Table of Contents
Advertisement
▀ How Proxy Mobile IP Works in WiMAX Network
Step
Description
3
The ASN GW/FA and MN negotiate Link Control Protocol (LCP).
4
Upon successful LCP negotiation, the MN sends a PPP Authentication Request message to the ASN GW/FA.
5
The ASN GW/FA sends an Access Request message to the RADIUS AAA server.
6
The RADIUS AAA server successfully authenticates the subscriber and returns an Access Accept message to the ASN
GW/FA. The Accept message may contain various attributes to be assigned to the MN including the MN's Home Address
(IP address) and the IP address of the HA to use.
7
The ASN GW/FA sends a EAP Authentication Response message to the MN.
8
The MN sends an Internet Protocol Control Protocol (IPCP) Configuration Request message to the ASN GW/FA with an
MN address of 0.0.0.0.
9
The ASN GW/FA forwards a Proxy Mobile IP Registration Request message to the HA. The message includes fields such
as the MN's home address, the IP address of the FA (the care-of-address), and the FA-HA extension (security parameter
index (SPI)).
10
While the FA is communicating with the HA, the MN may send additional IPCP Configuration Request messages.
11
The HA responds with a Proxy Mobile IP Registration Response after validating the home address against it's pool. The
HA also creates a mobile binding record (MBR) for the subscriber session.
12
The MN and the ASN GW/FA negotiate IPCP. The result is that the MN is assigned the home address originally specified
by the AAA server.
13
While the MN and ASN GW/FA are negotiating IPCP, the HA and AAA server initiate accounting.
14
Upon completion of the IPCP negotiation, the ASN GW/FA and AAA server initiate accounting fully establishing the
session allowing the MN to send/receive data to/from the PDN.
15
Upon completion of the session, the MN sends an LCP Terminate Request message to the ASN GW to end the subscriber
session.
16
The PDSN/FA sends a Proxy Mobile IP De-registration Request message to the HA.
17
The ASN GW/FA send an LCP Terminate Acknowledge message to the MN ending the subscriber session.
18
The HA sends a Proxy Mobile IP De-Registration Response message to the FA terminating the R3 interface
19
The ASN GW/FA and the BS terminate the R6 session.
20
The HA and the AAA server stop accounting for the session.
21
The ASN GW and the AAA server stop accounting for the session.
Scenario 2: HA Allocates IP Address
The following figure and table display and describe a call flow in which the MN receives its IP address from the HA.
▄ Cisco ASR 5x00 Packet Data Network Gateway Administration Guide
446
Proxy-Mobile IP
Advertisement
Table of Contents
