Configuring Multiple Instances of LDP

LDP is a protocol used to distribute labels in an MPLS-enabled network.

LDP instances are used to distribute labels from a provider edge (PE) router to a customer edge (CE) router. LDP instances in a VPN are useful in carrier-of-carrier networks, where data is transmitted between two or more telecommunications carrier sites across a core provider network. Each carrier may want to restrict Internet routes strictly to the PE routers.

An advantage of using LDP instances within a VPN is that full-mesh IBGP is not required between the PE and CE routers. A router ID is required to configure an instance of LDP.

To configure multiple instances of LDP, include the following statements:

You can include the statements at the following hierarchy levels:

• [edit routing-instances routing-instance-name protocols]
• [edit logical-systems logical-system-name routing-instances routing-instance-name protocols]

For more information about configuring LDP, see the Junos MPLS Applications Configuration Guide. For more information about configuring LDP over VPNs, see the Junos VPNs Configuration Guide.