AudioCodes Mediant 4000 SBC, User Manual

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CHAPTER 32 HA Configuration
Mediant 4000 SBC | User's Manual
b. (Optional) Enable the HA Preempt feature by configuring the 'Preempt Mode' parameter to
Enable , and then setting the priority level of the device in the 'Preempt Priority' field. Make
sure that you configure different priority levels for the two devices. Typically, you would
configure the active device with a higher priority level (number) than the redundant device.
The only factor that influences the configuration is which device has the greater number;
the actual number is not important. For example, configuring the active with 5 and
redundant with 4, or active with 9 and redundant with 2 both assign highest priority to the
active device. Configuring the level to 10 does not cause a switchover upon Ethernet
connectivity loss. For more information on the HA Preempt feature, see
Device
Switchover upon Failure .
7. Burn the configuration to flash without a reset.
8. Power down the device.
9. Continue to Step 3: Initialize HA on the Devices .
Step 3: Initialize HA on the Devices
Once you have configured both devices for HA as described in the previous sections, follow the
procedure below to complete and initialize HA so that the devices become operational in HA. This
last stage applies to both devices.
➢
To initialize the devices for HA:
1. Cable the devices to the network.
You must connect both ports (two) in the Ethernet Group of the Maintenance interface
to the network (i.e., two network cables are used). This provides 1+1 Maintenance port
redundancy.
2. Power up the devices; the redundant device synchronizes with the active device and updates
its configuration according to the active device. The synchronization status is indicated as
follows:
● Active device: The Web interface's Monitor page displays "Synchronizing" in the 'HA
Status' field.
● Redundant device: The LED on the E-SBC module is lit yellow.
When synchronization completes, the redundant device resets to apply the received
configuration and software.
When both devices become operational in HA, the HA status is indicated as follows:
● Both devices: The Web interface's Monitor page displays "Operational" in the 'HA Status'
field.
● Active device: The LED on the E-SBC module is lit green.
● Redundant device: The LED on the E-SBC module flashes yellow.
3. Access the active device with its' OAMP IP address and configure the device as required. For
information on configuration done after HA is operational, see
Configuration while HA is
Operational .
Quick-and-Easy Initial HA Configuration
You can quickly set up two stand-alone devices into an HA system, by loading the same ini
configuration file with special parameters to each device. This ini file contains basic configuration
that identifies the devices by MAC address and applies the configuration accordingly.
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