propagate mapping unknown-tlv disable

Function

The propagate mapping unknown-tlv disable command disables a device from forwarding unknown TLV information.

The undo propagate mapping unknown-tlv disable command enables a device to forward unknown TLV information.

By default, a device is enabled to forward unknown TLV information

Format

propagate mapping unknown-tlv disable

undo propagate mapping unknown-tlv disable

Parameters

None

Views

MPLS-LDP view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
mpls-ldp	write

Usage Guidelines

Usage Scenario

A device by default forwards the overlapping part of unknown TLVs of established downstream mappings to upstream devices. Consequently, upon receipt of such TLV information, an upstream device cannot handle the unknown TLV information, which causes problems. To prevent the problems, run the propagate mapping unknown-tlv disable command on the local device to disable this device from forwarding unknown TLV information to the upstream device.

Example

# Disable a local device from forwarding unknown TLV information.

<HUAWEI> system-view
[~HUAWEI] mpls
[*HUAWEI-mpls] quit
[*HUAWEI] mpls ldp
[*HUAWEI-mpls-ldp] propagate mapping unknown-tlv disable