI=2 Rx RESET cause=O&M intervention
<0011> gprs_bssgp.c:272 Cell 302-720-7-0 CI 8 on BVCI 2
<0011> gprs_bssgp.c:344 BSSGP BVCI=2 Rx BVC-UNBLOCK
<0011> gprs_bssgp.c:753 BSSGP BVCI=2 Rx Flow Control BVC
<0011> gprs_bssgp.c:790 BSS instructs us to MS default bucket leak rate !=
0, restarting DL GPRS!
<0011> gprs_bssgp.c:376 BSSGP TLLI=0xb4c2fd41 Rx UPLINK-UNITDATA
<0012> gprs_llc.c:568 LLC SAPI=1 C   FCS=0x7439ebCMD=UI DATA
<0012> gprs_llc.c:95 TLLI 0xb4c2fd41 is foreign, converting to local TLLI
0xf4c2fd41
<0012> gprs_llc.c:95 TLLI 0xb4c2fd41 is foreign, converting to local TLLI
0xf4c2fd41
<0012> gprs_llc.c:254 LLC RX: unknown TLLI 0xb4c2fd41, creating LLME on the
fly
<0002> gprs_gmm.c:924 -> GMM RA UPDATE REQUEST type="RA updating"  LLC
XID
RESET  REJECT
<0002> gprs_gmm.c:861 <- ROUTING AREA UPDATE REJECT
<0012> gprs_llc.c:95 TLLI 0xb4c2fd41 is foreign, converting to local TLLI
0xf4c2fd41
<0011> gprs_bssgp.c:753 BSSGP BVCI=2 Rx Flow Control BVC
<0011> gprs_bssgp.c:376 BSSGP TLLI=0xb4c2fd41 Rx UPLINK-UNITDATA
<0012> gprs_llc.c:568 LLC SAPI=1 C   FCS=0x9ab10aCMD=UI DATA
<0012> gprs_llc.c:95 TLLI 0xb4c2fd41 is foreign, converting to local TLLI
0xf4c2fd41
<0012> gprs_llc.c:241 LLC RX: Found a local entry for TLLI 0xb4c2fd41
<0012> gprs_llc.c:615 TLLI=f4c2fd41 dropping UI, N(U=0) not in window
V(URV(UR:3).
<0010> gprs_ns.c:530 NSEI=101 Timer expired in mode tns-test (30 seconds)
<0010> gprs_ns.c:473 NSEI=101 Tx NS ALIVE (NSVCI=101)
<0010> gprs_ns.c:512 NSEI=101 Starting timer in mode tns-alive (10 seconds)
<0010> gprs_ns.c:486 NSEI=101 Tx NS ALIVE_ACK (NSVCI=101)
<0010> gprs_ns.c:512 NSEI=101 Starting timer in mode tns-test (30 seconds)
<0011> gprs_bssgp.c:753 BSSGP BVCI=2 Rx Flow Control BVC
<0011> gprs_bssgp.c:753 BSSGP BVCI=2 Rx Flow Control BVC
<0011> gprs_bssgp.c:376 BSSGP TLLI=0x9ec3b021 Rx UPLINK-UNITDATA
<0012> gprs_llc.c:568 LLC SAPI=1 C   FCS=0x79a5b6CMD=UI DATA
<0012> gprs_llc.c:95 TLLI 0x9ec3b021 is foreign, converting to local TLLI
0xdec3b021
<0012> gprs_llc.c:95 TLLI 0x9ec3b021 is foreign, converting to local TLLI
0xdec3b021
<0012> gprs_llc.c:254 LLC RX: unknown TLLI 0x9ec3b021, creating LLME on the
fly
<0002> gprs_gmm.c:924 -> GMM RA UPDATE REQUEST type="RA updating"  LLC
XID
RESET  REJECT
<0002> gprs_gmm.c:861 <- ROUTING AREA UPDATE REJECT
<0012> gprs_llc.c:95 TLLI 0x9ec3b021 is foreign, converting to local TLLI
0xdec3b021
<0011> gprs_bssgp.c:753 BSSGP BVCI=2 Rx Flow Control BVC
<0011> gprs_bssgp.c:376 BSSGP TLLI=0x7b549435 Rx UPLINK-UNITDATA
<0012> gprs_llc.c:568 LLC SAPI=1 C   FCS=0xd1bcf4CMD=UI DATA
<0012> gprs_llc.c:254 LLC RX: unknown TLLI 0x7b549435, creating LLME on the
fly
<0002> gprs_gmm.c:640 -> GMM ATTACH REQUEST MI(302720xxxxxxxxx) type="GPRS
attach"
<0002> gprs_gmm.c:444 <- GPRS IDENTITY REQUEST: mi_type=02
<0011> gprs_bssgp.c:376 BSSGP TLLI=0x7b549435 Rx UPLINK-UNITDATA
<0012> gprs_llc.c:568 LLC SAPI=1 C   FCS=0x4567cfCMD=UI DATA
<0002> gprs_gmm.c:1033 Cannot handle GMM for unknown MM CTX
<0002> gprs_gmm.c:277 <- GPRS MM STATUS (cause: MS identity cannot be
derived by the network)
<0011> gprs_bssgp.c:753 BSSGP BVCI=2 Rx Flow Control BVC
<0011> gprs_bssgp.c:376 BSSGP TLLI=0x9ec20d01 Rx UPLINK-UNITDATA
<0012> gprs_llc.c:568 LLC SAPI=1 C   FCS=0x365438CMD=UI DATA
<0012> gprs_llc.c:95 TLLI 0x9ec20d01 is foreign, converting to local TLLI
0xdec20d01
<0012> gprs_llc.c:95 TLLI 0x9ec20d01 is foreign, converting to local TLLI
0xdec20d01
<0012> gprs_llc.c:254 LLC RX: unknown TLLI 0x9ec20d01, creating LLME on the
fly
<0002> gprs_gmm.c:924 -> GMM RA UPDATE REQUEST type="RA updating"  LLC
XID
RESET  REJECT
<0002> gprs_gmm.c:861 <- ROUTING AREA UPDATE REJECT

ramesh