AudioCodes Mediant 800 - Configuration While HA Is Operational

CHAPTER41 HA Configuration
Mediant 800 Gateway & E-SBC | User's Manual
HARemotePriority = 4
[ InterfaceTable ]
FORMAT InterfaceTable_Index = InterfaceTable_ApplicationTypes, InterfaceTable_
InterfaceMode, InterfaceTable_IPAddress, InterfaceTable_PrefixLength,
InterfaceTable_Gateway, InterfaceTable_InterfaceName, InterfaceTable_
PrimaryDNSServerIPAddress, InterfaceTable_SecondaryDNSServerIPAddress,
InterfaceTable_UnderlyingDevice;
InterfaceTable 0 = 6, 10, 10.33.45.40, 16, 10.33.0.1, "Voice", 0.0.0.0, 0.0.0.0, "vlan 1";
InterfaceTable 1 = 99, 10, 1.1.1.1, 24, 0.0.0.0, "HA", 0.0.0.0, 0.0.0.0, "vlan 2";
[ \InterfaceTable ]
4. Load the file to both devices (see Loading an ini File to the Device on page77).
5. To test your HA system, perform an HA switchover (see Initiating an HA Switchover on
page897).
● If the HA Preempt feature is enabled, the device with the highest priority becomes
the active unit. If the HA Preempt feature is not enabled, the first device to load the
file becomes the active unit, or if both load the file simultaneously, the device with
the "highest" IP address becomes the active unit.
● When configuration is applied to the device whose MAC is the value of the
HARemoteMAC parameter, all HA configuration is swapped between local and
remote parameters, including the IP address of the Maintenance interface, which is
swapped with the address configured for the HARemoteAddress parameter.
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 device
(through the Maintenance interface).
■ HA-related configuration on the active device is automatically updated on the redundant
device:
● Maintenance interface:
◆ Modified Maintenance interface address of the active device: The address is set as
the new 'HA Remote Address' value on the redundant device.
◆ Modified 'HA Remote Address' value on the active device: The address is set as the
new Maintenance interface address on the redundant device (requires a device reset).
◆ Modifications on all other Maintenance interface parameters (e.g., Default Gateway
and VLAN ID): updated to the Maintenance interface on the redundant device.
● 'Preempt Mode' parameter.
● 'Preempt Priority' parameter is set for the active device.
● Modified 'Redundant Preempt Priority' value is set for the redundant device.
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