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invitation for tender and instructions to tenderers - Indian Institute of ...

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TECHNICAL SCOPE OF WORK<br />

1. Introduction<br />

The <strong>Indian</strong> <strong>Institute</strong> <strong>of</strong> Science is a premier Research <strong>and</strong><br />

Education institute in the country. The campus has a fiber based<br />

gigabit Ethernet backbone spread across 1.5 square kms <strong>of</strong> the<br />

campus area <strong>to</strong> interconnect the various departments on campus.<br />

The network comprises <strong>of</strong> a core Ethernet switch that <strong>for</strong>ms the<br />

root <strong>of</strong> the tree <strong>to</strong>pology <strong>of</strong> the gigabit Ethernet backbone. The tree<br />

is organized in<strong>to</strong> level 1, level 2 <strong>and</strong> level 3 nodes (a <strong>to</strong>tal <strong>of</strong> about<br />

57) <strong>and</strong> there are about 3000 plus end systems in the campus that<br />

are interconnected.<br />

The campus hosts comprise <strong>of</strong> both clients <strong>and</strong> servers. Clients<br />

access the computing facilities at the SERC as well as the Internet.<br />

Servers on campus host in<strong>for</strong>mation that is accessible from the<br />

Internet.<br />

The campus has three access links <strong>to</strong> the Internet subscribed<br />

through three different Internet service providers.<br />

1.1 Internet Resources Availability<br />

The campus has a <strong>to</strong>tal address range <strong>of</strong> two /19s <strong>of</strong> the address<br />

144.16.0.0/16, allocated by ERNET <strong>for</strong> use on the campus.<br />

However, the campus consists <strong>of</strong> privately addressed hosts<br />

(10.0.0.0/8) accessing the Internet <strong>and</strong> publicly addressed servers<br />

(from the range mentioned above) providing in<strong>for</strong>mation via the<br />

Internet.<br />

1.2 Internet Services on campus<br />

The campus has direct access <strong>to</strong> resources on the Internet. All web<br />

access from campus <strong>to</strong> the Internet is through a www/ftp proxycache.<br />

All email coming in<strong>to</strong> <strong>and</strong> going out <strong>of</strong> the campus is<br />

through a single email server on campus. Within the campus,<br />

there are mail servers in each department providing mailbox<br />

access services <strong>to</strong> the local users.<br />

5

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