Public and Private IP Addresses

IP addresses can be used to access appliances virtually.

LogLogic failover is based on an active/standby architecture and provides a single system image composed of two appliances of the same type. The two appliances can be treated as a virtual appliance accessed using a single public IP address.

Warning: It is strongly recommended that in an HA pair, the two appliances must have:
  • the same model
  • the same LogLogic LMI and LogLogic LSP versions (the hot fix versions need not match)

You must configure each of the two appliances using a private IP address. To configure the private IP address, use the System Settings > Network tab on the GUI or set ip command on the CLI.

The public IP address is the single entry point of the failover pair. All log sources for logs collected by the failover appliances must use the public IP address as their target IP.

The public IP address is specified during failover configuration. At any instant, only one appliance owns the public IP address and acts as a primary node for collecting and processing logs. The other node is the exact replica, in real time, of the primary node and acts as a standby. In the event of a primary node failure, the public IP address defers to the standby to guarantee availability and minimal loss of logs.

Example: Failover Solution for a LogLogic LX Appliance