Using IS-IS To Advertise Power Group Membership

This document introduces Power Groups. A Power Group is a hierarchical abstraction of power consumed by hardware components. In IS-IS, interfaces can reference the Power Group to which they belong. Therefore, Power Groups provide a method of organizing interfaces into groups by power characteristics. The TE path placement algorithm can use Power Group membership information to implement TE policy. Power Group information is particularly useful when implementing TE policies that support power- savings and sustainability.