mpls te tie-breaking (Tunnel interface view)

Function

The mpls te tie-breaking command configures a rule for selecting a route from multiple equal-cost routes to the destination.

The undo mpls te tie-breaking command restores the default tie-breaker.

By default, the random routing principle is used.

Format

mpls te tie-breaking { least-fill | most-fill | random }

undo mpls te tie-breaking

Parameters

Parameter	Description	Value
least-fill	The path with maximum available bandwidth ratio is preferred.	-
most-fill	The path with minimum available bandwidth ratio is preferred.	-
random	Path selection is random.	-

Parameter

Description

Value

least-fill

The path with maximum available bandwidth ratio is preferred.

most-fill

The path with minimum available bandwidth ratio is preferred.

random

Path selection is random.

Views

Tunnel interface view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
mpls-te	write

Usage Guidelines

Usage Scenario

A rule for selecting a route configured in the local tunnel interface view is preferred for a tunnel. If no rule is configured in the tunnel interface view, a rule configured in the MPLS view is used.

A route is selected based on the ratio of the used available bandwidth to the maximum reservable bandwidth. If least-fill is configured, the route with the lowest ratio is selected; if most-fill is configured, the route with the highest ratio is selected.

The Most-fill and Least-fill modes are only effective when the difference in bandwidth usage between the two links exceeds 10%, such as 50% of link A bandwidth utilization and 45% of link B bandwidth utilization. The value is 5%. At this time, the Most-fill and Least-fill modes do not take effect, and the Random mode is still used.

Example

# Select a path with the lowest ratio of the used bandwidth to the maximum reservable bandwidth on the local tunnel interface.

<HUAWEI> system-view
[~HUAWEI] mpls
[*HUAWEI-mpls] mpls te
[*HUAWEI-mpls] quit
[*HUAWEI] interface tunnel 1
[*HUAWEI-Tunnel1] tunnel-protocol mpls te
[*HUAWEI-Tunnel1] mpls te tie-breaking least-fill