Technical data

BLADE OS 5.1 Application Guide
BMD00136, November 2009 Chapter 14: High Availability
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When the switch determines that ports in the trigger are in STP Forwarding state, then it
automatically enables the appropriate control ports. The switch fails back to normal operation.
Configuration Guidelines
This section provides important information about configuring Layer 2 Failover.
 Any specific failover trigger can monitor ports only, static trunks only, or LACP trunks only.
The different types cannot be combined in the same trigger.
 A maximum of 52 LACP keys can be added per trigger.
 Port membership for different triggers should not overlap. Any specific port should be a
member of only one trigger.
Configuring Layer 2 Failover
Use the following procedure to configure basic Layer 2 Failover.
1. Specify the links to monitor.
2. Specify the links to disable when the failover limit is reached.
3. Configure general Failover parameters.
>> # failover trigger 1 mmon monitor member 1-5
>> # failover trigger 1 mmon control member 6-10
>> # failover enable
>> # failover trigger 1 enable
>> # failover trigger 1 limit 2