How the PDN Gateway Works ▀  
Cisco ASR 5000 Series Product Overview ▄  
PDN Connection Release Initiated by HSGW 
This section describes the procedure of a session release by the HSGW. 
 
Figure 139.  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 75.  PDN Connection Release by the HSGW Call Flow Description 
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. 
The HSGW MAG service triggers a disconnect of the PDN connection for PDNID=x.