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e-Book PDF - Universidad de La Punta (ULP)

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El backbone principal está compuesto <strong>de</strong> treinta y<br />

seis nodos ubicados, estratégicamente, con el objeto<br />

<strong>de</strong> conectar <strong>de</strong>s<strong>de</strong> allí todos los nodos secundarios<br />

y <strong>de</strong> estos últimos los enlaces <strong>de</strong> última milla, los <strong>de</strong><br />

acceso al usuario.<br />

2.2.2 Los Shelter´s <strong>de</strong> la AUI<br />

En cada nodo principal se encuentran los equipos <strong>de</strong><br />

comunicaciones necesarios para que la red funcione.<br />

Los mismos están dispuestos en un shelter.<br />

Un shelter es un cerramiento tipo contenedor que<br />

permite alojar equipos electrónicos o <strong>de</strong> telecomunicaciones,<br />

altamente sensibles, en un ambiente controlado<br />

y apto para el correcto funcionamiento (ver<br />

figura 6).<br />

<strong>La</strong>s principales características <strong>de</strong> los shelters instalados<br />

son:<br />

• Están diseñados para servicio en intemperie.<br />

Figura 6: shelter <strong>de</strong> la AUI./ Figure 6: AUI shelter.<br />

• Permiten alojar y proteger el equipamiento <strong>de</strong><br />

telecomunicaciones contra diversos agentes <strong>de</strong>l<br />

medio ambiente tales como: polvo, salpicaduras<br />

<strong>de</strong> agua, con<strong>de</strong>nsaciones externas, vientos, aire<br />

húmedo, lluvia, etc., según las <strong>de</strong>finiciones <strong>de</strong> la<br />

IEC529 en el cuerpo electrónico IP55 y en el cuerpo<br />

<strong>de</strong> energía IP54 (ver figura 7).<br />

| 27<br />

2.2.1 Backbone IP: The Vertebral Spine<br />

The backbone of the IP net, this is to say the vertebral spine of the IP<br />

net, is constituted by a set of no<strong>de</strong>s and links that cover the most important<br />

cities of San Luis. (fig. 5).<br />

The main backbone is composed by thirty-six no<strong>de</strong>s, strategically<br />

located in or<strong>de</strong>r to connect from there all the secondary no<strong>de</strong>s, and<br />

from here the last mile links, those which the user accesses.<br />

2.2.2 The AUI Shelters<br />

The necessary communication equipment to ensure the operation of<br />

the net are located at each main no<strong>de</strong>. This equipment is set up in a<br />

shelter.<br />

A shelter is an enclosed space similar to a container, which allows the<br />

storage of very sensitive electronic or telecommunication equipment,<br />

in a controlled environment for proper operation.<br />

The main features of the shelters that have been set up are:<br />

• They are <strong>de</strong>signed for operation un<strong>de</strong>r harsh weather conditions.<br />

• They can store and protect telecommunications equipment<br />

against several environmental agents such a dust, water, external<br />

con<strong>de</strong>nsation, wind, moist air, rain, etc., according to the <strong>de</strong>finitions<br />

of the IEC529 in sections IP55 and IP54 (figure 7).

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