tiebreaker preference (OSPFv3 FRR view)

Function

The tiebreaker command sets the solution of selecting a backup path for OSPFv3 IP FRR.

The undo tiebreaker command restores the default solution of selecting a backup path for OSPFv3 IP FRR.

By default, the solution of selecting a backup path for OSPFv3 IP FRR is node-protection path first.

Format

tiebreaker { node-protecting | lowest-cost } preference value

undo tiebreaker { node-protecting | lowest-cost } [ preference value ]

Parameters

Parameter	Description	Value
node-protecting	Sets the solution of selecting a backup path for IP FRR to node-protection path first.	-
lowest-cost	Sets the solution of selecting a backup path for IP FRR to smallest-cost path first.	-
preference value	Specifies a priority for the solution. The larger the value, the higher the priority.	The value is an integer ranging from 1 to 255. By default, the priority of the node-protection path first solution is 40, and the priority of the smallest-cost path first solution is 20.

Parameter

Description

Value

node-protecting

Sets the solution of selecting a backup path for IP FRR to node-protection path first.

lowest-cost

Sets the solution of selecting a backup path for IP FRR to smallest-cost path first.

preference value

Specifies a priority for the solution. The larger the value, the higher the priority.

The value is an integer ranging from 1 to 255.

By default, the priority of the node-protection path first solution is 40, and the priority of the smallest-cost path first solution is 20.

Views

OSPFv3 FRR view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
ospf	write

Usage Guidelines

Usage Scenario

By default, the solution of selecting a backup path for OSPFv3 IP FRR is node-protection path first. In some cases, the solution needs to be changed to smallest-cost path first because of data forwarding capacity or link cost consideration. To change the solution of selecting a backup path for OSPFv3 IP FRR to smallest-cost path first, run the tiebreaker command.

Prerequisites

The OSPFv3 FRR view has been displayed using the frr command, and OSPFv3 IP FRR has been enabled using the loop-free-alternate command.

Example

# Set the solution of selecting a backup path for OSPFv3 IP FRR to smallest-cost path first.

<HUAWEI> system-view
[~HUAWEI] ospfv3 1
[*HUAWEI-ospfv3-1] frr
[*HUAWEI-ospfv3-1-frr] loop-free-alternate
[*HUAWEI-ospfv3-1-frr] tiebreaker lowest-cost preference 255