Cisco Cisco Packet Data Gateway (PDG) Documentation Roadmaps
HRPD Serving Gateway Overview
Call/Session Procedure Flows ▀
Cisco ASR 5000 Series Product Overview ▄
OL-22938-01
PDN Connection Release Initiated by HSGW
This section describes the procedure of a session release by the HSGW.
Figure 111.
PDN Connection Release by the HSGW Call Flow
eAN/ePCF
HSGW (MAG)
P-GW (LMA)
UE
PPP VSNCP-Term-Req
Attached
1
PPP VSNCP-Term-Ack
4
PBU
5
PBA
6
RA
PMIPv6 Tunnel
MAG Release Trigger
3
7
2
Table 61. PDN Connection Release by the HSGW Call Flow Description
Step
Description
1
The UE is attached to the EPC and has a PDN connection with the P-GW for PDN-ID=x and APN with assigned HNP.
2
The HSGW MAG service triggers a disconnect of the PDN connection for PDNID=x.
3
The HSGW sends a PPP VSNCP-Term-Req with PDNID=x to the UE.