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▀ Features and Functionality - Base Software
Alarm: Both high and low threshold are defined for a value. An alarm condition occurs when the value reaches
or exceeds the configured high threshold within the specified polling interval. The alert is generated then
generated and/or sent at the end of the polling interval.
Thresholding reports conditions using one of the following mechanisms:
SNMP traps: SNMP traps have been created that indicate the condition (high threshold crossing and/or clear) of
each of the monitored values.
Generation of specific traps can be enabled or disabled on the chassis. Ensuring that only important faults get
displayed. SNMP traps are supported in both Alert and Alarm modes.
Logs: The system provides a facility called threshold for which active and event logs can be generated. As with
other system facilities, logs are generated Log messages pertaining to the condition of a monitored value are
generated with a severity level of WARNING.
Logs are supported in both the Alert and the Alarm models.
Alarm System: High threshold alarms generated within the specified polling interval are considered
"outstanding" until a the condition no longer exists or a condition clear alarm is generated. "Outstanding"
alarms are reported to the system's alarm subsystem and are viewable through the Alarm Management menu in
the Web Element Manager.
The Alarm System is used only in conjunction with the Alarm model.
Important:
Configuration Guide.
UE Time Zone Reporting
This feature enables time-based charging for specialized service tariffs, such as super off-peak billing plans
Time Zone of the UE is associated with UE location (Tracking Area/Routing Area). The UE Time Zone Information
Element is an attribute the MME tracks on a Tracking Area List basis and propagates over S11 and S5/S8 signalling to
the P-GW.
Time zone reporting can be included in billing records or conveyed in Gx/Gy signaling to external PCRF and OCS
servers.
Virtual APN Support
Virtual APNs allow differentiated services within a single APN.
The Virtual APN feature allows a carrier to use a single APN to configure differentiated services. The APN that is
supplied by the MME is evaluated by the P-GW in conjunction with multiple configurable parameters. Then, the P-GW
selects an APN configuration based on the supplied APN and those configurable parameters.
APN configuration dictates all aspects of a session at the P-GW. Different policies imply different APNS. After basic
APN selection, however, internal re-selection can occur based on the following parameters:
Service name
Subscriber type
MCC-MNC of IMSI
Domain name part of username (user@domain)
▄ Cisco ASR 5x00 Packet Data Network Gateway Administration Guide
68
For more information on threshold crossing alert configuration, refer to the Thresholding
PDN Gateway Overview
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