Cisco Systems Cisco Systems Cisco Systems Cisco Systems Juniper Networks Ennovate Networks Cisco Systems This document extends and clarifies the relevant portions of RFC 3031 and RFC 3036 by specifying in more detail the procedures which to be used when distributing labels to or from ATM-LSRs, when those labels represent Forwarding Equivalence Classes (FECs, see RFC 3031) for which the routes are determined on a hop-by-hop basis by network layer routing algorithms. [STANDARDS-TRACK]