MPLS Features

The following major features are currently supported by MPLS:

• BFD fast failure detection for RSVP-TE adjacencies
• Differentiated services
• Interface support
  • ATM AAL5 (RSVP-TE only)
  • ATM1483 (point-to-point AAL5SNAP only)
  • Ethernet/VLAN
  • GRE
  • Multilink PPP
  • POS (PPP over HDLC)
  • PPP
  • SLEP (Cisco HDLC)
• Label stacking
  • Virtual Private Networks (VR-based and BGP-based)
  • Layer 2 Services over MPLS
• LER functionality
• LSR functionality
• Spoof checking
• LDP graceful restart
• ECMP
• Topology-driven LSPs (LDP) including support of LDP over RSVP tunnels
• Traffic engineering (RSVP-TE)
  • Constraint-based explicit routing
  • Statically configured explicit routing
  • Hop-by-hop routing
  • Admission control and bandwidth enforcement
  • Tunnels used by IGP as next hops in SPF calculation
  • Tunnel ingress controlled failure recovery
  • Facility back-up-style fast-route
• Traffic support
  • Layer 2 frames: ATM, Ethernet, Frame Relay, HDLC, PPP, VLAN
  • Layer 3 datagrams: IPv4, IPv6
• Point-to-multipoint LSP support
  • Data replication at branch nodes
  • E-series routers as egress LSRs