The South African NREN comprises a core national backbone, backbone extensions (regional links), back-hauling from the submarine cable landing stations at Yzerfontein and Mtunzini to Cape Town and eThekewini respectively, several metropolitan rings, and link extensions. The geographical and logical views of the SA NREN network are depicted in the figures below.

South African NREN Backbone Map: Geographical

South African NREN Backbone Map: Logical