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Configuration

Configuring the High Availability Feature for X.25 over LLC2

Chapter 382

NOTE The routing table of the router connected to the host system must be

updated with the unique MAC address identified by the user. If the XOL

router supports the Hunt Group facility for XOL HA, the unique MAC

address may not be required to achieve the HA functionality for XOL

interface. For more information on Hunt Group facility, see “Configuring

the High Availability Feature for X.25 over LLC2” on page 81.

WARNING When several highly available XOL interfaces are configured on

a given LAN card, failover of all the highly available XOL

interfaces to the standby LAN card occurs immediately after one

XOL interface fails. This is because the same unique MAC

address is used by all XOL interfaces on the given LAN card.

Local Failover

NOTE You need not install ServiceGuard for Local failover.

For local failover to happen, you must define a standby LAN card in the

X.25 configuration file. The primary X.25 configuration file is used to

configure the XOL interface on the standby LAN card after the local

failover. As a result, the standby LAN card inherits all the configuration

parameters from the primary interface, including the XOL logical port-id

(also called box-id). The XOL interface starts first on the primary LAN

card. If this XOL interface fails, an attempt is made to restart it on the

standby LAN card. If the XOL interface fails on the standby LAN card,

an attempt is made to failover back to the primary LAN card. This

failover succeeds only if the primary LAN card is back UP and

operational. Otherwise, the XOL interface goes down.

For more information on how to use this local failover functionality, see

“Configuring XOL HA for Local Failover Without ServiceGuard” on

page 83.

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HP CommonIO Products Manual de usuario Pagina 82