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Contents
Revision History ........................................................................................................ 4
Warning ...................................................................................................................... 5
About This Guide ...................................................................................................... 7
1 Rountines Maintenance ................................................................................. 9
Rountines Maintenance Tasks .............................................................................. 9
Daily Maintenance Tasks................................................................................... 9
Checking Performance Events ........................................................................... 11
2 Performance Descriptions ........................................................................12
Performance Parameters .................................................................................... 12
3 Troubleshooting Procedures and Principles ........................................13
Maintenance Requirements .............................................................................. 13
Classification of Faults...................................................................................... 14
4 Troubleshooting .........................................................................................16
LED Problems and Countermeasures .............................................................. 16
Console Problem & Countermeasure ........................................................ 17
SNMP Manager Problem and Countermeasures ................................... 17
TELNET Problem & Countermeasures ............................................................ 18
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