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Configuration worksheet for Geo Redundant High Availability

To configure the Geo Redundant High Availability feature for AE Services, you must have the information listed in the following table.

Field Description
Local AE Server HostName This is a display only field. The host name is configured when AE Services application is installed.

The host name of the local AE Server.

Local AE Server IP Address This is a display only field. The IP address is configured when AE Services application is installed.

The IP address of the AE Server.

Remote AE Server IP Address IP address of the remote AE Services server.
Remote AE Server User Name User name of any user who is a part of the super user group and has access to linux shell.

The default is cust.

Remote AE Server User Password The password of the remote user.
Eth0 Virtual IP Address (optional) The virtual IP address, which is used by the active AE Server.

This field is optional.

Eth1 Virtual IP Address (optional) The virtual IP address, which is used by the active AE Server.

This field is optional.

Eth2 Virtual IP Address (optional) The virtual IP address, which is used by the active AE Server.

This field is optional.

Failure Detection Interval The Failure Detection Interval determines how long you want AE Services to wait before the standby AE Services server becomes active if the standby AE Services server cannot reach the current active AE Services server. The range is 1 - 3600 seconds. The default value is 600 seconds.
Preferred Active Node (optional) The IP address of the preferred active node. The default value is empty.

If Preferred Active Node is administered, during split brain resolution the preferred node will be chosen as the active AE Services server. If Preferred Active Node is not administered, the current active AE Services server remains active. Split brain is a condition when both AE Services servers are running in active mode due to network failure. When the network between the AE Services servers comes up, you must keep only one AE Services server active.

This field is optional.

System Type The system type is based on the number of individual licenses allocated for this AE Services server. The system depends on the number of other AE Services licenses used on the AE Services server based on the following table. Choices are Small, Medium, and Large.
  HA Small License HA Medium License HA Large License
DLG (on/off) NA NA HA Large required
CVLAN (on/off) NA NA HA Large required
AE Services Advanced Small Switch HA Small required OK OK
AE Services Advanced Medium Switch NA HA Medium required OK
AE Services Advanced Large Switch NA NA HA Large required
TSAPI Simultaneous Users <= 1000 > 1000 and <= 5000 > 5000
Unified CC API Desktop Edition <= 1000 > 1000 and <= 5000 > 5000
Device Media and Call Control <= 500 > 500 and <= 1000 > 1000
noteNote

If an application exceeds the use of AE Services individual licenses for a configured Geo Redundant High Availability system size, AE Services Geo Redundant High Availability will enter the Geo Redundant High Availability license violation state. Once in the Geo Redundant High Availability license violation state, Geo Redundant High Availability will prohibit failover for any reason until the license violation state is cleared. There are two ways to clear the license violation state:

  • Acquire and install a higher level Geo Redundant High Availability license that is appropriate to AE Services individual license usage

  • Call Avaya Services to clear the violation state.

Reducing the usage of AE Services individual licenses after the license violation state is reached will not clear the license violation state.