Network Interfaces - Cisco ASR 5000 Administration Manual

Enhanced wireless access gateway
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▀ Product Overview
Important:
and Limitations

Network Interfaces

The Gn' reference point is located between the R-eWAG and the GGSN supporting GTPv1 and GTPv0 protocols. R-
eWAG supports GTP Path messages towards GGSN. Here, the R-eWAG acts as an SGSN and initiates the PDP Context
Creation procedure. For every UE, the R-eWAG creates one GTP tunnel with the GGSN. The UE's APN and IMSI are
forwarded to the GGSN in the Create PDP Context Request message. This APN is either the subscribed APN from the
HLR for the connecting user, or the locally configured default APN at the R-eWAG.
▄ Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide
18
For information on dependencies and limitations of these deployment options see the
section.
RADIUS-based Enhanced Wireless Access Gateway Overview
Dependencies

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