Managing Serviceguard 11th Edition, Version A.11.16, Second Printing June 2004

Planning and Documenting an HA Cluster
Hardware Planning
Chapter 4130
attempt a failover when network traffic is not noticed
for a time. (Serviceguard calculates the time depending
on the type of LAN card.)
The configuration file specifies one of two ways to
decide when the network interface card has failed:
• INOUT - The default method will count packets sent
by polling, and declare a card down only the count
stops incrementing for both the inbound and the
outbound packets.
• INONLY_OR_INOUT - This option includes the
INOUT method. However, it will also declare a card
down if only the inbound count stops. With this
method, Serviceguard tries to validate inbound
failure reports by doing additional remote polling.
(New in Serviceguard Version A.11.16.)
The default is INOUT.
The suitability of the new option depends mainly on
your network configuration. See “Monitoring LAN
Interfaces and Detecting Failure” on page 97 for more
information. Also see “Inbound Failure Detection
Enhancement” in the White Papers section of
http://docs.hp.com/hpux/ha -> Serviceguard.
Kind of LAN Traffic
Identify the purpose of the subnet. Valid types include
the following:
• Heartbeat
• Client Traffic
•Standby
Label the list to show the subnets that belong to a bridged net.
Information from this section of the worksheet is used in creating the
subnet groupings and identifying the IP addresses in the configuration
steps for the cluster manager and package manager.