PowerConnect B-Series FCX Configuration Guide 175
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PowerConnect B-Series FCX hitless stacking
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Syntax: show stack
Hitless stacking failover
Hitless stacking failover provides automatic failover from the Active Controller to the Standby
Controller without resetting any of the units in the stack and with sub-second or no packet loss to
hitless stacking-supported services and protocols.
For a description of the events that occur during a hitless failover, refer to “What happens during a
hitless stacking switchover or failover” on page 166.
For a description this feature’s impact to major system functions, refer to Table 37 on page 164.
For an example of hitless failover operation, refer to “Hitless stacking failover example” on
page 176.
For feature limitations and configuration notes, refer to “Configuration notes and feature
limitations” on page 165.
Enabling hitless failover
To enable hitless failover, enter the following command at the Global CONFIG level of the CLI:
PowerConnect(config)#hitless-failover enable
The command takes effect immediately. Hitless switchover is allowed, and in the event of a failover,
the standby controller will take over the active role without reloading the stack.
Syntax: [no] hitless-failover enable
Use the no form of the command to disable hitless stacking once it has been enabled.
