User's Manual

Installing the Base Station Equipment
BreezeMAX Modular Base Station System Manual 59
Insert a new AVU drawer and close the screws. The replacement should be
completed in less than 10 minutes.
2.2.12.2 Replacing an NPU
To minimize downtime and facilitate fast and easy NPU replacement, it is
recommended to maintain an updated copy of the NPU configuration. Refer to
Section 4.6.2.6 for details on preparing and uploading a backup file of the NPU
configuration.
1 Release the screws at the top and the bottom of the NPU's front panel.
2 Press the handles' red button until the handles are unlocked.
3 Wait until the blue HOT SWAP LED turns on, indicating that the module has
been disconnected and can be removed.
4 Press the handles down (the upper handle)/up (the lower handle) until the
module is unlocked. Firmly hold the handles and take the module out of the
chassis.
5 Disconnect all IF cables connecting the AU-IDUs to the AU-ODUs. This is
necessary as the initial configuration of the new NPU is most probably
inappropriate.
6 Firmly push the new NPU module into its intended slot (slot 5).
7 Press the handles up (the upper handle)/down (the lower handle)
simultaneously until you hear the locking click and the red buttons are
released. The blue HOT SWAP LED will briefly turn on, indicating that the
module is being powered up.
8 Secure the module in place by closing the screws at the top and bottom of the
front panel.
9 Download the backup file using a DOS based TFTP. Use the command: tftp i
<NPU port IP address> put <file name>. The default IP address of the MGMT
port is 10.0.0.1.
10 Use the monitor program to configure the IP parameters (IP address, Subnet
Mask, Default Gateway Address) of the MGMT port. These parameters are not
affected by the loaded file.
11 Reset the system.
12 Reconnect the IF cables.