MPLS Standards

The JUNOS software supports the following RFCs and Internet drafts related to MPLS:

• RFC 2547, BGP/MPLS VPNs
• RFC 2702, Requirements for Traffic Engineering Over MPLS
• RFC 2858, Multiprotocol Extensions for BGP-4
• RFC 3063, MPLS Loop Prevention Mechanism
• RFC 3031, Multiprotocol Label Switching Architecture (provides a good overview of MPLS)
• RFC 3032, MPLS Label Stack Encoding
• 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 3478, Graceful Restart Mechanism for LDP
• RFC 3564, Requirements for Support of Differentiated Services-aware MPLS Traffic Engineering
• RFC 4124, Protocol Extensions for Support of Differentiated-Service-aware MPLS Traffic Engineering
• RFC 4125, Maximum Allocation Bandwidth Constraints Model for Diff-Serv-aware MPLS Traffic Engineering
• RFC 4127, Russian Dolls Bandwidth Constraints Model for Diff-Serv-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-02.txt, ICMP Extensions for Multiprotocol Label Switching (expires February 2001)
• Internet draft draft-ietf-mpls-rsvp-lsp-fastreroute-03.txt, Fast Reroute Extensions to RSVP-TE for LSP Tunnels (except node protection in facility backup)
• Internet draft draft-ietf-mpls-icmp-01.txt, ICMP Extensions for Multiprotocol Label Switching
• Internet draft draft-ietf-mpls-label-encaps-07.txt, MPLS Label Stack Encoding
• Internet draft draft-ietf-mpls-p2mp-requirement-02.txt, Requirements for Point to Multipoint Extensions to RSVP-TE (no expiration; revised January 2004)
• Internet draft draft-ietf-mpls-soft-preemption-02.txt, MPLS Traffic Engineering Soft Preemption (no expiration; revised March 2004)
• 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 has the following exceptions:

• 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 (except non-adjacent signaling for branch LSPs, make-before-break and fast reroute, and LSP hierarchy using P2P LSPs), Establishing Point to Multipoint MPLS TE LSPs (no expiration; revised January 2004)

The following documents provide information about traffic engineering:

• RFC 2702, Requirements for Traffic Engineering Over MPLS
• RFC 4090, Fast Reroute Extensions to RSVP-TE for LSP Tunnels
• Internet draft draft-ietf-isis-traffic-04.txt, IS-IS Extensions for Traffic Engineering (expires February 2002)
• Internet draft draft-katz-yeung-ospf-traffic-06.txt, Traffic Engineering Extensions to OSPF (expires April 2002)
• Internet draft draft-ietf-mpls-rsvp-te-p2mp-01.txt, Extensions to RSVP-TE for Point to Multipoint TE LSPs (expires June 2005)

To access Internet RFCs and drafts, go to the IETF Web site at http://www.ietf.org.

The JUNOS software supports a proprietary Management Information Base (MIB) for MPLS objects; see the JUNOS Network Management Configuration Guide for more information.

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