Sun Cluster 3.0-3.1 Hardware Administration Manual for Solaris OS

Configuring VLANs as Private Interconnect Networks

Sun Cluster software supports the use of private interconnect networks over switch-based virtual local area networks (VLAN). In a switch-based VLAN environment, Sun Cluster software enables multiple clusters and nonclustered systems to share Ethernet transport junction (switch) in two different configurations.

The implementation of switch-based VLAN environments is vendor-specific. Because each switch manufacturer implements VLAN differently, the following guidelines address Sun Cluster software requirements about how to configure VLANs with cluster interconnects.

The first VLAN configuration enables nodes from multiple clusters to send interconnect traffic across one pair of Ethernet transport junctions. Sun Cluster software requires the use of at least two transport junctions to eliminate a single point of failure. The following figure is an example of the first VLAN configuration in a two-node cluster. VLAN configurations are not limited to two-node clusters.

Figure 3–7 First VLAN Configuration

 Illustration: The preceding context describes the graphic.

The second VLAN configuration also uses the same transport junctions for the interconnect traffic of multiple clusters. However, the second VLAN configuration requires two pairs of transport junctions that are connected by links. This configuration enables VLANs to be supported in a campus cluster configuration with the same restrictions as other campus cluster configurations. The following figure illustrates the second VLAN configuration.

Figure 3–8 Second VLAN Configuration

 Illustration: The preceding context describes the graphic.