4.6 Querying and Extracting Alarm Information on NodeB
4.6.1 Querying Alarm Information on NodeB
During querying cell states through RNC, if a cell is abnormal, record the name of the NodeB related to the cell. Start NodeB OM system to log in to the NodeB. Check the alarm information about the cell and the historical alarm. The causes to abnormal cell are as below.
I. Alarms on Transmission
If the system prompts the information shown in Figure 4-28, network connection is problematic. You can re-log in to BSC6800 OM system, and query E1T1 number of the NodeB.
Figure 4-28 Abnormal login for NodeB
2007-12-13 All rights reserved Page139 , Total220 Figure 4-29 shows querying E1T1 number by executing LST NodeB command in BSC6800 OM system.
Figure 4-29 Querying E1T1 number in BSC6800 OM system.
From previous querying, you can obtain the following information about E1T1:
l Subrack No. = 1
l Bearing slot No. = 0
l Bearing UNI link No. = 22
In BSC6800 OM system, view the E1T1 state by executing the following command:
DSP E1T1: SRN=1, SN=0, PT=WBIE_EPORT, LNKN=22;
Figure 4-30 shows querying E1T1 state in BSC6800 OM system.
2007-12-13 All rights reserved Page140 , Total220 Figure 4-30 Querying E1T1 state in BSC6800 OM system
From Figure 4-30, you can see "Link running state = Fault", and this means that E1T1 is in abnormal work state, so you must check the transmission of the NodeB.
II. Other Alarms
Start NodeB OM system, log in to the NodeB. After starting NodeB OM system, and double click Basic Cabinet icon. The physical structure of NodeB is displayed. The physical structure of NodeB 3806/3806A and NodeB 3802C is different. You can query other alarms in two ways.
The first method for querying NodeB alarms is directly querying alarm on NodeB board.
Figure 4-31 shows viewing board states on NodeB3806A.
2007-12-13 All rights reserved Page141 , Total220 Figure 4-31 Viewing state of boards on NodeB3806A
If problems exist in NodeB3806A hardware, yellow or red alarms appear on the corresponding boards.
l Red indicates a critical alarm.
l Yellow indicates a minor alarm.
Minor alarms exist on NPMU and NLPA shown in Figure 4-31.
Right click on problematic NLPA, and select Query Active Alarms. Current alarms on the board are displayed, as shown in Figure 4-32.
Figure 4-32 Content of alarm on NLPA board
From Figure 4-32, temperature increase out of range and this leads to automatic shutdown of NLPA. The causes might be:
l The NodeB is an outdoor cabinet, with air-conditioner. If the NodeB air-conditioner works abnormally, temperature in the NodeB maybe out of range. This cause is much probable if alarms exist in three NLPAs.
l The NLPA fan is problematic, and this leads to temperature out of range in part of NLPA.
2007-12-13 All rights reserved Page142 , Total220 Right click on the NPMU, and select Query Active Alarms. The NPMU alarm is displayed, as shown in Figure 4-33.
Figure 4-33 Content of NPMU alarm
From Figure 4-33, you can see alarm content: air-conditioner/heat-exchanger failure and ambient temperature out of range.
The second method for querying NodeB alarm is querying alarms through alarm management system. Perform the following steps:
1) Click icon in NodeB OM system, start Alarm Management System, and query current and historical alarms on NodeB Figure 4-34 show the current alarms in NodeB alarm management system.
Figure 4-34 Current alarms in NodeB alarm management system
2) Select Query > Query Alarm Log… on NodeB Alarm Management System interface
A Query Alarm Log dialog box is displayed, as shown in Figure 4-35.
2007-12-13 All rights reserved Page143 , Total220 Figure 4-35 Viewing configuration of NodeB alarm log
3) In Query Alarm Log dialog box, you can configure alarm log
Select… And you can
Cleared View historical alarms (alarms are removed) Not Cleared View historical alarms (alarms still exist) Data/Time Type time range for querying historical alarms Return Numbers (1–1000) Type the number of alarms to be viewed
4) Click OK after configuration. Historical alarms are displayed in Figure 4-36.
Alarms in grey are removed.
2007-12-13 All rights reserved Page144 , Total220 Figure 4-36 Querying historical alarms on NodeB
To query and extract alarm information on NodeBv1.7, perform the following steps:
Start NodeB OM system, log in to the NodeB. After starting NodeB OM system, and double click Basic Cabinet icon. The physical structure of NodeB is displayed. The physical structure of NodeB 3812E and NodeB 3802C is different. You can query other alarms in two ways.
The first method for querying NodeB alarms is directly querying alarm on NodeB board.
If problems exist in NodeB3812E hardware, yellow or red alarms appear on the corresponding boards.
l Red indicates a critical alarm.
l Yellow indicates a minor alarm.
Figure 4-37 shows viewing board states on NodeB3812E.
2007-12-13 All rights reserved Page145 , Total220 Figure 4-37 Viewing state of boards on NodeB
Right click on problematic MAFU, and select Query Active Alarms. Current alarms on the board are displayed, as shown in Figure 4-38.
Figure 4-38 Content of alarm on MAFU board
2007-12-13 All rights reserved Page146 , Total220 Figure 4-39 Content of alarm on NMPT board
The second method for querying NodeB alarm is querying alarms through alarm management system. Perform the following steps:
5) Click icon in NodeB OM system, start Browse Alarm, and query current and historical alarms on NodeB.
Figure 4-34 shows the current alarms in NodeB alarm management system.
Figure 4-40 Current alarms in NodeBv1.7 alarm management system
2007-12-13 All rights reserved Page147 , Total220 6) Select Fault Management > Query Alarm Log… on NodeB Alarm Managemen
t System interface.
A Query Alarm Log dialog box is displayed, as shown in Figure 4-41.
Figure 4-41 Viewing configuration of NodeBv1.7 alarm log
7) In Query Alarm Log dialog box, you can configure an alarm log:
Select… And you can
Fault Cleared View historical alarms (alarms are removed) Fault Not Cleared View historical alarms (alarms still exist) Alarm Start/End Date/Time Type time range for querying historical alarms Return Amount (1-1000) Type the number of alarms to be viewed
8) Click OK after configuration. Historical alarms are displayed in Figure 4-42.
Alarms in grey are removed. You can see settings of other advanced options, such as Alarm Severity, Detailed Option, and Physical Option.
2007-12-13 All rights reserved Page148 , Total220 Figure 4-42 Querying historical alarms on NodeBv1.7