Using Serviceguard Extension for RAC, 10th Edition, April 2011
NOTE: A package with the CLUSTER_INTERCONNECT_SUBNET parameter is available for both
Modular and Legacy packages. A package with this parameter can be configured only when all
nodes of the cluster are running SGeRAC version A.11.18 or higher. For more information, see
the latest edition of the Managing Serviceguard Eighteenth Edition user guide at
www.hp.com/go/hpux-serviceguard-docs —> HP Serviceguard.
Figure 7 Single Network for Cluster Communications
Alternate Configuration—Fast Reconfiguration with Low Node Member Timeout
High RAC-IC traffic may interfere with SG-HB traffic and cause unnecessary member timeout if
Serviceguard cluster configuration parameter MEMBER_TIMEOUT is low. If MEMBER_TIMEOUT
cannot be increased, use of an additional network dedicated for SG-HB alone avoids unnecessary
member timeouts when RAC-IC traffic is high. This configuration is for a cluster with two or more
nodes that have high RAC-IC traffic and/or need faster failover (a low value for Serviceguard
configuration parameter MEMBER_TIMEOUT).
Cluster Communication Network Monitoring 37