The apply preferred-value command sets the action for changing the preferred value of BGP routes in a routing policy.
The undo apply preferred-value command restores the default setting.
By default, the action for changing the preferred value of BGP routes is not set in a routing policy.
Product |
Support |
|---|---|
S5720-EI, S5720-HI, S5720I-SI, S5720S-SI, S5720-SI, S5735-S, S5735S-S, S5735-S-I, S5730-HI, S5730S-EI, S5730-SI, S5731-H, S5731-S, S5731S-H, S5731S-S, S5732-H, S6720-EI, S6720-HI, S6720S-EI, S6720S-SI, S6720-SI, S6730-H, S6730S-H, S6730-S, and S6730S-S |
Supported. |
S2720-EI, S5720-LI, S5735-L, S5735S-L, S5735S-L-M, S5720S-LI, S6720-LI, and S6720S-LI |
Not supported. |
| Parameter | Description | Value |
|---|---|---|
| preferred-value | Specifies the preferred value of BGP routes. In route selection, the BGP route with the largest preferred value is preferred. | The value is an integer ranging from 0 to 65535. |
Usage Scenario
To change the preferred value of BGP routes for selecting the optimal route, you can apply a routing policy containing the apply preferred-value command.
Prerequisites
The apply preferred-value command can be used only after the route-policy command is used.
Precautions
When a routing policy takes effect, it affects BGP route selection.
The preferred value of a route indicates the weight of the route in BGP routing. The preferred value is not a standard RFC-defined attribute and is valid only on local devices. The preferred value is inapplicable to export policies of BGP.