Cisco ASR 5000 series Product Overview page 427

IP Services Gateway Overview
Figure 115. IPSG Message/Data Flow (RADIUS Snoop Mode)
Mobile
Station
OL-22938-02
RADIUS
Server
Acct Resp
Acct Req
Acct Req
s
r
s
n
IP Data
Access Gateway
(GGSN/PDSN/HA)
s
i
IP Data
IPSG
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