
3.7 Maintaining the Information Center.............................................................................................................................60
3.7.1 Clearing Statistics......................................................................................................................................................60
3.7.2 Monitoring the Information Center...........................................................................................................................61
3.8 Configuration Examples...............................................................................................................................................61
3.8.1 Example for Outputting Logs to the Log File...........................................................................................................61
3.8.2 Example for Outputting Logs to a Log Host.............................................................................................................63
3.8.3 Example for Outputting Traps to the SNMP Agent..................................................................................................66
3.8.4 Example for Outputting Traps to the Console...........................................................................................................68
3.9 FAQ..............................................................................................................................................................................69
3.9.1 Why Cannot Command Line Operation Logs Be Displayed in the Log Buffer and How Can These Logs Be Displayed
in the Log Buffer?...............................................................................................................................................................70
3.9.2 Why Cannot an AR Router Send Trap Messages?....................................................................................................70
4 Fault Management Configuration............................................................................................71
4.1 Introduction to Fault Management...............................................................................................................................72
4.2 Principles......................................................................................................................................................................72
4.2.1 Concepts....................................................................................................................................................................72
4.2.2 Principles...................................................................................................................................................................73
4.2.3 Alarm Severity...........................................................................................................................................................73
4.2.4 Alarm Correlation......................................................................................................................................................74
4.3 Default Configuration...................................................................................................................................................75
4.4 Configuring Fault Management....................................................................................................................................75
4.4.1 Configuring Alarm Management...............................................................................................................................75
4.4.1.1 Setting the Alarm Severity.....................................................................................................................................76
4.4.1.2 Configuring the Alarm Reporting Delay Function.................................................................................................77
4.4.1.3 Configuring Alarm Correlation Suppression..........................................................................................................78
4.4.1.4 Checking the Configuration....................................................................................................................................79
4.4.2 Configuring the Event Reporting Delay Function.....................................................................................................79
4.4.3 Maintenance...............................................................................................................................................................80
4.4.3.1 Clearing Alarms and Events...................................................................................................................................80
4.4.3.2 Monitoring Alarms and Events...............................................................................................................................81
4.5 Configuration Examples...............................................................................................................................................81
4.5.1 Example for Configuring Alarm Management..........................................................................................................81
4.6 References....................................................................................................................................................................83
5 NTP Configuration......................................................................................................................85
5.1 NTP Overview..............................................................................................................................................................86
5.2 Principles......................................................................................................................................................................87
5.2.1 Operating Principle....................................................................................................................................................87
5.2.2 Network Architecture................................................................................................................................................89
5.2.3 Operating Mode.........................................................................................................................................................90
5.2.4 NTP Access Control..................................................................................................................................................95
5.3 Application...................................................................................................................................................................97
Huawei AR150&200&1200&2200&3200 Series Enterprise
Routers
Configuration Guide - Device Management Contents
Issue 05 (2014-01-16) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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