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About Eth0 Virtual IP Address

AE Services Server supports a virtual IP address for each of the eth0, eth1 and eth2 interfaces. To be able to administer a virtual IP address, these interfaces must have a valid IP address. AE Services continues to support HA configuration without any virtual IP addresses configured. In such a configuration, the AE Services Server client applications connect one of the two IP addresses associated with each of AE Services Servers’ client connectivity interfaces. This is dependant on the AE Services Server that is active.

GRHA is enhanced with the following changes:

  1. Registration states are replicated, as they happen over a newly created socket (TLS) connection between active and standby AE Services server.

  2. Registration states are kept in memory in the /dev/shm/resq directory.

    noteNote

    /dev/shm is a memory file system.

  3. Virtual IP addresses can be configured for public, private and OOBM interfaces.

Since GRHA performs a synchronous update for session states, it can be used in place of FRHA.

Using virtual IP addresses have significant advantages: