Cisco Cisco Packet Data Gateway (PDG) Documentation Roadmaps
PDN Gateway Overview
How the PDN Gateway Works ▀
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OL-22937-01
Figure 159. 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
6
BRI
2
BRA
3
RA
PMIPv6 Tunnel
MAG Disconnect UE
5
7
4
Table 89.
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
A PGW trigger causes a disconnect of the PDN connection for PDNID=x and the PGW sends a Binding Revocation
Indication (BRI) message to the HSGW with the following attributes: MNID, APN, HNP.
Indication (BRI) message to the HSGW with the following attributes: MNID, APN, HNP.
3
The HSGW responds to the BRI message with a Binding Revocation Acknowledgement (BRA) message with the sane
attributes (MNID, APN, HNP).
attributes (MNID, APN, HNP).
4
The HSGW MAG service triggers a disconnect of the UE PDN connection for PDNID=x.
5
The HSGW sends a PPP VSNCP-Term-Req with PDNID=x to the UE.