HP Serviceguard Version A.11.18 Release Notes, September 2008

• Because Veritas Cluster File System from Symantec (CFS) requires link-level traffic
communication (LLT) among the nodes, Serviceguard cannot be configured in
cross-subnet configurations with CFS alone.
But CFS is supported in specific cross-subnet configurations with Serviceguard
and HP add-on products such as Serviceguard Extension for Oracle RAC
(SGeRAC); see the documentation listed below.
• Each package subnet must be configured with a standby interface on the local
bridged net. The standby interface can be shared between subnets.
• Deploying applications in this environment requires careful consideration; see
“Implications for Application Deployment” in Chapter 4 of the 15th edition of
Managing Serviceguard.
• cmrunnode will fail if the “hostname LAN” is down on the node in question.
(“Hostname LAN” refers to the public LAN on which the IP address that the node’s
hostname resolves to is configured).
• If a monitored_subnet is configured for PARTIAL monitored_subnet_access in a
package’s configuration file, it must be configured on at least one of the nodes on
the node_name list for that package. Conversely, if all of the subnets that are being
monitored for this package are configured for PARTIAL access, each node on the
node_name list must have at least one of these subnets configured.
— As in other configurations, a package will not start on a node unless the subnets
configured on that node, and specified in the package configuration file as
monitored subnets, are up.
• You cannot use Serviceguard Manager to configure a cross-subnet cluster or
package.
For More Information
For more information on the details of configuring the cluster and packages in a
cross-subnet context, see the following sections in the 15th edition of Managing
Serviceguard, at http://docs.hp.com -> High Availability ->
Serviceguard: “Obtaining Cross-Subnet Information” in Chapter 5, “About
Cross-Subnet Failover” in Chapter 4, and (for legacy packages only) “Configuring
Cross-Subnet Failover” in Chapter 7.
42 Serviceguard Version A.11.18 Release Notes