â–„ Cisco ASR 5000 Series Product Overview
CSN HA processes the MIPv4 Registration Request.If a HoA is 0.0.0.0 in the Mobile IP Registration Request message, the
HA assigns a HoA. Otherwise, the HoA in the Mobile IP Registration Request message is used.
The HA responds with the Mobile IP Registration Response message.The source address for this Mobile IPv4 message
over R3 is HA, and the destination address is FA-CoA.The FA forwards the message to the PMIP4 client. The PMIP4
client passes this information to the DHCP proxy.
The DHCP proxy sends the DHCP OFFER message to the MS.
MS sends a DHCP REQUEST to the DHCP Proxy with the information received in the DHCP OFFER.
The DHCP Proxy acknowledges the use of this IP address and other configuration parameters by sending the DHCP ACK
message.
WiMAX session established between MS and CSN HA.
PMIP4 Session Release
This section describes the CSN procedure of PMIPv4 session release during a WiMAX subscriber session.
The following figure and table provide a high-level view of the steps involved in PMIPv4 session release and
termination of connection an SS/MS.