Managing HP Serviceguard for Linux, Tenth Edition, September 2012

Network Configuration Restrictions
Serviceguard supports IPv6 for data and heartbeat IP.
The restrictions on support for IPv6 in Serviceguard for Linux are:
• Auto-configured IPv6 addresses are not supported in Serviceguard. as
HEARTBEAT_IP or STATIONARY_IP addresses. IPv6 addresses that are part of a
Serviceguard cluster configuration must not be auto-configured through router
advertisements, for example. Instead, they must be manually configured in
/etc/sysconfig/network-scripts/ifcfg-<eth-ID> on Red Hat or
/etc/sysconfig/network/ifcfg-<eth-ID> on SUSE. See “Configuring IPv6
on Linux” (page 332) for instructions and examples.
• Link-local IP addresses are not supported, as package IPs, HEARTBEAT_IPs, or
STATIONARY_IPs. Depending on the requirements, the package IP address could
be of type site-local or global.
• Serviceguard supports only one IPv6 address belonging to each scope type (site-local
and global) on each network interface (that is, restricted multi-netting). This means
that a maximum of two IPv6 HEARTBEAT_IP or STATIONARY_IP addresses can
be listed in the cluster configuration file for a NETWORK_INTERFACE:, one being
the site-local IPv6 address, and the other being the global IPv6 address.
NOTE: This restriction applies to cluster configuration, not package configuration:
it does not affect the number of IPv6 relocatable addresses of the same scope type
(site-local or global) that a package can use on an interface.
• Bonding is supported for IPv6 addresses, but only in active-backup mode.
• Serviceguard supports IPv6 only on the Ethernet networks, including 10BT, 100BT,
and Gigabit Ethernet.
IMPORTANT: For important information, see also “Cross-Subnet Configurations”
(page 27), the description of the HOSTNAME_ADDRESS_FAMILY, QS_HOST and QS_ADDR
parameters under Cluster Configuration Parameters (page 103), “Configuring Name
Resolution” (page 159), and the Release Notes for your version of Serviceguard for Linux.
For special instructions that may apply to using IPv6 addresses to connect your version
of Serviceguard for Linux and the Quorum Server, see “Configuring Serviceguard to Use
the Quorum Server” in the latest version HP Serviceguard Quorum Server Version A.04.00
Release Notes, at http://www.docs.hp.com -> High Availability ->
Quorum Server.
Configuring IPv6 on Linux
Red Hat Enterprise Linux and SUSE Linux Enterprise Server already have the proper IPv6
tools installed, including the /sbin/ip command. This section explains how to configure
IPv6 stationary IP addresses on these systems.
332 IPv6 Network Support