HPE HPE HPE HPE [I-D.many-teas-power-steering] introduces a Power Conserving Path Placement Strategy (PCPPS). When possible, PCPPS concentrates traffic onto a small set of network resources. When traffic is concentrated onto a small set of network resources, other network resources become idle and can be powered down until they are needed again. This conserves energy and reduces environmental impact. PCPPS uses information that is distributed by an IGP. This document specifies the IS-IS encoding for that information.