Prerequisites

Procedure

1. Select the spare. Select a spare board whose veneer parameters are identical to those of the veneer being replaced.

   
   

   Description:

   If the software version carried on the replaced master control veneer board is lower than the device version, you need to upgrade the software on the master control board to the same version as the device; if it is higher than the device version, you need to clear the library of the master control first, and then downgrade the software of the master control board to the same version as the device.

   
   

2. Queries the current alarms of the network element.
3. Upload the configuration data of the GSCC board.
   1. In the main menu, select Configuration > Network Element Configuration Data Management.
   2. Select the network element for which you want to replace the board, click the button, and the network element will appear in the Configuration Data Management List.
   3. Select the network element in the "Configuration Data Management List", and select "Upload" in the right-click menu.
   4. A progress bar will pop up to indicate the progress of the upload. Close the "Result" dialog box when the upload is complete.
4. Check the data consistency between the network administrator and the network element. Check the consistency of the data between the network administrator and the network element. After the check passes, proceed to the subsequent operations.
   1. Select "Configuration > Network Element Configuration Data Management" in the main menu.
   2. Select the network element in the object tree on the left and click.
   3. Click Consistency Verification.
   4. Click OK in the pop-up "Confirm" prompt box to start the verification, and a progress bar will appear to show the progress of the operation.
   5. The "Operation Result" dialog box pops up, and you can click "Close".

   
   

   Explanation:

   When the data consistency between the network administrator and the network element does not pass, you need to upload the data through the network administrator to make the data on the network administrator side consistent with the data on the host side.

   
   

5. Query the user data of the network element.
   1. Right-click on the network element icon and select "Network Element Manager".
   2. In the "Function Tree", select "Security > Network Element User Management".
   3. Click Query.
   4. The returned network element user data is recorded for use when restoring network element user data.
6. Queries the current user of the network element.
   1. Select "Security > Network Element Login Management" in the "Function Tree".
   2. Select the network element in the Network Element Login Management table and click Query.
   3. The current users of the returned network element logins are recorded for use when restoring user data for the network element.
7. Record the IP, gateway IP, and subnet mask of the network element.
   1. Right-click on the network element icon and select "Network Element Manager".
   2. In the function tree, select "Communication > Communication Parameter Settings" to query the network element IP, gateway IP and subnet mask.
8. Record the network element ID and extension ID.
   1. Right-click on the network element icon and select "Properties".
   2. Look up the network element ID and extension ID in the Network Element Properties tab.
9. Record the LSR ID.
   1. In the main topology, select the network element for which you want to record the LSR ID, right-click it, and select "Network Element Manager".
   2. In the function tree, select "Configuration > Packet Configuration > MPLS Configuration > Basic Configuration".
   1. In the "LSR ID" in the right window, you can query the LSR ID of the network element.
10. Backup the network element database.
    1. Select "System > Network Element Software Management > Network Element Data Backup/Restore" in the main menu.
    2. Select the network element in the Network Element View and click Backup.
    3. After replacing GSCC boards, you can restore the network element database with the backed up network element database information.
11. Replacing a single board is categorized into the following three scenarios:

    
    

    Description:

    • Unplugging the veneer will report BD_STATUS and COMMUN_FAIL alarms, and the alarms will be automatically lifted when the new veneer comes online.
    • The main board is the working board on the network management, the standby board is the protection board on the network management, and the current board refers to the single board that is currently working.

    
    

    • Scenario 1: Standby board failure.

      Replace only the spare board and notify field maintenance to replace the single board directly.

    • Scenario 2: Primary board failure.

      Replace only the primary board.

      1. Determine if a master/backup reversal has occurred.
         1. Right-click on the network element icon and select "Network Element Manager".
         2. In the "Function Tree", select "Configuration > Single Board 1+1 Protection".
         3. In the "1+1 Protection Relationship List", if the parameter values of "Current Board" and "Working Board" are the same, then no master-standby reversal has occurred, and you can continue to the next step for manual master-standby reversal; if the parameter values are different, then master-standby reversal has occurred; if the parameter values are different, then master-standby reversal has occurred. If the parameter values are different, then it means that the master-standby reversal has occurred, go to step 11.d, and notify the on-site maintenance personnel to directly replace the single board.
      2. Determine whether the current backup board is working normally. If it works normally, the standby board indicator (STAT) is green. If the current spare board is faulty, notify the field maintenance personnel to replace the spare board directly.
      3. Query the current master and backup synchronization status, and perform master and backup reversal for the board in the network management.
         Caution:

         Before unplugging the board, you must ensure that the current master and backup master boards are in synchronized status, otherwise you cannot unplug the board.

         1. Right-click on the network element icon and select "Network Element Manager".
         2. In the Function Tree, select Configuration > Single Board 1+1 Protection.
         3. In the "1+1 Protection Relationship List", select the "Master Protection Pair" of the network element, and then select "Work Protection Inversion" in the right-click menu. Click "Confirm" in the pop-up dialog box. The "Operation Result" dialog box pops up, click "Close".
         4. Query the alarms and performance events in the network management, confirm that there are no new alarms and performance events, and query whether the service is normal. If the service is normal, there should be no new abnormal alarms and performance events, indicating that the inversion is successful.
            Explanation:

            If there is an error when reversing the master and backup status of a single board, it may be that the master and backup single boards are still being backed up, wait for at least five minutes before reversing the operation.

