The router supports the MPLS entropy label (RFC 6790) and the Flow Aware Transport label (known as the hash label) (RFC 6391). These labels allow LSR nodes in a network to load-balance labeled packets in a much more granular fashion than allowed by simply 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 LDP VPLS and BGP-AD VPLS, as well as Epipe and Ipipe spoke-SDP termination on VPLS services. To configure insertion of the entropy label on a spoke-SDP or mesh-SDP of a specific service, use the entropy-label command in the spoke-sdp, mesh-sdp, or pw-template contexts. 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 LDP VPLS and BGP-AD VPLS, as well as Epipe and Ipipe spoke-SDP termination on VPLS services. Configure it using the hash-label command in the spoke-sdp, mesh-sdp, or pw-template contexts.
Either the hash label or the entropy label can be configured on one object, but not both.