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auto_art
2016-12-14, 03:42 AM
hi

we have a fixed LTE network. we many times runs into a problem where an ideal connected UE suddenly start communicating the MME with a local IP. which does not exist in its record hence its drops the call.


as below. 104.245.164.43 was an IP assigned to this UE by Core suddenly it starts using 192.168.15.115 which is local to that CPE. pl share if anyone has any input on this. we have cisco asr5000 as our Core. and huawei as Ran.





Saturday November 19 2016
***CONTROL*** 00:37:05:910 Eventid:10101
IP Source Address Violation - Dropping Call too many violations - Subscriber <302999000912776@pnet.ddi.ca> msid <302999000912776> Bad ipv4 address 192.168.15.115 - Expected ipv4 address 104.245.164.43 - Total source violations 10


Saturday November 19 2016
<<<<OUTBOUND 00:37:05:942 Eventid:141005(3)
[PGW-S5/S2a/S2b]GTPv2C Tx PDU, from 10.13.2.8:30020 to 10.13.2.7:2123 (17)
TEID: 0x90F06001, Message type: EGTP_DELETE_BEARER_REQUEST (0x63)
Sequence Number: 0x242401 (2368513)
GTP HEADER
Version number: 2
TEID flag: Present
Piggybacking flag: Not present
Message Length: 0x000D (13)


INFORMATION ELEMENTS
EPS BEARER ID:
Value: 5