Cisco ASR 5000 Series - Page 565

PDN Gateway Overview
How the PDN Gateway Works ▀
Cisco ASR 5000 Series Product Overview ▄
OL-22938-02
Figure 141. Subscriber-initiated Attach (initial) Call Flow
Create Default
Bearer Rsp
Create Default
Bearer Req
Update
Bearer Rsp
Update
Bearer Req
Attach
Complete
Attach
Accept
Radio Bearer
Est Rsp
Radio Bearer
Est Req
Create Default
Bearer Rsp
PCRF
Interactions
Create Default
Bearer Req
eNodeB MME S-GWUE
PDN
P-GW PCRF HSS
1
Identity Req
Identity Rsp
Authentication/Security/ME Identity
Update Location
Insert Subscriber Data
Insert Subscriber Data Ack
Update Location Ack
Uplink Data
1
st
Downlink Data
1
st
Downlink Data
Update Location Req
Update Location Rsp
Data
2
3
Attach Req
Attach Req
4
5
6
7
8
9
PDN
PDN
10
11
12
13
14
15
16
17
18
19
20
21
22
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