This is an OPS-DIR review of Signaling Entropy Label Capability and Entropy Readable Label Depth Using IS-IS This ID proposes extensions to IS-IS to permit an egress LSR in a MPLS network to signal ingress LSRs in the network that it can process the Entropy Labels used in load balancing of traffic flows. The extensions are simple and are clearly explained in the ID. The ID itself is short and simple and, as such, makes me wonder (rhetorically) why it took 12 versions of the ID to get to this point. I see no operations-related issues with the proposal.