Cisco Cisco Packet Data Gateway (PDG) Guía Para Resolver Problemas
Proxy-Mobile IP
▀ How Proxy Mobile IP Works in WiMAX Network
▄ Cisco ASR 5000 Series Enhanced Feature Configuration Guide
OL-22982-01
Table 40. HA Assigned IP Address Proxy Mobile IP Call Flow Description
Step
Description
1
Mobile Node (MN) secures a traffic channel over the airlink with the BS.
2
The BS and ASN GW/FA establish the R6 interface for the session.
3
The ASN GW/FA and MN negotiate Link Control Protocol (LCP).
4
Upon successful LCP negotiation, the MN sends an EAP 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 IP address of the HA
to use.
GW/FA. The Accept message may contain various attributes to be assigned to the MN including the IP address of the HA
to use.
7
The ASN GW/FA sends an 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.
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 a Home Address indicator of 0.0.0.0, the IP address of the FA (the care-of-address), the IP address of the FA (the care-
of-address), and the FA-HA extension (security parameter index (SPI)).
as a Home Address indicator of 0.0.0.0, the IP address of the FA (the care-of-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. The response includes an IP address from one of its
locally configured pools to assign to the MN (its Home Address). The HA also creates a mobile binding record (MBR) for
the subscriber session.
locally configured pools to assign to the MN (its Home Address). 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.
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.
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.
session.
16
The ASN GW/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 PPP 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.