routing area reject and pdp deactivation

[Josh toal]

Hi All

in my sgsn log I am getting


<0002> gprs_gmm.c:921 -> GMM RA UPDATE REQUEST type="RA updating"  LLC XID
RESET  REJECT
<0002> gprs_gmm.c:860 <- ROUTING AREA UPDATE REJECT

then
<0002> gprs_gmm.c:640 -> GMM ATTACH REQUEST MI(xxxxxxx) type="GPRS attach"
<0002> gprs_gmm.c:444 <- GPRS IDENTITY REQUEST: mi_type=02
<0011> gprs_bssgp.c:753 BSSGP BVCI=2 Rx Flow Control BVC
<0011> gprs_bssgp.c:376 BSSGP TLLI=0xxxxxx Rx UPLINK-UNITDATA
<0012> gprs_llc.c:554 LLC SAPI=1 C   FCS=0xxxxx=UI DATA
<0002> gprs_gmm.c:582 -> GMM IDENTITY RESPONSE: mi_type=0x02 MI(xxxxxxxxx)
<0002> gprs_gmm.c:352 <- GPRS ATTACH ACCEPT (new P-TMSI=0xxxxxxx)
<0011> gprs_bssgp.c:376 BSSGP TLLI=0xxxxxx Rx UPLINK-UNITDATA
<0012> gprs_llc.c:554 LLC SAPI=1 C   FCS=0xxxxxxxx=UI DATA
<0002> gprs_gmm.c:1052 -> ATTACH COMPLETE

and then
<0002> gprs_gmm.c:1319 -> ACTIVATE PDP CONTEXT REQ: SAPI=3 NSAPI=5 IETF
IPv4
<000f> sgsn_libgtp.c:126 Create PDP Context
<000f> sgsn_libgtp.c:379 libgtp cb_conf(type=16, cause=128, pdp=0xxxxxxx,
cbp=0x1xxxxx)
<000f> sgsn_libgtp.c:265 Received CREATE PDP CTX CONF, cause=128(Request
accepted)
<0002> gprs_gmm.c:1197 <- ACTIVATE PDP CONTEXT ACK

finally
<0002> gprs_gmm.c:1432 -> DEACTIVATE PDP CONTEXT REQ (cause: Regular
deactivation)
<000f> sgsn_libgtp.c:212 Delete PDP Context
<000f> sgsn_libgtp.c:402 PDP Context was deleted
<000f> sgsn_libgtp.c:379 libgtp cb_conf(type=20, cause=128, pdp=(nil),
cbp=0xxxxxx)
<000f> sgsn_libgtp.c:321 Received DELETE PDP CTX CONF, cause=128(Request
accepted)
<0002> gprs_gmm.c:1290 <- DEACTIVATE PDP CONTEXT ACK


Am I getting PDP deactivation because of routing area reject.
Also noticed that  TLLI changes from Activate PDP context. This TLLI is
based on TMSI/P-TMSI
Upto Attach complete procedure I have different TLLI.


For setup I have

BSC, SGSN on eth0 and eth0:1 respectively and
GGSN on eth1 ( I have external network adapter).

Can anybody suggest something why I am not getting pdp deactivation.

regards
Josh
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