ecmp disable

Function

The ecmp disable command disables IS-IS ECMP FRR.

The undo ecmp disable command enables IS-IS ECMP FRR.

By default, IS-IS ECMP FRR is enabled.

Format

ecmp disable { level-1 | level-2 }

undo ecmp disable [ level-1 | level-2 ]

Parameters

Parameter	Description	Value
level-1	Disables IS-IS Level-1 ECMP FRR.	-
level-2	Disables IS-IS Level-2 ECMP FRR.	-

Parameter

Description

Value

level-1

Disables IS-IS Level-1 ECMP FRR.

level-2

Disables IS-IS Level-2 ECMP FRR.

Views

IS-IS FRR view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
isis	write

Usage Guidelines

Usage Scenario

With ECMP FRR, IS-IS pre-calculates backup paths for load balancing links based on the LSDBs on the entire network. The backup paths are stored in the forwarding table and are used for traffic protection in the case of link failures. If the network topology changes, ECMP FRR triggers calculation of new backup paths, which increases the system calculation pressure. In addition, the backup entries generated by the ECMP FRR function increase the memory usage of the system. In this case, you can run the ecmp disable command to disable the ECMP FRR function.

Precautions

The solutions of selecting a backup path for IS-IS ECMP FRR are node-and-link protection path first and smallest-cost path first in order of preference.

Example

# Disable IS-IS Level-1 ECMP FRR.

<HUAWEI> system-view
[~HUAWEI] isis 1
[*HUAWEI-isis-1] frr
[*HUAWEI-isis-1-frr] ecmp disable level-1