This article is an experimental effort of the Korean XO community. If you want to see the mesh network plan of OLPC, see Mesh_network.

Introduction

Because the IT infra of South Korea is quite well established compared to developing nations, it's rather easy for any OLPC (or its derivatives) to connect to the Internet regardless of their locations. However, we expect those 20,000,000+ OLPC and its derivative machines can establish a national-wide mesh network themselves. Therefore, there are two routes for each OLPC (or its derivative machine) to connect another, one via the current information highway of South Korea and the other via Korean Mesh Network, composed of more than 20,000,000 machines.

Transmission Network
Relay/switch Network
Internet
MPLS

The hierarchical structure of OLPC network is;

one class server per about 20 students - layer 5: the lowest server layer 각 학급이 관리하는 학급 서버
one school server per 20~100 class server of each school - layer 4: 각 학교가 관리하는 학교 서버
one local server per 10~50 school server - layer 3: 시군구 교육청이 관할하는 시군구 서버
one wide area server per 10~50 local server - layer 2: 지역 교육청이 관할하는 16개 광역자치단체 서버
one national server for 16 wide area server: 교육인적자원부가 관리하는 국가 서버

Networking

Every olpc laptop can communicate with other olpc latop or servers via wifi IEEE 802.11s, and servers communicate each other via WiMax IEEE 802.16.

Because of the mesh network capability, all laptops and servers shall maintain network connectivity 24 hrs/365 days.

School server & its derivatives

Because schools (even kindergartens also) in South Korea are all connected to the Internet now and provided of stable electricity 24hrs/365days, composing a network (stand-alone or not) is quite easy.

However, because we hope school servers to connect to (an)other school servers directly with or without using current cable networks, and because we hope OLPC and its derivatives be supplied to not only schools but other organizations also, we also make some derivatives of school servers suggested by the OLPC foundation.

There will be various types of servers in South Korea, ranging from a server for only one person to that for 1,000 persons.