Conventions Used .................................................................................................................................. viii

Contacting Customer Support ..................................................................................................................ix

Additional Information ............................................................................................................................... x

Enhanced Wireless Access Gateway Overview ............................................ 11

Introduction ............................................................................................................................................. 12

Platform Requirements ........................................................................................................................... 13

License Requirements ............................................................................................................................ 14

RADIUS-based Enhanced Wireless Access Gateway Overview ................. 15

Product Overview ................................................................................................................................... 16

Network Deployments and Network Interfaces .................................................................................. 17

Network Deployments .................................................................................................................... 17

Network Interfaces ......................................................................................................................... 18

Feature Description ................................................................................................................................ 19

R-eWAG-WLC/Wi-Fi AAA Interface ................................................................................................... 19

Control and Data Interfaces ........................................................................................................... 20

R-eWAG-GGSN Gn' Interface ............................................................................................................ 20

IP Address Allocation ..................................................................................................................... 21

Network Layer Service Access Point Identifier Allocation ............................................................. 21

Routing Area Identification Encoding ............................................................................................. 21

Differentiated Services Code Point Marking ...................................................................................... 21

Access Point Name Selection ............................................................................................................ 22

Quality of Service Profile Selection .................................................................................................... 23

GGSN Selection ................................................................................................................................. 23

GGSN Failover Case.......................................................................................................................... 23

Network Address Translation and Application Level Gateway Support ............................................. 23

Virtual APN Support ........................................................................................................................... 24

Offline Charging Support .................................................................................................................... 24

Triggers for Charging Information Addition and CDR Closure ...................................................... 25

Billing Record Transfer .................................................................................................................. 25

UE Identity and Location Information Support ................................................................................... 25

UE Identity Information Support ..................................................................................................... 25

UE Location Information Support ................................................................................................... 26

Lawful Intercept Support .................................................................................................................... 26

Bulk Statistics Support ....................................................................................................................... 26

Threshold Crossing Alerts Support .................................................................................................... 27

Congestion Control Support ............................................................................................................... 28

Redundancy Support.......................................................................................................................... 29

How it Works .......................................................................................................................................... 30

Session Setup .................................................................................................................................... 30

Session Setup using Accounting-Interim ....................................................................................... 33

Session Replacement ........................................................................................................................ 36

Session Setup Failure ........................................................................................................................ 37

Mandatory AVP Missing / No Resource ........................................................................................ 38

Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide ▄

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