Alcatel-Lucent 6850-48 Network Guide

Configuring MPLS

Configuring MPLS

page 10-20

OmniSwitch AOS Release 6 Network Configuration Guide

By default, the MPLS instance is created and enabled for the switch when the MPLS software license is 
downloaded and installed on the switch. As a result, it is not necessary to load or activate MPLS to start 
using the feature. 

To change the MPLS status for the switch, use the 

 command. For 

example, the following command disables the MPLS instance for the switch:

-> configure router mpls shutdown

The following command enables the MPLS instance for the switch:

-> configure router mpls no shutdown

By default, the LDP instance is created and enabled for the switch when the MPLS software license is 
downloaded and installed on the switch. As a result, it is not necessary to load or activate LDP to start 
configuring LDP components.

To change the LDP status for the switch, use the 

 command. For exam-

ple, the following command disables the LDP instance for the switch:

-> configure router ldp shutdown

The following command enables the LDP instance for the switch:

-> configure router ldp no shutdown

Using LDP to create LSPs (tunnels) is supported with this implementation of MPLS. The LDP interacts 
with the underlying routing protocol to obtain routing information that is required to set up LSPs. Services, 
such as VPLS, use LDP to initiate and manage tunnels from an ingress router (origination point) through 
transit routers to an egress router (endpoint). 

By default, the LDP instance is enabled for the switch when the MPLS software license is downloaded and 
applied. This process also enables global default parameter values for LDP interfaces and targeted LDP 
(tLDP) sessions. 

Configuring LDP involves creating LDP interfaces on each router that will participate in the LSP and 
modifying LDP parameter values on the global level or on a per-interface basis.

To create an LDP interface, use the 

example, the following command creates an LDP interface on the previously-configured “vlan-40” IP 
interface:

-> configure router ldp interface-parameters interface vlan-40

The LDP interface is enabled by default, along with global interface parameters that are applied when an 
interface is configured (see 

 for more information).