Cisco ASR 5000 Series, Обзор продукта

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GGSN Support in GPRS/UMTS Wireless Data Services
Features and Functionality - Base Software ▀
Cisco ASR 5000 Series Product Overview ▄
OL-22938-02
profile returned by AAA will override any CC provided by the SGSN, the GGSN or per APN configuration. All 16
profile behaviors can be defined explicitly or the default configuration for that profile is used.
Support of all GGSN generated causes for partial G-CDR closure
Provides more detailed eG-CDR and/or G-CDR closure causes as per 3GPP TS 32.298.
System handles the GGSN generated causes for partial closure of CDRs. It supports various type of causes including
Radio Access Technology Change, MS Time Zone Change, Cell update, inter-PLMN SGSN change, PLMN id change,
QoS, Routing-Area update etc.
Threshold Crossing Alerts (TCA) Support
Thresholding on the system is used to monitor the system for conditions that could potentially cause errors or outage.
Typically, these conditions are temporary (i.e high CPU utilization, or packet collisions on a network) and are quickly
resolved. However, continuous or large numbers of these error conditions within a specific time interval may be
indicative of larger, more severe issues. The purpose of thresholding is to help identify potentially severe conditions so
that immediate action can be taken to minimize and/or avoid system downtime.
The system supports Threshold Crossing Alerts for certain key resources such as CPU, memory, IP pool addresses, etc.
With this capability, the operator can configure threshold on these resources whereby, should the resource depletion
cross the configured threshold, a SNMP Trap would be sent.
The following thresholding models are supported by the system:
Alert : A value is monitored and an alert 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.
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 value.
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‖