Cisco Cisco Packet Data Interworking Function (PDIF)
SaMOG Gateway Overview
How the SaMOG Gateway Works ▀
SaMOG Administration Guide, StarOS Release 19 ▄
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P-GW Initiated Session Disconnection
The figure below shows the message flow during a P-GW initiated session disconnection. The table that follows the
figure describes each step in the message flow.
figure describes each step in the message flow.
Figure 9. P-GW Initiated Session Disconnection
Table 10. P-GW Initiated Session Disconnection
Step
Description
1.
The P-GW initiates a “GTPv2 Delete Bearer Request” to remove the session resources from CGW.
2.
The CGW responds back with a “GTPv2 Delete Bearer Response” to P-GW.
3.
The CGW sends a “PMIPv6 Binding Revocation Indication” message to WLC to detach PMIPv6 GRE Tunnel between
WLC and CGW.
WLC and CGW.
4.
The MRME initiates a “Diameter Session-Termination-Request” message towards 3GPP AAA Server without waiting for
GTPv2 Response procedures.
GTPv2 Response procedures.
5.
The MRME also initiates a “Radius Disconnect Request” Message towards WLC to release the resources on WLC and
towards UE.
towards UE.