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.
When you first install JUNOS software on your Services Router, MPLS is disabled by default. After you enable your router to allow MPLS traffic, the router switches to packet-based processing and operates as described in JUNOS Software Security Configuration Guide
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Caution: When MPLS is enabled on your router, all security features such as security policies, zones, NAT, ALGs, chassis clustering, screens, firewall authentication, and IPsec VPNs are unavailable. For more information on the data path for security features, see JUNOS Software Security Configuration Guide. |
This chapter contains the following topics. For more information, see the JUNOS MPLS Applications Configuration Guide, and JUNOS VPNs Configuration Guide.
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