entropy-label ttl-mode

Function

The entropy-label ttl-mode command sets a mode of handling the TTL field in MPLS packets with label 7.

The undo entropy-label ttl-mode command is used to restore the default configuration.

By default, the uniform mode is used.

Format

entropy-label ttl-mode { uniform | pipe }

undo entropy-label ttl-mode

Parameters

Parameter	Description	Value
uniform	Indicates the uniform mode of handling the TTL field in MPLS packets with label 7.	-
pipe	Indicates the pipe mode of handling the TTL field in MPLS packets with label 7.	-

Parameter

Description

Value

uniform

Indicates the uniform mode of handling the TTL field in MPLS packets with label 7.

pipe

Indicates the pipe mode of handling the TTL field in MPLS packets with label 7.

Views

MPLS view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
forwarding	write

Usage Guidelines

Usage Scenario

To set a mode of handling the TTL field in MPLS packets with label 7, run the entropy-label ttl-mode command. Either of the following modes can be set (take effect only on the egress PE):

uniform: The egress PE reduces the MPLS TTL by one, compares it with the IP TTL, and propagates the smaller value to the IP TTL field before forwarding the packet.
pipe: The egress PE reduces the IP TTL by one, without propagating the MPLS TTL to the IP TTL.

Precautions

The commands take effect only on the egress PE.

Example

# Set a mode of handling the TTL field in MPLS packets with label 7 to uniform.

<HUAWEI> system-view
[~HUAWEI] mpls
[*HUAWEI-mpls] entropy-label ttl-mode uniform