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Recovery Support; Accounting Support; Differentiated Services Code Point Marking - Cisco ASR 5000 Administration Manual

Enhanced wireless access gateway
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▀ Product Overview
Figure 14.

Recovery Support

The NAT framework takes care of recovering the NAT status and NAT flow. For the Local Traffic Breakout counters,
new micro checkpoint is added, which is sent as part of clp stats for D-eWAG callline.

Accounting Support

Direct IP data is accounted separately.
The following RADIUS AVPs support direct IP counts:
 SN-LBO-Acct-IN-Pkts: Indicates number of packets sent by UE directly to the Internet
 SN-LBO-Acct-Out-Pkts: Indicates number of packets received by UE directly from the Internet.
 SN-LBO-Acct-IN-Octets: Indicates number of octets sent by UE directly to the Internet.
 SN-LBO-Acct-Out-Octets: Indicates number of octets received by UE directly from the Internet.
Note that whereas direct IP data is accounted separately, there is only a cumulative Total Uplink and Total Downlink
data count available for the UE. It is not possible to identify 3G data sent for the subscriber from accounting messages
or CDR.

Differentiated Services Code Point Marking

Differentiated Services Code Point (DSCP) levels can be assigned to specific traffic patterns in order to ensure that data
packets are delivered according to the precedence with which they are tagged. The DiffServ markings are applied to the
IP header of every subscriber data packet transmitted in the downlink and/or uplink direction based on negotiated QoS
at GGSN and local configuration in the IPSG service.
DSCP values must be configured for different QCI values. The following table presents the traffic class to QCI mapping
(based on 3GPP spec 23.203).
▄ Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide
82
Downlink Data Path
DHCP-based Enhanced Wireless Access Gateway Overview

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