Managing Serviceguard A.11.20, March 2013

slots, and the bus address for each adapter; you can update the details as you do the cluster
configuration (described in Chapter 5).
SPU Information
SPU information includes the basic characteristics of the systems you are using in the cluster.
Different models of computers can be mixed in the same cluster. This configuration model also
applies to HP Integrity servers. HP-UX workstations are not supported for Serviceguard.
Collect information for the following items; see the Hardware Configuration Worksheet (page 102)
for an example:
Server Number The series number; for example, rp8400 or rx8620-32.
Host Name The name to be used on the system as the host name.
Memory Capacity The memory in MB.
Number of I/O slots The number of slots.
Network Information
Serviceguard monitors LAN interfaces.
NOTE: Serviceguard supports communication across routers between nodes in the same cluster;
for more information, see the documents listed under “Cross-Subnet Configurations” (page 29).
Serviceguard communication relies on the exchange of DLPI (Data Link Provider Interface) traffic
(for nodes on the same subnet) and UDP/TCP (User Datagram Protocol/Transmission Control
Protocol) and ICMP traffic between cluster nodes.
LAN Information
While a minimum of one LAN interface per subnet is required, at least two LAN interfaces, one
primary and one or more standby, are needed to eliminate single points of network failure.
NOTE: In a cross-subnet configuration, in which the cluster spans subnets joined by a router, a
standby for each subnet is required. See “Cross-Subnet Configurations” (page 29) for more
information.
HP recommends that you configure heartbeats on all subnets, including those to be used for client
data.
Collect the following information for each LAN interface; see the Hardware Configuration Worksheet
(page 102) for an example:
Subnet Name The IP address mask for the subnet. Note that, except in
cross-subnet configurations (page 29), heartbeat IP
addresses must be on the same subnet on each node.
Interface Name The name of the NIC as used by this node to access the
subnet. This name is shown by lanscan after you install
the card.
IP Address This node’s host IP address(es), to be used on this interface.
If the interface is a standby and does not have an IP address,
enter 'Standby.'
An IPv4 address is a string of 4 digits separated with
decimals, in this form:
nnn.nnn.nnn.nnn
An IPV6 address is a string of 8 hexadecimal values
separated with colons, in this form:
xxx:xxx:xxx:xxx:xxx:xxx:xxx:xxx.
Hardware Planning 99