Command:

backup load


Mode:

Router(config-if)#


Syntax:

backup load {enable-threshold | never }{disable-load | never}

no backup load {enable-threshold | never }{disable-load | never}

 

Syntax Description:

 

enable-threshold 

Percentage of the primary line's available bandwidth that the traffic load must exceed to enable dial backup

disable-load 

Percentage of the primary line's available bandwidth that the traffic load must be less than to disable dial backup

never

The secondary line will never be activated due to traffic load.

 


Command Description:

To set a traffic load threshold for dial backup service, use the backup load interface configuration command. Use the no form of this command to return to the default value. The default has no predefined threshold.

When the transmitted or received load on the primary line is greater than the value assigned to the enable-threshold argument, the secondary line is enabled.

The secondary line is disabled when one of the following conditions occurs:

If the never keyword is used instead of an enable-threshold value, the secondary line is never activated because of traffic load. If the never keyword is used instead of a disable-load argument, the secondary line is never activated because of traffic load.


Example:

The following example sets the traffic load threshold to 60 percent of the primary line, serial 0. When that load is exceeded, the secondary line, serial 1, is activated, and will not be deactivated until the combined load is less than 5 percent of the primary bandwidth.

Router(config)#interface serial 0 
Router(config-if)#backup load 60 5 
Router(config-if)#backup interface serial 1


Misconceptions:

 

None


Related Commands:

 

backup interface

 

 

 


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