The router supports 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 Epipe, Fpipe, and Ipipe VLL services as well as BGP VPWS. To configure insertion of the entropy label on a spoke-SDP of a specific service, use the entropy-label command in the spoke-sdp or pw-template context. Note that the entropy label is only inserted if the far end of the MPLS tunnel is also entropy-label-capable.
The hash label is supported for Epipe, Fpipe, and Ipipe VLL services. Configure it using the hash-label command in the spoke-sdp context.
Either the hash label or the entropy label can be configured on one object, but not both.