Multiprotocol Label Switching (MPLS) provides a framework for controlling traffic patterns across a network. The MPLS framework allows Services Routers to pass traffic through transit networks on paths that are independent of the individual routing protocols enabled throughout the network.
The MPLS framework supports traffic engineering and the creation of virtual private networks (VPNs). Traffic is engineered (controlled) primarily by the use of signaling protocols to establish label-switched paths (LSPs). VPN support includes Layer 2 and Layer 3 VPNs and Layer 2 circuits.
This chapter contains the following topics. For more information, see the JUNOS Routing Protocols Configuration Guide, JUNOS MPLS Applications Configuration Guide, and JUNOS VPNs Configuration Guide.