Enables LDP on an interface.
MPLS interface configuration mode
For an LDP session between routers, you must configure LDP on an interface to allow the device to advertise its loopback interface to the peers.
To use LDP, configure a loopback address with a 32-bit mask on the LSR. The first loopback address configured on the device is used in its LDP identifier. When the loopback address used in the LDP identifier is removed, all LDP functions on the LSR are shut down. LDP sessions between the LSR and its peers are terminated, and LDP-created tunnels are removed. When other loopback interfaces are configured on the device, the lowest-numbered loopback address is used as a new LDP identifier. LDP sessions and tunnels are set up using this new LDP identifier.
Configure LDP on the same set of interfaces that IGP routing protocols such as OSPF and IS-IS are enabled.
Use the no form of the command to disable LDP on the interface.
MPLS is supported only on devices based on the DNX chipset family. For a list of such devices, see "Supported Hardware".
The following example configures LDP on an interface.
device# configure terminal device(config)# router mpls device(config-router-mpls)# mpls-interface ethernet 0/2 device(config-router-mpls-interface-0/2)# ldp-enable