PRIMECLUSTER Global Link Services Configuration and Administration Guide: Redundant Line Control Function 4.1 (for Solaris(TM) Operating System)

2.1.2 RIP mode

In this mode, each of multiple NIC (Network Interface Card) is connected to a different network and all these NICs are activated.

Just as in Fast switching mode, a virtual interface is generated and a virtual network is allocated to this interface. A TCP/IP application can conduct communication with the remote system, irrespective of the physical network redundant configuration, by using an IP address (called a virtual IP address in this document) set in this virtual interface as its own local system IP address.

The lines are monitored in accordance with the standard protocol on the Internet RIP (Routing Information Protocol). RIP is controlled by routing daemons (in.routed) on the Solaris system. The version of the routing daemons supported by the Solaris system is version 1.

[Figure 2.6 Example of duplicated operation in RIP mode]

Connection type

Routers are placed between systems to enable communicate between them, with each communication route comprising a different network.

Features

Because the Internet standard routing protocol RIP is used, communication can be carried out with a variety of devices in a global network environment regardless of the models. However, because the path switching by RIP is performed slowly, switching requires some time.

Recommended application areas

This mode is appropriate, for example, for the WEB server and communications between the application server and client machines in a three-tier client-server system.

System configuration

Figure 2.7 shows a system configuration for RIP mode:

[Figure 2.7 System configuration for RIP mode]

The following explains each component and its meaning:

Physical interface

Indicates a physical interface (such as hme0 and hme1) of the duplicated NIC.

Physical IP

Indicates an IP address attached to a physical interface. This IP address is always active. IPv4 address can be used for a physical interface.

Virtual interface

Indicates a virtual interface (such as sha0) so that duplicated NIC can be seen as one NIC.

Virtual IP

Indicates a local IP address to be allocated to the virtual interface for communication with remote devices. IPv4 address can be used for a physical interface.

Monitored router 1

Indicates the IP address of a router to be monitored first when the router monitoring function is used.

Monitored router 2

Indicates the IP address of a router to be monitored after switching.

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2.1.2.1 Fault monitoring function

2.1.2.2 Switching function

2.1.2.3 Connectable remote host

2.1.2.4 Available application

2.1.2.5 Notes