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