Configuration

 

Configuring the High Availability Feature for X.25 over LLC2

 

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 89.

 

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.

Chapter 3

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HP General IO Connectivity manual Configuring XOL HA for Remote Failover Using Service Guard