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Layer 2 VPN

  • Control word on the MPC-10E line card (MX Series)—Starting in Junos OS Release 21.3R1, MPC-10E line cards support the insertion of a control word between the label stack and the Layer 2 payload for VPLS services. You can use the control word to prevent provider edge routers from incorrectly identifying a VPLS payload as an IPv4 or IPv6 payload. You also prevent out-of-order packet delivery in a VPLS network that is configured to load-balance VPLS traffic across multiple paths. To enable the control word, include the control-word statement at the [edit routing-instances routing-instance-name protocols vpls] hierarchy level.

    [See Control Word for BGP VPLS Overview.]