Information for backbone providers/network engineers

"Backbone" networks, in general, are networks whose primary customers are other networks, be they tier 1 or lower; you sell transit to people who operate smaller networks, and peer with larger ones; you generally have a large amount of this type of traffic, even if you also provision circuits directly to end-users. In this section, we'll discuss how BCP38 applies to you as a backbone operator; if you also sell transit or have end-user customers, see also those sections.