meaning of hierarchical routing
1. hierarchical routing The complex problem of routing on large networks can be simplified by breaking a network into a hierarchy of smaller networks, where each level is responsible for its own routing. The Internet has, basically, three levels: the backbones, the mid-levels, and the stub networks. The backbones know how to route between the mid-levels, the mid-levels know how to route between the sites, and each site being an autonomous system knows how to route internally. See also Exterior Gateway Protocol, Interior Gateway Protocol, transit network. hierarchy An organisation with few things, or one thing, at the top and with several things below each other thing. An inverted tree structure. Examples in computing include a directory hierarchy where each directory may contain files or other directories; a hierarchical network see hierarchical routing, a class hierarchy in object-oriented programming.
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