AudioCodes Mediant 4000 SBC, User Manual

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CHAPTER 36 Upgrading the Device's Software
Mediant 4000 SBC | User's Manual
36 Upgrading the Device's Software
You can use the Web interface's Software Upgrade Wizard to 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:
a. The active (current) devices loads the .cmp file.
b. The active devices sends the .cmp file to the redundant deviceblade.
c. 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:
a. The active (current) device loads the .cmp file.
b. The active device sends the .cmp file to the redundant device.
c. The redundant device installs and burns the file to its flash memory with a reset. The
redundant device now runs the new software version.
d. An HA switchover occurs from active to redundant deviceblade. Therefore, current calls
are maintained and now processed by the previously redundant deviceblade, which is now
the active deviceblade.
e. 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.
f. 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 device undergoes a reset to return to redundant state.
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