Step 3: Initialize Ha On The Devices; Configuration While Ha Is Operational - AudioCodes Mediant 4000 SBC User 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'' on page 602.
7. Burn the configuration to flash without a reset.
8. Power down the device.
9. Continue to ''Step 3: Initialize HA on the Devices'' on page 610.

33.1.2.3 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.
Note: 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
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
•
Redundant device: The
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'' on page 610.
33.2

Configuration while HA is Operational

When the devices are operating in HA state, subsequent configuration is as follows:

All configuration, including HA, is done on the active device only.

Non-HA configuration on the active device is automatically updated on the redundant
User's Manual
LED on the E-SBC module is lit yellow.
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LED on the E-SBC module flashes yellow.
610
Mediant 4000 SBC
Document #: LTRT-40203