mpls te bit-error-detection threshold

Format

mpls te bit-error-detection threshold switch switch-coe switch-pow resume resume-coe resume-pow

undo mpls te bit-error-detection threshold

Parameters

Parameter	Description	Value
switch-pow	Specifies the threshold for bit-error-triggered RSVP-TE tunnel protection switching.	The value is an integer ranging from 1 to 7.
resume resume-coe	Specifies the threshold for bit-error-triggered RSVP-TE tunnel revertive switching. The formula for calculating the threshold is as follows: Revertive switching threshold = (resume-coe) x 10^-resume-pow. The revertive switching threshold cannot be greater than the protection switching threshold.	The value is an integer ranging from 1 to 9.
resume-pow	Specifies the threshold for bit-error-triggered RSVP-TE tunnel revertive switching.	The value is an integer ranging from 1 to 7.
switch switch-coe	Specifies the threshold for bit-error-triggered RSVP-TE tunnel protection switching. The formula for calculating the threshold is as follows: Protection switching threshold = (switch-coe) x 10^-switch-pow.	The value is an integer ranging from 1 to 9.

Views

Tunnel interface view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
mpls-te	write

Usage Guidelines

Usage Scenario

To precisely control bit-error-triggered RSVP-TE tunnel switching based on the sensitivity of services to bit errors, configure the thresholds for bit-error-triggered RSVP-TE tunnel protection switching and revertive switching on a tunnel interface.

Then, the ingress of an RSVP-TE tunnel determines the bit error status of the primary and backup CR-LSPs based on the following rules: If the BER of a CR-LSP reaches or exceeds the threshold for bit-error-triggered RSVP-TE tunnel protection switching, the CR-LSP is in the excessive BER state. After the BER of the CR-LSP falls below the threshold for bit-error-triggered RSVP-TE tunnel revertive switching, the CR-LSP changes to the normalized BER state.

Bit error refers to the deviation between a bit that is sent and the bit that is received. BER is the number of bit errors divided by the total number of transferred bits during a specified period. The BER of a CR-LSP is calculated based on the BER of each section on a CR-LSP.

Prerequisites

The mpls rsvp-te command has been run in the MPLS view to enable RSVP-TE.

Example

# Set the thresholds for bit-error-triggered RSVP-TE tunnel protection switching and revertive switching.

<HUAWEI> system-view
[~HUAWEI] mpls
[*HUAWEI-mpls] mpls te
[*HUAWEI-mpls] mpls rsvp-te
[*HUAWEI-mpls] quit
[*HUAWEI] interface Tunnel 10
[*HUAWEI-Tunnel10] tunnel-protocol mpls te
[*HUAWEI-Tunnel10] mpls te bit-error-detection threshold switch 8 2 resume 4 2