Step 2: Configure The Second Device - AudioCodes Mediant 4000 SBC User Manual

User's Manual
c. (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 feature, see ''Device Switchover
upon Failure'' on page 602.
5. Burn the configuration to flash without a reset.
6. Power down the device.
7. Configure the second device (see ''Step 2: Configure the Second Device'' on page
609).

33.1.2.2 Step 2: Configure the Second Device

Once you have configured the first device for HA, you can configure the second device for
HA. As the configuration of the second device is similar to the first device, the following
procedure briefly describes each step. For detailed configuration such as the path to the
Web configuration pages, refer to the section on configuring the first device (''Step 1:
Configure the First Device'' on page 607).
Note:
from the network.

To configure the second device for HA:
1. Connect to the device in the same way as you did with the first device.
2. Configure the same OAMP, Media, and Control interfaces as configured for the first
device.
3. Configure a Maintenance interface for this device. The IP address must be different to
that configured for the Maintenance interface of the first device. The Maintenance
interfaces of the devices must be in the same subnet.
4. Configure the same Ethernet Groups and VLAN IDs of the network interfaces as
configured for the first device.
5. Configure the same Ethernet port Tx / Rx mode of the Ethernet Group used by the
Maintenance interface as configured for the first device.
6. Configure HA parameters in the HA Settings page:
a. In the 'HA Remote Address' field, enter the Maintenance IP address of the first
device.
Version 7.2
During this stage, ensure that the first device is powered off or disconnected
609
33. HA Configuration
Mediant 4000 SBC