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Command Reference

CloudEngine 8800, 7800, 6800, and 5800 V200R002C50

This document describes all the configuration commands of the device, including the command function, syntax, parameters, views, default level, usage guidelines, examples, and related commands.
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tiebreaker (OSPFv3)

tiebreaker (OSPFv3)

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 preference

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

Parameters

Parameter Description Value
node-protecting

Sets the solution of selecting a backup path for OSPFv3 IP FRR to node-protection path first.

-
lowest-cost

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

-
preference preference

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

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. By default, the bigger-cost path is selected as the backup path. To change the solution of selecting a backup path for OSPFv3 IP FRR to smallest-cost path first, run the tiebreaker command. After the command is run, smallest-cost path is selected as the backup path.

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
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Updated: 2019-03-21

Document ID: EDOC1000166501

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