ExpressCluster X 2.0 for Windows Reference Guide - Nec

Understanding floating IP resources
Dependencies of floating IP resources
Floating IP
By default, this function does not depend on any group resource type.
Section II Resource details
Understanding floating IP resources
Client applications can use floating IP addresses to access cluster servers. By using floating IP
addresses, clients do not need to be aware of switching access destination server when a failover
occurs or moving a group migration.
Floating IP addresses can be used on the same LAN and over the remote LAN.
Server 1 failed
Floating IP
server1 server2
Access to floating
IP address
Client
Address assignment
An IP address to assign for floating IP address needs to meet the condition described below:
● Available host address which is in the same network address as the LAN that the cluster server
belongs
Allocate as many IP addresses that meet the above condition as required (generally as many as
failover groups). These IP addresses are the same as general host addresses, therefore, you can
assign global IP addresses such as Internet.
You can also allocate IPv6addresses to floating IP addresses.
Failover
server1 server2
Client
Floating IP
Access to floating
IP address
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