mpls te suppress-flapping disable

Function

The mpls te suppress-flapping disable command disables TE LSP flapping suppression.

The undo mpls te suppress-flapping disable command enables TE LSP flapping suppression.

By default, this function is enabled.

Format

mpls te suppress-flapping disable

undo mpls te suppress-flapping disable

Parameters

None

Views

MPLS view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
mpls-te	write

Usage Guidelines

Usage Scenario

After a TE LSP goes Up, it goes Down due to a protocol or interface failure. A device attempts to reestablish the TE LSP, which maximizes the TE LSP protocol hard convergence. If the TE LSP goes Up and immediately Down due to interface flapping or an interworking protocol issue, the TE LSP alternates between Up and Down, causing high CPU usage. To enable flapping suppression can resolve such a problem.

During the process of establishing the TE LSP, if the TE LSP fails to be established, the TEM component starts an Exponential backoff timer and periodically attempts to reestablish the TE LSP. After a specified number of failed attempts, the interval between attempts is prolonged so that the TE LSP reestablishment is slowed, which reduces protocol costs and prevents high CU usage. The process is called flapping suppression. To disable TE LSP flapping suppression, run the mpls te suppress-flapping disable command.

Example

# Disable TE LSP flapping suppression.

<HUAWEI> system-view
[~HUAWEI] mpls
[*HUAWEI-mpls] mpls te
[*HUAWEI-mpls] mpls te suppress-flapping disable