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Supported MPLS Standards

The JUNOS software substantially supports the following MPLS standards:

RFC 2547, BGP/MPLS VPNs
RFC 2702, Requirements for Traffic Engineering Over MPLS
RFC 2858, Multiprotocol Extensions for BGP-4
RFC 3031, Multiprotocol Label Switching Architecture
RFC 3032, MPLS Label Stack Encoding
RFC 3063, MPLS Loop Prevention Mechanism
RFC 3140, Per Hop Behavior Identification Codes
RFC 3208, PGM Reliable Transport Protocol Specification (only the network element)
RFC 3270, Multi-Protocol Label Switching (MPLS) Support of Differentiated Services (E-LSPs only)
RFC 3443, Time To Live (TTL) Processing in Multi-Protocol Label Switching (MPLS) Networks
RFC 3469, Framework for Multi-Protocol Label Switching (MPLS)-based Recovery
RFC 3564, Requirements for Support of Differentiated Services-aware MPLS Traffic Engineering
RFC 4124, Protocol Extensions for Support of Diffserv-aware MPLS Traffic Engineering
RFC 4125, Maximum Allocation Bandwidth Constraints Model for Diffserv-aware MPLS Traffic Engineering
RFC 4127, Russian Dolls Bandwidth Constraints Model for Diffserv-aware MPLS Traffic Engineering
RFC 4379, Detecting Multi-Protocol Label Switched (MPLS) Data Plane Failures. (The JUNOS software supports the traceroute functionality, but only on transit routers.)
Internet draft draft-ietf-bfd-mpls-02.txt, BFD for MPLS LSPs
Internet draft draft-ietf-l3vpn-rfc2547bis-04.txt, BGP/MPLS IP VPNs
Internet draft draft-ietf-mpls-icmp-01.txt, ICMP Extensions for MultiProtocol [sic] Label Switching
Internet draft draft-ietf-mpls-label-encaps-07.txt, MPLS Label Stack Encoding
Internet draft draft-ietf-mpls-rsvp-lsp-fastreroute-03.txt, Fast Reroute Extensions to RSVP-TE for LSP Tunnels (except for node protection in facility backup)
Internet draft draft-ietf-mpls-soft-preemption-00.txt, MPLS Traffic Engineering Soft preemption
Internet draft draft-ietf-ppvpn-rfc2547bis-03.txt, BGP/MPLS VPNs
Internet draft draft-martini-l2circuit-encap-mpls-07.txt, Encapsulation Methods for Transport of Layer 2 Frames Over IP and MPLS Networks
The JUNOS software differs from the Internet draft in the following ways:
- A packet with a sequence number of 0 is treated as out of sequence.
- Any packet which does not have the next incremental sequence number is considered out of sequence.
- When out-of-sequence packets arrive, the expected sequence number for the neighbor is set to the sequence number in the Layer 2 circuit control word.
Internet draft draft-martini-l2circuit-trans-mpls-14.txt, Transport of Layer 2 Frames Over MPLS
Internet draft draft-raggarwa-mpls-p2mp-te-02.txt, Establishing Point to Multipoint MPLS TE LSPs (except for no-adjacent signaling for branch LSPs, make-before-break and fast reroute, and LSP hierarchy using point-to-point LSPs)

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