Cisco ASR 5000 series Product Overview page 180

▀ ASN Call Procedure Flows
Figure 47.
MS/SS
2
4
Table 32. Network Triggered Network Exit Call Flow Description
Step Description
1 Network entities, such as AAA Server, ASN Gateway FA/HA, trigger Session Release Trigger to ASN BS. This can be
from H-AAA ServerAnchor ASN Gateway/FA/HAServing ASN BS, etc.
2 ASN BS sends DREG_CMD message to MS, including Action Code=0x00 to indicate MS existing network.
3 IP session for DHCP/MIP release starts between MS and network entities.
4 MS sends DREG_REQ to ASN BS with De-Registration_Request_Code=0x02.
5 ASN BS sends Path_Dereg_Req message to ASN Gateway.
6 ASN Gateway/FA and HA starts MIP release procedure.
▄ Cisco ASR 5000 Series Product Overview
Network Triggered Network Exit Call Flow
ASN-GW/FA/
ASN BS
Authenticator
3
5
10
11
CSN HA
DATA
1
6
7
CSN/PDN/
Internet
8
9
ASN Gateway Overview
H-AAA
Server
OL-22938-02