The router supports both the MPLS entropy label (RFC 6790) and the Flow Aware Transport label, known as the hash label (RFC 6391). LSR nodes in a network can load-balance labeled packets in a more granular way than by hashing on the standard label stack. See the 7450 ESS, 7750 SR, 7950 XRS, and VSR MPLS Guide for more information.
The entropy label is supported for VPRN services, as well as Epipe and Ipipe spoke-SDP termination on VPRN interfaces. To configure insertion of the entropy label, use the entropy-label command in the vprn context or spoke-sdp context of an interface.
The hash label is also supported for Epipe and Ipipe spoke-SDP termination on VPRN and VPRN services bound to any MPLS-type encapsulated SDP, as well as to a VPRN service using auto-bind-tunnel with the resolution-filter configured as any MPLS tunnel type. Configure it using the hash-label command in the vprn, vprn>spoke-sdp, and vprn>if>spoke-sdp contexts.
Either the hash label or the entropy label can be configured on one object, but not both.