      4. Remove and replace the veneer that needs to be replaced.
      5. Check and confirm that the current spare board is working properly.
         Instructions:

         Under normal circumstances, after plugging in the spare board, the spare board will automatically soft reset once. If the database of the original master board is abnormal, you need to restore the database or re-download the configuration after the soft reset is completed.

      6. Use the network management to release the inversion.
         1. Right-click on the network element icon and select "Network Element Manager".
         2. In the "Function Tree", select "Configuration > Single Board 1+1 Protection".
         3. In the "1+1 Protection Relationship List", select the "Master Protection Pair" of the network element, and then select "Restore Working Protection" in the right-click menu. Click "Confirm" in the pop-up dialog box. The dialog box of "Operation Result" pops up, click "Close".
         4. Click Query. The "Result" dialog box pops up, and you can click "Close". If the board position and board name of the replaced board are displayed on the current board, it means that uninverting is successful.
      7. Verify that the current working board is working normally. Query the single-board alarms to confirm that the original alarms have been lifted.
    • Scenario 3: The primary and backup boards fail at the same time, or are frequently reset.

      Replace the primary and backup boards.

      Instructions:

      You can only replace both the primary and standby boards at the same time if you have already backed up the network element database.

      1. Remove and replace the spare and primary boards that need to be replaced.
      2. Insert the prepared spare parts.
      3. Wait for a certain period of time (about 5 minutes) and observe the status of each board indicator:
         • The "STAT" lamp or "PROG" lamp of each single board should be green and on for a long time, indicating that the single board has been operating normally.
         • The "PWRA" and "PWRB" lights of the GSCC board should be green and always on, indicating that the power supply is normal.
      4. Connect the Ethernet port of the AUX board of the network element and the portable machine with network management with a network cable. Observe that the indicator light of the inserted board should be green.
      5. Log in and create the network element:
         1. In the network management interface, select "File > Search > Network Element". Click Add to bring up the Search Domain Entry dialog box. Select the Address Type as "IP Segment of Gateway Element" or "IP Address of Gateway Element" or "NSAP Address", and then enter the "Search Address", "Search Field", "Search Field" and "Search Field". Address", "User Name" and "Password", click "OK".
         2. Click Next to search for the network element. After the network element is displayed in the search, click Terminate. Click Yes in the pop-up dialog box to close the dialog box.
         3. Select the network element to be created in the "Searched Network Elements" list, and click Create Network Element. The "Create Network Element" window pops up. Set the user name and password, and then click "OK". The "Result" dialog box pops up, indicating that the operation was successful. Click "Close".
      6. Modify the IP address, gateway IP address and subnet mask of the network element:
         1. In the main topology, select the network element whose IP address has been replaced, right-click it, and select "Network Element Manager".
         2. In the function tree, select "Communication > Communication Parameter Settings".
         3. Set the IP address of the network element, gateway IP and subnet mask according to the original GSCC board information. Click "Apply". A warning window pops up twice. Click OK to close the window. The "Operation Result" dialog box pops up, indicating that the operation is successful. Click Close.
      7. Modify the network element ID and extension ID:
         1. In the main topology, select the network element that you want to modify the network element ID and extension ID, right-click it, and select "Login". The "Operation Result" dialog box pops up, indicating that the operation is successful. Click Close. Select the network element, right-click it, and select "Network Element Manager".
         2. In the function tree, select Configuration > Network Element Properties.
         3. In the Network Element Properties list, click "Modify Network Element ID". The "Modify Network Element ID" dialog box pops up, set the new ID and new extended ID according to the original GSCC, and click "OK".
      8. Modify the LSR ID.
         1. In the main topology, select the network element whose LSR ID needs to be modified, right-click it, and select "Network Element Manager".
         2. In the function tree, select "Configuration > Packet Configuration > MPLS Management > Basic Configuration".
         3. Click "LSR ID" to set the LSR ID of the network element according to the information of the replaced GSCC board.
         4. Click Apply to complete modifying the LSR ID of the network element.
         Note:

         If you have configured packet services before replacing the GSCC board, you need to manually configure the LSR ID again after replacing the board, and ensure that the new LSR ID is the same as the LSR ID of the GSCC before replacement.

      9. Set the network element ECC extension mode:
         1. In the main topology, select the network element that needs to modify the ECC extension mode of the network element, right-click it, and select "Network Element Manager".
         2. In the function tree, select "Communication > ECC Management".
         3. On the "Ethernet Extension ECC Parameters" screen, set the "ECC Extension Mode" to the opposite of the initial mode, and click "Apply". The "Result" dialog box pops up, and then click "Close".
      10. After restoring the network element database, upload the network element configuration information to the network administrator.
12. Verify that the current primary and backup boards are working properly.

    
    

    • All cross-connections should be present before replacement.
    • Protection should be fully present before replacement.
    • Query the veneer alarms to confirm that the alarms generated by the original faulty veneer have been lifted and no new alarms have been added.