Cisco Cisco ASR 5000
Description
Step
The BS and ASN GW/FA establish the R6 interface for the session.
2
The ASN GW/FA and MN negotiate Link Control Protocol (LCP).
3
Upon successful LCP negotiation, the MN sends a PPP Authentication Request message to the
ASN GW/FA.
ASN GW/FA.
4
The ASN GW/FA sends an Access Request message to the RADIUS AAA server.
5
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.
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.
6
The ASN GW/FA sends a EAP Authentication Response message to the MN.
7
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.
ASN GW/FA with an MN address of 0.0.0.0.
8
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)).
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)).
9
While the FA is communicating with the HA, the MN may send additional IPCP Configuration
Request messages.
Request messages.
10
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.
against it's pool. The HA also creates a mobile binding record (MBR) for the subscriber session.
11
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.
address originally specified by the AAA server.
12
While the MN and ASN GW/FA are negotiating IPCP, the HA and AAA server initiate accounting.
13
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.
fully establishing the session allowing the MN to send/receive data to/from the PDN.
14
Upon completion of the session, the MN sends an LCP Terminate Request message to the ASN
GW to end the subscriber session.
GW to end the subscriber session.
15
The PDSN/FA sends a Proxy Mobile IP De-registration Request message to the HA.
16
The ASN GW/FA send an LCP Terminate Acknowledge message to the MN ending the subscriber
session.
session.
17
The HA sends a Proxy Mobile IP De-Registration Response message to the FA terminating the R3
interface
interface
18
The ASN GW/FA and the BS terminate the R6 session.
19
HSGW Administration Guide, StarOS Release 19
106
Proxy-Mobile IP
Scenario 1: AAA server and ASN GW/FA Allocate IP Address