Solutions to Cisco switches

I believe that many users who use CISCO switches have encountered many problems. Here we have analyzed how to solve common problems of Cisco switches. The data of Cisco switch 03 is a complete database file, the default file name is bam date. dat: Normally, BAM automatically backs up the database every morning and retains the data of the last three days. Before a large amount of data changes or major operations, you can use the "BKPDB" command to back up data. This command backs up the BAM Database and registry to a system-defined directory.

If you perform multiple backups within one day, you must manually modify the name of the last backup file to avoid duplication with the default file name. The procedure is as follows:

1. Check the status of boards, relay circuits, and signaling links of each module, including the 7th, V5, and PRA links, record the status, and check the circuit and link status through batch commands, save the output file of the check result.

2. Update the Count table RSTBILPOL), and retrieve the ticket STRBILIF ).

3. Run the BKPNSV command to back up new services.

4. Run the EnterpriseManager tool on BAM to back up five databases, including Bam, BillData, Alarm, Stats, and Test. (The backup file name has no special requirements. We recommend that you follow "database name + year/day + Old. and back up to MO or CD and workstation. NOTE: For the backup method, Select Start> Programfiles> Microsoft.

SQLServer7.0 "->" EnterpriseManager ", expand" Microsoft SQL Servers "->" SQL Server group "-> machine name-> Databases. You can see Databases such as Bam and BillData, right-click the Database to be backed up, select "All Tasks"-> "Backup Database", select "Remove" to delete the list under "Destination", and then select "Add ", enter the Name of the File to be backed up (for example, e: Bam20060429Old) in the edit box after "File Name. bak), click "OK ".

5. Recovery Method: Because BAM does not provide a recovery command, you must use the MicrosoftSQLServers Enterprise Manager to restore data. Before restoring data, you must stop the BAMSERVICE by double-clicking the bam service in the "SERVICE" icon of the "control panel" to change the start mode to "Manual ". Then restart the server. After data is restored, the "Automatic" mode is restored.

Recovery Method: select "Start"-> "Programfiles"-> "Microsoft SQL Server 7.0"-> "Enterprise Manager ", expand "Microsoft SQL Servers"-> "SQL Server group"-> machine name-> Databases, You can see Databases such as Bam and BillData, right-click the database to be backed up, select "All Tasks"-> "Restore Database", select "From Device" in the Restore options in the General interface of the window, and then select "Add ", in the edit box after "File Name", select the data File Name backed up previously (for example, e: Bam20060429Old. bak), click "OK ". Finally, on the OPTIONS page, select forcerestore over existing database.

Fault Symptom Solution:

1. Fault symptom: the user in the UTM frame fails. After the program and data are reloaded, the SIG Board reports an exception. 304 users in the UTM frame of a module experienced a fault (the DRV board is not started). After power loss, the user board, DRV board, and PWX board were replaced, and various connections were checked, if the fault cannot be eliminated, it is decided to change the mother frame. The whole module needs to be powered down and the module is powered down. After the mother frame is changed, the box is displayed as normal, but all users in the module have no bee sound, the two SIG boards in the control box are displayed as abnormal, and various processing is performed on the module, but the SIG board is still abnormal.

Handling Procedure: After a user fault is found in the UTM frame, the user board, DRV board, and PWX board are replaced, and various connections are checked. The fault cannot be eliminated, and the mother frame is replaced, the module is still invalid. After the MPU board program and data are loaded to the module, an exception is reported on the SIG board, and the whole module has no signal. After on-site inspection and handling, the failure of the control panel is found, at the same time, the Standby MPU board is faulty, which causes potential risks. Due to a network board failure, the coordination between the Network Board and the master Board fails. As a result, one of the users in the frame is abnormal and in the fault state. At the same time, the SIG Board reports an exception after the program and data are loaded, because the SIG board already has a hidden danger, faults may occur sooner or later. Change the mother frame of the control box, and resume communication after replacing the two network boards and SIG boards.

Cause Analysis: Each module of the Cisco switch is equipped with two network boards for primary backup, but the two network boards are faulty at the same time, and the Control Frame of the module is CB01, the model is old and prone to faults. It should be replaced with CB02.

2. fault description: The UTM half-Frame user is faulty. the user does not have a sound and the Board is invalid. Some users complain that there is no sound, and users who fail to be found are concentrated in a half frame. Users in this half frame sometimes have a sound or sometimes no sound. After a period of testing, some soundless users have a beep, and the faulty users are not fixed.

Handling Procedure: After the UTM half Frame user fault is found, the fault cannot be eliminated after the user board, DRV board, and PWX board are replaced; the HW line and NOD line are checked correctly, and the power supply is tested, if the voltage is unstable, the fault will be restored after the power cord is reconnected.

Cause Analysis: if the power supply line of the mother frame is faulty, the power supply voltage is unstable, affecting the users of the frame.