Controlled Anchor Asn Gateway To Non-Anchor Asn Gateway Handover - Cisco ASR 5000 series Product Overview

ASN Gateway Overview
Figure 53.
To ASN BS(s)
R6
To ASN BS(s)
R6

Controlled Anchor ASN Gateway to Non-Anchor ASN Gateway Handover

For Controlled handovers, the ASN Gateway provides and/or supports the following functions:
Message Relay: The ASN Gateway provides the passive relay function for HO Request, HO Response, HO Ack,
HO Confirm, and HO Complete messages in a stateless fashion. The gateway keeps the statistics of the
different types of messages it has relayed. Retransmission of these messages is handled by the BS.
OL-22938-02
Distribution of Components and Function in ASN Gateway for Handover
Anchor ASN
GW
Authenticator
DHCP Proxy
(AAA Client +
Relay
Accounting)
Anchor Service
Flow Auth. Proxy MIP Client
(A-SFA)
Anchor Data Mobile IP
Path Function Foreign Agent
(A-DPF) (MIP FA)
Paging
Context Function Controller/
Location Updator
R4
Authenticator Paging
(AAA Client + Controller/
Location Updator
Accounting)
Serving Service
Flow Auth Proxy MIP Client
(S-SFA)
Serving Data Mobile IP
Path Function Foreign Agent
(S-DPF) (MIP FA)
DHCP Proxy
Context Function
Relay
Non-Anchor ASN
GW
To ASN HA
R3
Cisco ASR 5000 Series Product Overview ▄
ASN Call Procedure Flows ▀