This section explains the operation of a configuration which increases reliability of networks with the shared-IP zone configuration.
Normally, non-global zones with the shared-IP configuration of the Solaris Zones communicate with each other or the other systems by using a logical interface for a non-global zone allocated to the physical interface. If the physical interface fails, or part of the transmission route fails, communication will be disrupted.
Figure C.3 Interface structure without redundant line control
The above example shows that the Application A and B cannot communicate with each other when the transmission route fails.
The redundant line control function ensures operational continuity in the event of a transmission route failure.
You can use the following modes to increase reliability for networks of non-global zones with the shared-IP zone configuration:
Fast switching mode
NIC switching mode
GS/SURE linkage
The following example shows how interfaces can be structured in Fast switching mode or GS/SURE linkage mode.
Figure C.4 Network reliability in Fast switching mode or GS/SURE linkage mode
Even if a transmission route fails on either of the physical interfaces, the applications will be switched over to the logical virtual interface on the standby node through redundant line control, so operational continuity is never disrupted.
The following example shows how interfaces can be structured in NIC switching mode.
Figure C.5 Network reliability in NIC switching mode
Even if a transmission route fails on the primary physical interface, the applications will be switched over to the secondary physical interface through redundant line control, so operational continuity is never disrupted.
