Cisco ASR 5000 Series User Manual

PDN Gateway Overview
▀ How the PDN Gateway Works
▄ Cisco ASR 5000 Series Product Overview
OL-22938-02
Step
Description
3
The HSGW sends a PPP VSNCP-Term-Req with PDNID=x to the UE.
4
The UE acknowledges the receipt of the request with a VSNCP-Term-Ack (PDNID=x).
5
The HSGW begins the tear down of the PMIP session by sending a PBU Deregistration to the P-GW with the following
attributes: Lifetime=0, MNID, APN, HNP. The PBU Deregistration message should contain all the mobility options that
were present in the initial PBU that created the binding.
6
The P-GW looks up the BCE based on the HNP, deletes the binding, and responds to the HSGW with a Deregistration PBA
with the same attributes (Lifetime=0, MNID, APN, ATT=HRPD, HNP).
7
The HSGW optionally sends a Router Advertisement (RA) with assigned HNP and prefix lifetime=0.
PDN Connection Release Initiated by P-GW
This section describes the procedure of a session release by the P-GW.

Cisco ASR 5000 Series Specifications

General

Brand	Cisco
Model	ASR 5000 Series
Category	Network Router
Language	English