filter-fec-out

Configures LDP outbound FEC filtering to filter outbound label bindings on a MPLS router.

Syntax

filter-fec-out prefix-list-name
no filter-fec-out prefix-list-name

Command Default

By default, LDP distributes all FECs that are learned locally or from LDP neighbors to all other LDP neighbors.

Parameters

prefix-list-name
Specifies the prefix-list name.

Modes

MPLS LDP configuration mode

Usage Guidelines

Use the no form of this command to remove the FEC filtering configuration.

LDP outbound FEC filtering gives you the ability to control which FECs can be advertised and to which LDP neighbors. It also reduces the number of labels distributed to neighbors and the number of messages exchanged with peers. Through this filtering, LDP scalability and convergence, security, and performance are improved.

MPLS is supported on the Extreme 8820, SLX 9740, SLX 9640, and SLX 9540 devices only.

Examples

The following example configures the LDP outbound-FEC filter.

device# configure terminal
device(config)# ip prefix-list list-out deny 10.40.40.0/24
device(config)# ip prefix-list list-out permit 0.0.0.0/0 ge 32
device(config)# router mpls
device(config-router-mpls)# ldp
device(config-router-mpls-ldp)# filter-fec-out list-out