User's Manual

Configuration
Configuring the High Availability Feature for X.25 over LLC2
Chapter 386
x25init -c <XOL_config_file> -L <llc2_conf_def>
Remote Failover
NOTE Remote failover, with or without local failover, requires the installation
of the ServiceGuard product on the system. For more information on HP
MC/ServiceGuard product, see Managing MC/ServiceGuard document.
In the ServiceGuard cluster, the remote failover works between LAN
cards on different nodes. Each LAN card has an XOL interface which is
defined by the same configuration filename used in the SG package. The
x25ifstate command monitors the XOL interface status. When the
XOL interface fails, the x25ifstate command exits. HP MC/Service
Guard detects that the monitor service belonging to the package has
exited and stops the package. HP MC/Service Guard then starts the
same package on the standby node of the ServiceGuard cluster, which
starts the XOL interface on the LAN card on the standby node.
For more information on using the remote failover functionality with
Service Guard, see “Configuring XOL HA for Remote Failover Using
Service Guard (SG)” on page 86.
Configuring XOL HA for Remote Failover Using Service Guard
(SG)
In Figure 3-15, primary system A and standby system B are part of the
SG cluster and provide remote failover of an XOL interface with X.25
address 1111. The unique, user supplied MAC address is uMAC for that
LAN segment. It is initially assigned to the card lan0 on primary system
A.