Managing HP Serviceguard for Linux, Seventh Edition, July 2007

Planning and Documenting an HA Cluster
Hardware Planning
Chapter 4 93
LAN Information
While a minimum of one LAN interface per subnet is required, at least
two LAN interfaces are needed to eliminate single points of network
failure.
It is recommended that you configure heartbeats on all subnets,
including those to be used for client data. On the worksheet, enter the
following for each LAN interface:
Subnet Name
Enter the IP address for the subnet. Note that
heartbeat IP addresses must be on the same subnet on
each node.
Interface Name
Enter the name of the LAN card as used by this node to
access the subnet. This name is shown by ifconfig
after you install the card.
IP Address
Enter this node’s host IP address intended to be used
on this interface.
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
For more details of IPv6 address format, see the
Appendix E, “IPv6 Network Support,” on page 357.
Kind of LAN Traffic
Identify the purpose of the subnet. Valid types include
the following:
• Heartbeat
• Client Traffic
Label the list to show the subnets that belong to a bridged net.