PRIMECLUSTER Global Link Services Configuration and Administration Guide: Redundant Line Control Function 4.1 (for Linux)

2.2.4 Configuring multiple logical virtual interfaces

It is possible to define several IP addresses (logical virtual interfaces) on a single virtual interface. They are called logical virtual interfaces in this document. Using this function, various IP addresses can be used for each application.

• The virtual IP address of same subnet must be assigned to the multiple virtual interfaces.

Figure 2.16 shows an example of defining two IP addresses (logical virtual interface) on a single virtual interface sha0. Configure the IP address of the same subnet to sha0, sha0:2, sha0:3.

[Figure 2.16 Logical virtual interfaces being defined]

The total number of interfaces can be created as a logical virtual interface is 63 (from 2 to 64). The logical virtual interfaces greater than 65 will be used as takeover virtual interface upon Cluster configuration.

• This function is only available for Fast switching mode.
• For NIC switching mode, if using physical interface sharing function, it can process (a process of allocating multiple IP addresses to one physical interface) equally as this function.