HP X.25/9000 User's Guide HP-UX 11i v3 (5900-1523, August 2011)

NOTE: Enabling or disabling of HA feature for XOL interface is system wide. Before enabling
or disabling the HA feature on a system, all existing XOL interfaces must be stopped. The XOL HA
feature is enabled by default on 11i v3.
1. To configure the standby device and the unique MAC address in the configuration file of the
XOL primary interface, modify the following syntax:
Standby_devicestandby LAN card name # used for local failover
XOL_floating_macaddrunique MAC address
NOTE: Local failover is automatically enabled if a “standby_device” is defined in the
configuration file. If you do not want the local failover feature for this interface, you must
de-configure the standby_device by removing or commenting the line in the configuration file.
The XOL interface inherits the configuration of the primary XOL interface during failover
because the same configuration file is used to configure the XOL interface.
Example 17 Configuring standby device and unique MAC address
If the assumptions in the XOL configuration file are the following:
• The primary LAN card is lan0
• The standby LAN card is lan1
• The MAC address is 0x0060B0A4EbE5
Then, the above parameters take the following values:
standby_device lan1
XOL_floating_macaddr 0x0060B0A4EBE5
NOTE: In the event of a failover, the XOL_floating_macaddr is moved from the Primary LAN
card to the standby LAN card. HP recommends that you use the primary and standby LAN
cards only for the XOL links configured with HA feature.
2. Configure the SG package. For information on achieving remote failover functionality, see
“XOL package definition” (page 66). For remote failover with local failover support, define
the XOL package with the following changes:
• In the Start script of the package, stop the monitor if it is running. For details, see
Example 16 (page 67).
• In the XOL package definition, use x25HAmonitor command instead of x25ifstate
as the service command, as follows:
x25HAmonitor -c /etc/x25/x25config_llc2 -L/etc/x25/llc2_conf_def
-m
NOTE: The x25HAmonitor command helps in failover of the XOL interface between the
primary and standby LAN cards (on the local system), if the LAN card (either primary or
standby) on which the XOL interface was active, fails. The x25HAmonitor exits if it is does
not start the XOL interface on the local system on either the primary or standby LAN card. The
SG does a package failover to the standby node configured in the SG cluster.
3. To start the SG package, run the following command
cmrunpkg -v package name
68 Configuration