Cisco ASR 5000 Series User Manual

HA Overview
▀ Network Deployment Configurations
▄ Cisco ASR 5000 Series Product Overview
OL-22938-02
Table 56. Mobile IP Call Flow Description
Step
Description
1
Mobile Node (MN) secures a traffic channel over the airlink with the RAN through the BSC/PCF.
2
The PCF and PDSN establish the R-P interface for the session.
3
The PDSN and MN negotiate Link Control Protocol (LCP).
4
The PDSN and MN negotiate the Internet Protocol Control Protocol (IPCP).
5
The PDSN/FA sends an Agent Advertisement to the MN.
6
The MN sends a Mobile IP Registration Request to the PDSN/FA.
7
The PDSN/FA sends an Access Request message to the visitor AAA server.
8
The visitor AAA server proxies the request to the appropriate home AAA server.
9
The home AAA server sends an Access Accept message to the visitor AAA server.
10
The visitor AAA server forwards the response to the PDSN/FA.
11
Upon receipt of the response, the PDSN/FA forwards a Mobile IP Registration Request to the appropriate HA.
12
The HA sends an Access Request message to the home AAA server to authenticate the MN/subscriber.
13
The home AAA server returns an Access Accept message to the HA.
14
Upon receiving response from home AAA, the HA sends a reply to the PDSN/FA establishing a forward tunnel. Note that
the reply includes a Home Address (an IP address) for the MN.
15
The PDSN/FA sends an Accounting Start message to the visitor AAA server. The visitor AAA server proxies messages to
the home AAA server as needed.
16
The PDSN return a Mobile IP Registration Reply to the MN establishing the session allowing the MN to send/receive data
to/from the PDN.
17
Upon session completion, the MN sends a Registration Request message to the PDSN/FA with a requested lifetime of 0.
18
The PDSN/FA forwards the request to the HA.
19
The HA sends a Registration Reply to the PDSN/FA accepting the request.
20
The PDSN/FA forwards the response to the MN.
21
The MN and PDSN/FA negotiate the termination of LCP effectively ending the PPP session.
22
The PCF and PDSN/FA close terminate the R-P session.
23
The HA sends an Accounting Stop message to the home AAA server.
24
The PDSN/FA sends an Accounting Stop message to the visitor AAA server.
25
The visitor AAA server proxies the accounting data to the home AAA server.

Cisco ASR 5000 Series Specifications

General

Brand	Cisco
Model	ASR 5000 Series
Category	Network Router
Language	English