Project

General

Profile

Bug #2961

OsmoSGSN / libgtp don't support GGSN-initiated PDP Context Deactivation

Added by laforge 3 months ago. Updated 3 months ago.

Status:
New
Priority:
Normal
Assignee:
sysmocom
Category:
GTP interface
Target version:
-
Start date:
02/18/2018
Due date:
% Done:

0%

Spec Reference:

Description

The GGSN can at any time deactivate a PDP context. See 3GPP TS 29.060:

7.3.5 Delete PDP Context Request
A Delete PDP Context Request shall be sent from a SGSN node to a GGSN node as part of the GPRS Detach procedure or the GPRS PDP Context Deactivation procedure or from a GGSN node to a SGSN node as part of the PDP Context Deactivation Initiated by GGSN procedure.

However, if we do this with OsmoSGSN, OsmoSGSN will log:

Sun Feb 18 22:23:15 2018 DLGTP <0025> gtp.c:3026 Packet from 127.0.0.2:2123, length: 14 content: 32 14 00 06 00 00 00 01 00 17 00 00 14 05 : Unexpected GTPv1 Signalling Message

I have created SGSN_Tests.TC_attach_pdp_act_user_deact_mt to provoke this situation.

History

#1 Updated by laforge 3 months ago

  • Assignee set to sysmocom

Also available in: Atom PDF