Cisco ASR 5000 series Product Overview page 207

ASN Gateway Overview
Figure 61.
MS/SS
Table 45. PMIP4 Connection Setup Call Flow Description
Step Description
1 Initial network entry completed as described in ASN Procedures.
2 MS sends DHCP DISCOVER message to DHCP Proxy (co-located with ASN Gateway) to discover a DHCP server for IP
host configuration.
3 Upon receiving the DHCP DISCOVER message, the DHCP Proxy in the NAS triggers the PMIP4 client to initiate 8 the
Mobile IPv4 Registration procedure.The PMIP4 client uses the HoA information and constructs a Mobile IPv4 Registration
Request message and sends the Mobile IPv4 Registration Request to the FA address. The FA forwards the registration
request to the CSN HA.
OL-22938-02
PMIP4 Connection Setup Call Flow
ASN GW/PMIP/ FA/
1
2
6
7
8
DHCP Proxy
9
CSN HA
3
4
5
Cisco ASR 5000 Series Product Overview ▄
CSN Procedure Flows ▀