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MPLS technology is evolving, with more services being offered using MPLS connectivity. Junos OS features are also evolving to implement these services on Juniper Networks routers. The most common MPLS connectivity services include: Virtual Private LAN Service (VPLS) Layer 3 virtual...
Question What is the behavior of a virtual tunnel interface in different services routing instances? Answer If you configure a virtual tunnel (vt) interface on the egress PE router and that router is also a transit router for the point-to-multipoint LSP, the penultimate hop router sends...
Question Can a Layer 2 circuit be terminated into VPLS? Answer Yes, Junos OS Release 9.2 and later uses mesh groups to terminate pseudowire emulation (pseudowireE) into VPLS. You can terminate one pseudowireE per mesh group within the VPLS. A maximum of 16 mesh groups is supported per VPLS...
Question When one of the sites goes down in a single VPLS instance, why is there traffic loss on another site? Answer The following illustration shows a sample topology used to answer this question: A PE router has several site IDs configured within the same VPLS instance....
Question How can I prevent the receipt of hub routes on a directly-connected customer premises equipment (CPE) spoke interface in a hub provider edge router? Answer To prevent spokes from talking to each other, spoke provider edge (PE) routers export different VPN routing and forwarding ...
Question What are the Juniper Networks solutions for Metro Ethernet Forum (MEF) 6.1 Ethernet services definitions? Answer The following are the Juniper Networks solutions for Metro Ethernet Forum (MEF) 6.1 Ethernet services definitions: Ethernet private line (EPL) and Ethernet...