Software Upgrade Wizard - AudioCodes Mediant 4000 SBC User Manual

User's Manual
Note:
•
No configuration is required on the device; the License Pool Manager Server
controls the allocation/de-allocation of its resource pool to the managed devices.
For more information on the License Pool Manager Server, refer to the EMS
User's Manual.
•
The allocation/de-allocation of SBC licenses to the device by the License Pool
Manager Server is service affecting and requires a device reset.
•
For HA systems, the License Pool Manager Server automatically allocates an
equal number of SBC licenses (sessions) to both the active and redundant
devices. For example, if the License Pool Manager Server allocates 200 sessions
to the active device, it also allocates 200 to the redundant. Thus, it is important to
take this into consideration when ordering a license pool.
•
If the device is restored to factory defaults, the SBC license allocated by the
License Pool Manager Server is deleted.
•
If the device is allocated an SBC license by the License Pool Manager Server that
exceeds the maximum number of sessions that it can support, the device sets the
number of sessions to its maximum supported.
37.4

Software Upgrade Wizard

The Web interface's Software Upgrade wizard lets you easily upgrade the device's
software version (.cmp file). You can also use the wizard to load an ini file and Auxiliary
files (e.g., CPT file). However, you can only use the wizard if you at least load a .cmp file.
Once loaded, you can select other file types to load.
You can also use the wizard to upgrade devices in High Availability (HA) mode. You can
choose between two optional HA upgrade methods:

System Reset Upgrade (non-Hitless): Both active and redundant devices are
upgraded simultaneously. Therefore, this method is traffic-affecting and terminates
current calls during the upgrade process. The process is as follows:
1. The active (current) device loads the .cmp file.
2. The active device sends the .cmp file to the redundant device.
3. Both active and redundant devices install and burn the file to flash memory with a
reset. In other words, no HA switchover occurs.

Hitless Upgrade: The devices are upgraded without disrupting traffic (i.e., current calls
are maintained). The process is as follows:
1. The active (current) device loads the .cmp file.
2. The active device sends the .cmp file to the redundant device.
3. The redundant device installs and burns the file to its flash memory with a reset.
The redundant device now runs the new software version.
4. An HA switchover occurs from active to redundant device. Therefore, current
calls are maintained and now processed by the previously redundant device,
which is now the active device.
5. The previously active device (now in redundant mode) installs and burns the file
to flash memory with a reset. Therefore, both devices now run the new software
version.
6. An HA switchover occurs from active device (i.e., the initial redundant device) to
redundant device (i.e., the initial active device) to return the devices to their
original HA state. Only the initial redundant deviceundergoes a reset to return to
redundant state.
Version 7.2 587
37. Software Upgrade
Mediant 4000 SBC